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1310.6240
Daniel Pitonyak
D. Pitonyak, M. Schlegel, A. Metz
Polarized hadron pair production from electron-positron annihilation
29 pages, 5 figures, Version to appear in Phys. Rev. D
null
10.1103/PhysRevD.89.054032
RBRC-1046
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the production of two almost back-to-back hadrons from the annihilation of an electron and a positron, allowing for the polarization of all particles involved. In particular, we conduct a general (model-independent) structure function decomposition of the cross section for the case $e^+e^- \to \gamma^* \to h...
[ { "created": "Wed, 23 Oct 2013 14:34:18 GMT", "version": "v1" }, { "created": "Mon, 17 Mar 2014 15:28:12 GMT", "version": "v2" } ]
2015-06-17
[ [ "Pitonyak", "D.", "" ], [ "Schlegel", "M.", "" ], [ "Metz", "A.", "" ] ]
We study the production of two almost back-to-back hadrons from the annihilation of an electron and a positron, allowing for the polarization of all particles involved. In particular, we conduct a general (model-independent) structure function decomposition of the cross section for the case $e^+e^- \to \gamma^* \to h_a...
0901.2560
Michael Lublinsky
Tolga Altinoluk, Alex Kovner, Michael Lublinsky
Inclusive Gluon Production in the QCD Reggeon Field Theory: Pomeron Loops Included
26 pages
JHEP 0903:110,2009
10.1088/1126-6708/2009/03/110
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We continue the study of hadronic scattering amplitudes at high energy by systematically including nonlinear effects of finite partonic density in hadronic wave function as well as the effects of multiple rescatterings in the scattering process. In this paper we derive expressions for a single inclusive gluon product...
[ { "created": "Fri, 16 Jan 2009 20:23:09 GMT", "version": "v1" } ]
2009-04-02
[ [ "Altinoluk", "Tolga", "" ], [ "Kovner", "Alex", "" ], [ "Lublinsky", "Michael", "" ] ]
We continue the study of hadronic scattering amplitudes at high energy by systematically including nonlinear effects of finite partonic density in hadronic wave function as well as the effects of multiple rescatterings in the scattering process. In this paper we derive expressions for a single inclusive gluon productio...
2204.05024
Hyun Min Lee
Hyun Min Lee, Kimiko Yamashita
A Model of Vector-like Leptons for the Muon $g-2$ and the $W$ Boson Mass
18 pages, 4 figures, v2: references and discussion on dilepton bounds added, v3: version to be published in Eur. Phys. J. C
null
10.1140/epjc/s10052-022-10635-z
null
hep-ph
http://creativecommons.org/licenses/by-nc-nd/4.0/
We consider a simple extension of the Standard Model (SM) with a vector-like lepton and a local $U(1)'$ symmetry, motivated by the recent experimental anomalies in the muon $g-2$ and the $W$ boson mass. The $U(1)'$ symmetry is spontaneously broken by the VEVs of the dark Higgs scalar and the second Higgs doublet, giv...
[ { "created": "Mon, 11 Apr 2022 11:43:03 GMT", "version": "v1" }, { "created": "Sun, 17 Apr 2022 14:36:56 GMT", "version": "v2" }, { "created": "Sat, 23 Jul 2022 22:17:17 GMT", "version": "v3" } ]
2022-08-24
[ [ "Lee", "Hyun Min", "" ], [ "Yamashita", "Kimiko", "" ] ]
We consider a simple extension of the Standard Model (SM) with a vector-like lepton and a local $U(1)'$ symmetry, motivated by the recent experimental anomalies in the muon $g-2$ and the $W$ boson mass. The $U(1)'$ symmetry is spontaneously broken by the VEVs of the dark Higgs scalar and the second Higgs doublet, givin...
hep-ph/0012291
Antti Sorri
Kari Enqvist, Kimmo Kainulainen and Antti Sorri
Creation of large spatial fluctuations in neutrino asymmetry by neutrino oscillations
1+21 pages, 3 figures
JHEP 0104 (2001) 012
10.1088/1126-6708/2001/04/012
HIP-2000-54/TH, NORDITA 2000/92 HE
hep-ph astro-ph
null
We consider active-sterile neutrino oscillations in the early universe in an inhomogeneous isocurvature background. We show that very small initial baryonic seed-inhomogeneities can trigger a growth of very large amplitude spatial fluctuations in lepton asymmetry. Domains of varying asymmetry are observed to persist ...
[ { "created": "Thu, 21 Dec 2000 15:41:04 GMT", "version": "v1" } ]
2009-10-31
[ [ "Enqvist", "Kari", "" ], [ "Kainulainen", "Kimmo", "" ], [ "Sorri", "Antti", "" ] ]
We consider active-sterile neutrino oscillations in the early universe in an inhomogeneous isocurvature background. We show that very small initial baryonic seed-inhomogeneities can trigger a growth of very large amplitude spatial fluctuations in lepton asymmetry. Domains of varying asymmetry are observed to persist fo...
1607.01933
Antonio Costantini
Priyotosh Bandyopadhyay, Claudio Coriano, Antonio Costantini, Luigi Delle Rose
Bounds on the Conformal Scale of a Minimally Coupled Dilaton and Multi-Leptonic Signatures at the LHC
26 pages, 37 figures and 7 tables, corrected final version to appear on JHEP
null
10.1007/JHEP09(2016)084
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We explore the potential for the discovery of a dilaton $\mathcal{O}(200-500)$ GeV in a classical scale/conformal invariant extension of the Standard Model by investigating the size of the corresponding breaking scale $\Lambda$ at the LHC, extending a previous analysis. In particular, we address the recent bounds on ...
[ { "created": "Thu, 7 Jul 2016 09:30:34 GMT", "version": "v1" }, { "created": "Tue, 12 Jul 2016 17:47:47 GMT", "version": "v2" }, { "created": "Sun, 17 Jul 2016 07:20:26 GMT", "version": "v3" }, { "created": "Tue, 13 Sep 2016 08:25:31 GMT", "version": "v4" } ]
2016-10-12
[ [ "Bandyopadhyay", "Priyotosh", "" ], [ "Coriano", "Claudio", "" ], [ "Costantini", "Antonio", "" ], [ "Rose", "Luigi Delle", "" ] ]
We explore the potential for the discovery of a dilaton $\mathcal{O}(200-500)$ GeV in a classical scale/conformal invariant extension of the Standard Model by investigating the size of the corresponding breaking scale $\Lambda$ at the LHC, extending a previous analysis. In particular, we address the recent bounds on $\...
1905.11179
Antonio Dobado
Adri\'an Casado-Turri\'on and Antonio Dobado
Triggering the QCD phase transition through the Unruh effect: chiral symmetry restoration for uniformly accelerated observers
null
Phys. Rev. D 99, 125018 (2019)
10.1103/PhysRevD.99.125018
null
hep-ph gr-qc
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this work we study the chiral phase transition as observed by an accelerating observer taking into account the Unruh effect. We use Chiral Perturbation Theory at leading order and the large $N$ limit ($N$ being the number of pions) as an effective description of low-energy QCD, and the Thermalization Theorem to co...
[ { "created": "Mon, 27 May 2019 12:56:41 GMT", "version": "v1" } ]
2019-07-03
[ [ "Casado-Turrión", "Adrián", "" ], [ "Dobado", "Antonio", "" ] ]
In this work we study the chiral phase transition as observed by an accelerating observer taking into account the Unruh effect. We use Chiral Perturbation Theory at leading order and the large $N$ limit ($N$ being the number of pions) as an effective description of low-energy QCD, and the Thermalization Theorem to comp...
hep-ph/9808284
null
R. N. Mohapatra
Particle Physics Implications of Neutrinoless Double Beta Decay
10 pages; four figures: Invited talk presented at the NEUTRINO 98 conference held in Takayama, Japan, June, 1998; to appear in the proceedings; references added
Nucl.Phys.Proc.Suppl. 77 (1999) 376-385
10.1016/S0920-5632(99)00447-8
null
hep-ph
null
Neutrinoless double beta decay is a sensitive probe of the patterns of neutrino masses and mixings if the neutrinos are Majorana particles as well as other new physics scenarios beyond the standard model. In this talk, the present experimental lower bound on the lifetime for $\beta\beta_{0\nu}$ is used to constrain t...
[ { "created": "Mon, 10 Aug 1998 18:06:24 GMT", "version": "v1" }, { "created": "Fri, 14 Aug 1998 17:19:00 GMT", "version": "v2" } ]
2009-10-31
[ [ "Mohapatra", "R. N.", "" ] ]
Neutrinoless double beta decay is a sensitive probe of the patterns of neutrino masses and mixings if the neutrinos are Majorana particles as well as other new physics scenarios beyond the standard model. In this talk, the present experimental lower bound on the lifetime for $\beta\beta_{0\nu}$ is used to constrain the...
1005.5382
Juan Antonio Aguilar-Saavedra
J. A. Aguilar-Saavedra, J. Bernabeu
W polarisation beyond helicity fractions in top quark decays
LaTeX 36 pages, 51 EPS figures. Typos corrected. To appear in NPB
Nucl.Phys.B840:349-378,2010
10.1016/j.nuclphysb.2010.07.012
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We calculate the density matrix for the decay of a polarised top quark into a polarised W boson and a massive b quark, for the most general Wtb vertex arising from dimension-six gauge-invariant effective operators. We show that, in addition to the well-known W helicity fractions, for polarised top decays it is worth ...
[ { "created": "Fri, 28 May 2010 20:00:02 GMT", "version": "v1" }, { "created": "Mon, 2 Aug 2010 13:22:51 GMT", "version": "v2" } ]
2014-11-21
[ [ "Aguilar-Saavedra", "J. A.", "" ], [ "Bernabeu", "J.", "" ] ]
We calculate the density matrix for the decay of a polarised top quark into a polarised W boson and a massive b quark, for the most general Wtb vertex arising from dimension-six gauge-invariant effective operators. We show that, in addition to the well-known W helicity fractions, for polarised top decays it is worth to...
1202.2382
Juan Antonio Aguilar-Saavedra
J. A. Aguilar-Saavedra
Overview of models for the t tbar asymmetry
LaTeX 6 pages. Proceedings of TOP2011, 4th International Workshop on Top Quark Physics, 25-30th September 2011, Sant Feliu de Guixols, Spain
null
10.1393/ncc/i2012-11240-7
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We review the most popular models proposed to explain the anomalous forward-backward asymmetry in t tbar production at the Tevatron. We discuss their viability in view of recent LHC data. We summarise their predictions for charge asymmetries at the LHC.
[ { "created": "Fri, 10 Feb 2012 23:03:07 GMT", "version": "v1" } ]
2022-03-02
[ [ "Aguilar-Saavedra", "J. A.", "" ] ]
We review the most popular models proposed to explain the anomalous forward-backward asymmetry in t tbar production at the Tevatron. We discuss their viability in view of recent LHC data. We summarise their predictions for charge asymmetries at the LHC.
hep-ph/0212248
Roland Kirschner
R. Kirschner
Parton interactions in the Bjorken aymptotics
19 pages LaTex, 3 eps-figures, reference added
null
null
NTZ 09/2002
hep-ph
null
We demonstrate the effective action scheme for the leading parton interactions and discuss the symmetry properties. The interaction kernels are particular cases of conformal symmetric two-particle kernels. There is a direct relation to the conformal symmetric rational solution of the Yang-Baxter equation.
[ { "created": "Tue, 17 Dec 2002 12:14:35 GMT", "version": "v1" }, { "created": "Thu, 23 Jan 2003 08:47:31 GMT", "version": "v2" } ]
2007-05-23
[ [ "Kirschner", "R.", "" ] ]
We demonstrate the effective action scheme for the leading parton interactions and discuss the symmetry properties. The interaction kernels are particular cases of conformal symmetric two-particle kernels. There is a direct relation to the conformal symmetric rational solution of the Yang-Baxter equation.
1209.1051
Paul Hohler
Paul M. Hohler and Ralf Rapp
Evaluating chiral symmetry restoration through the use of sum rules
9 pages, conference proceedings from Resonance Workshop at UT Austin, March 5-7 2012
null
10.1051/epjconf/20123600012
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We pursue the idea of assessing chiral restoration via in-medium modifications of hadronic spectral functions of chiral partners. The usefulness of sum rules in this endeavor is illustrated, focusing on the vector and axial-vector channels. We first present an update on constructing quantitative results for pertinent...
[ { "created": "Wed, 5 Sep 2012 17:31:50 GMT", "version": "v1" } ]
2015-06-11
[ [ "Hohler", "Paul M.", "" ], [ "Rapp", "Ralf", "" ] ]
We pursue the idea of assessing chiral restoration via in-medium modifications of hadronic spectral functions of chiral partners. The usefulness of sum rules in this endeavor is illustrated, focusing on the vector and axial-vector channels. We first present an update on constructing quantitative results for pertinent v...
hep-ph/0611207
Jonathan Rosner
Jonathan L. Rosner
Mass splittings in $\Sigma_b$ and $\Sigma_b^*$
6 pages, 1 figure, to be published in Phys. Rev. D (Brief Reports). Numerical corrections; some text added
Phys.Rev.D75:013009,2007
10.1103/PhysRevD.75.013009
EFI 06-23
hep-ph hep-ex
null
The charged $\Sigma_b$ and $\Sigma^*_b$ states have recently been reported by the CDF Collaboration. The relation of their reported charge-averaged masses to expectations based on the quark model is reviewed briefly. A relation is proved among the $\Delta I = 1$ electromagnetic mass differences $\Sigma_1 \equiv M(\Si...
[ { "created": "Wed, 15 Nov 2006 16:58:53 GMT", "version": "v1" }, { "created": "Mon, 20 Nov 2006 20:56:54 GMT", "version": "v2" }, { "created": "Mon, 20 Nov 2006 21:26:50 GMT", "version": "v3" }, { "created": "Sat, 6 Jan 2007 21:10:27 GMT", "version": "v4" } ]
2008-11-26
[ [ "Rosner", "Jonathan L.", "" ] ]
The charged $\Sigma_b$ and $\Sigma^*_b$ states have recently been reported by the CDF Collaboration. The relation of their reported charge-averaged masses to expectations based on the quark model is reviewed briefly. A relation is proved among the $\Delta I = 1$ electromagnetic mass differences $\Sigma_1 \equiv M(\Sigm...
2106.10299
Keping Xie
Keping Xie, T. J. Hobbs, Tie-Jiun Hou, Carl Schmidt, Mengshi Yan, and C.-P. Yuan
The photon PDF within the CT18 global analysis
45 pages, 27 figures, and 5 tables
null
10.1103/PhysRevD.105.054006
MSUHEP-21-013, PITT-PACC-2112, SMU-HEP-21-06, FERMILAB-PUB-21-370-QIS-SCD-T
hep-ph hep-ex nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Building upon the most recent CT18 global fit, we present a new calculation of the photon content of the proton based on an application of the LUX formalism. In this work, we explore two principal variations of the LUX ansatz. In one approach, which we designate "CT18lux," the photon PDF is calculated directly using ...
[ { "created": "Fri, 18 Jun 2021 18:03:34 GMT", "version": "v1" }, { "created": "Thu, 8 Jul 2021 06:34:30 GMT", "version": "v2" }, { "created": "Fri, 3 Sep 2021 02:13:50 GMT", "version": "v3" }, { "created": "Sun, 12 Feb 2023 18:37:31 GMT", "version": "v4" } ]
2023-02-14
[ [ "Xie", "Keping", "" ], [ "Hobbs", "T. J.", "" ], [ "Hou", "Tie-Jiun", "" ], [ "Schmidt", "Carl", "" ], [ "Yan", "Mengshi", "" ], [ "Yuan", "C. -P.", "" ] ]
Building upon the most recent CT18 global fit, we present a new calculation of the photon content of the proton based on an application of the LUX formalism. In this work, we explore two principal variations of the LUX ansatz. In one approach, which we designate "CT18lux," the photon PDF is calculated directly using th...
hep-ph/0112073
Ismd31
Swagato Banerjee
Study of Rapidity Gap Events in Hadronic Z Decays with L3 detector
4 pages, 7 figures (in eps) talk given at XXXI International Symposium on Multiparticle Dynamics, Sep. 1-7, 2001, Datong China. see http://ismd31.ccnu.edu.cn/
null
10.1142/9789812778048_0007
null
hep-ph
null
Rapidity gaps have been studied in well separated completely symmetric 3 jet events from hadronic Z decays to search for colour singlet exchange. Asymmetries in particle flow and angular separation, defined with respect to the inter-jet regions, are found to be sensitive to the exchange of a colour singlet object ins...
[ { "created": "Wed, 5 Dec 2001 08:57:19 GMT", "version": "v1" } ]
2017-08-23
[ [ "Banerjee", "Swagato", "" ] ]
Rapidity gaps have been studied in well separated completely symmetric 3 jet events from hadronic Z decays to search for colour singlet exchange. Asymmetries in particle flow and angular separation, defined with respect to the inter-jet regions, are found to be sensitive to the exchange of a colour singlet object inste...
2108.08897
Fabrizio Caola
Fabrizio Caola, Silvia Ferrario Ravasio, Giovanni Limatola, Kirill Melnikov and Paolo Nason
On linear power corrections in certain collider observables
v2: references added, minor typos corrected. Version published in JHEP
null
10.1007/JHEP01(2022)093
OUTP-21-21P, TTP21-026, P3H-21-056
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study linear power corrections ${\cal O}(\Lambda_{\rm QCD}/Q)$ to certain collider observables. We present arguments that prove that such corrections cannot appear in observables that are inclusive with respect to QCD radiation, such as total cross sections as well as rapidity and transverse momentum distributions...
[ { "created": "Thu, 19 Aug 2021 20:23:08 GMT", "version": "v1" }, { "created": "Sun, 12 Jun 2022 12:53:29 GMT", "version": "v2" } ]
2022-06-14
[ [ "Caola", "Fabrizio", "" ], [ "Ravasio", "Silvia Ferrario", "" ], [ "Limatola", "Giovanni", "" ], [ "Melnikov", "Kirill", "" ], [ "Nason", "Paolo", "" ] ]
We study linear power corrections ${\cal O}(\Lambda_{\rm QCD}/Q)$ to certain collider observables. We present arguments that prove that such corrections cannot appear in observables that are inclusive with respect to QCD radiation, such as total cross sections as well as rapidity and transverse momentum distributions o...
hep-ph/9401288
Qiping Xu
Patrick J. O'Donnell and Q. P. Xu
Semileptonic and Exclusive Rare B Decays
13 pages, Latex, no figure, UTPT--94--02
Phys.Lett. B325 (1994) 219-226
10.1016/0370-2693(94)90095-7
null
hep-ph
null
The exclusive rare decay $B \ra K^\ast \gamma$ takes place in a region of maximum recoil, $q^{2}=0$, posing a problem for nonrelativistic quark models which are usually thought to be most reliable at zero recoil. The Bauer--Stech--Wirbel (BSW) model, formulated in the infinite--momentum--frame (IMF) formalism, is des...
[ { "created": "Wed, 19 Jan 1994 23:02:34 GMT", "version": "v1" } ]
2009-10-28
[ [ "O'Donnell", "Patrick J.", "" ], [ "Xu", "Q. P.", "" ] ]
The exclusive rare decay $B \ra K^\ast \gamma$ takes place in a region of maximum recoil, $q^{2}=0$, posing a problem for nonrelativistic quark models which are usually thought to be most reliable at zero recoil. The Bauer--Stech--Wirbel (BSW) model, formulated in the infinite--momentum--frame (IMF) formalism, is desig...
hep-ph/0412091
Shinji Maedan
Shinji Maedan
Space-time evolution of a condensate in the interaction representation
18 pages,8 figures
null
null
TNCT-0401
hep-ph
null
The space-time evolution of an inhomogeneous as well as homogeneous condensate is studied. We use the $ \lambda \phi^4 $ model and adopt the interaction representation in which the particle picture of the field $\phi$ with mass $m$ is definitely obtained. As the initial condition, a coherent state is assumed. In the ...
[ { "created": "Tue, 7 Dec 2004 05:48:13 GMT", "version": "v1" } ]
2007-05-23
[ [ "Maedan", "Shinji", "" ] ]
The space-time evolution of an inhomogeneous as well as homogeneous condensate is studied. We use the $ \lambda \phi^4 $ model and adopt the interaction representation in which the particle picture of the field $\phi$ with mass $m$ is definitely obtained. As the initial condition, a coherent state is assumed. In the ca...
0809.1749
Yuri Dokshitzer
Yu.L. Dokshitzer and G. Marchesini
Monte Carlo and large angle gluon radiation
accepted for publication by JHEP on 21.02.2009; to appear in March 2009
JHEP 0903:117,2009
10.1088/1126-6708/2009/03/117
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We discuss the problem of incorporating recoil effects into the probabilistic QCD evolution scheme based on the picture of colour dipoles as done in recent Monte Carlo programs. Such a scheme correctly describes subleading soft contributions to multiplicity distributions. However we find that a simple receipt for inc...
[ { "created": "Wed, 10 Sep 2008 09:58:13 GMT", "version": "v1" }, { "created": "Tue, 17 Mar 2009 15:14:20 GMT", "version": "v2" } ]
2009-03-27
[ [ "Dokshitzer", "Yu. L.", "" ], [ "Marchesini", "G.", "" ] ]
We discuss the problem of incorporating recoil effects into the probabilistic QCD evolution scheme based on the picture of colour dipoles as done in recent Monte Carlo programs. Such a scheme correctly describes subleading soft contributions to multiplicity distributions. However we find that a simple receipt for incor...
1207.1849
Krishna Kingkar Pathak
Krishna Kingkar Pathak, D. K. Choudhury and N. S. Bordoloi
Leptonic decay of Heavy-light Mesons in a QCD Potential Model
9 pages,3 tables
Int. J. Mod. Phys.A Vol. 28 (2013) 1350010
10.1142/S0217751X13500103
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the masses and decay constants of heavy-light flavour mesons D, Ds, B and Bs in a QCD Potential model. The mesonic wavefunction is used to compute the masses of D and B mesons in the ground state and the wavefunction is transformed to momentum space to estimate the pseudoscalar decay constants of these meson...
[ { "created": "Sun, 8 Jul 2012 07:25:26 GMT", "version": "v1" }, { "created": "Wed, 14 Nov 2012 11:33:01 GMT", "version": "v2" }, { "created": "Tue, 22 Jan 2013 07:29:07 GMT", "version": "v3" } ]
2013-01-23
[ [ "Pathak", "Krishna Kingkar", "" ], [ "Choudhury", "D. K.", "" ], [ "Bordoloi", "N. S.", "" ] ]
We study the masses and decay constants of heavy-light flavour mesons D, Ds, B and Bs in a QCD Potential model. The mesonic wavefunction is used to compute the masses of D and B mesons in the ground state and the wavefunction is transformed to momentum space to estimate the pseudoscalar decay constants of these mesons....
2009.01828
Ricardo Aguirre
R. M. Aguirre
Regularization of the Nambu-Jona Lasinio model under a uniform magnetic field and the role of the anomalous magnetic moments
Major revision
null
10.1103/PhysRevD.102.096025
null
hep-ph astro-ph.HE nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The vacuum contribution to quark matter under a uniform magnetic field within the SU(3) version of the Nambu and Jona-Lasinio model is studied. The standard regularization procedure is examined and a new prescription is proposed. For this purpose analytic regularization and a subtraction scheme are used to deal with ...
[ { "created": "Thu, 3 Sep 2020 17:49:38 GMT", "version": "v1" }, { "created": "Mon, 9 Nov 2020 12:28:36 GMT", "version": "v2" } ]
2020-12-30
[ [ "Aguirre", "R. M.", "" ] ]
The vacuum contribution to quark matter under a uniform magnetic field within the SU(3) version of the Nambu and Jona-Lasinio model is studied. The standard regularization procedure is examined and a new prescription is proposed. For this purpose analytic regularization and a subtraction scheme are used to deal with di...
hep-ph/9807388
Stephen Wong
S.M.H. Wong
Open Charm, Photon and Dilepton Production in an Increasingly Strongly Interacting Parton Plasma
10 pages, revtex style with 8 embedded PS figures, to appear in Phys. Rev. C
Phys.Rev.C58:2358,1998
10.1103/PhysRevC.58.2358
WU-B 97/32
hep-ph nucl-th
null
We examine the effects of the new equilibration scenario of the increasingly strongly interacting parton plasma and of the non-equilibrium environment have on the production of open charm, photon and dilepton at LHC and at RHIC energies. We show that an out-of-equilibrium effect, not shown before, changes significant...
[ { "created": "Wed, 15 Jul 1998 18:41:03 GMT", "version": "v1" } ]
2008-11-26
[ [ "Wong", "S. M. H.", "" ] ]
We examine the effects of the new equilibration scenario of the increasingly strongly interacting parton plasma and of the non-equilibrium environment have on the production of open charm, photon and dilepton at LHC and at RHIC energies. We show that an out-of-equilibrium effect, not shown before, changes significantly...
0902.0972
Arunansu Sil
Philippe Brax, Carlos A. Savoy and Arunansu Sil
SQCD Inflation & SUSY Breaking
15 pages, typos corrected, references added
JHEP 0904:092,2009
10.1088/1126-6708/2009/04/092
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A model of generalised hybrid inflation in a supersymmetric QCD theory is proposed whose parameters are the gauge coupling and quark masses. Its gravitational coupling to another SQCD sector induces a metastable supersymmetry breaking vacuum of the ISS type as ISS quarks become massive at the end of inflation. Using ...
[ { "created": "Thu, 5 Feb 2009 20:39:55 GMT", "version": "v1" }, { "created": "Thu, 12 Mar 2009 19:25:44 GMT", "version": "v2" } ]
2010-04-23
[ [ "Brax", "Philippe", "" ], [ "Savoy", "Carlos A.", "" ], [ "Sil", "Arunansu", "" ] ]
A model of generalised hybrid inflation in a supersymmetric QCD theory is proposed whose parameters are the gauge coupling and quark masses. Its gravitational coupling to another SQCD sector induces a metastable supersymmetry breaking vacuum of the ISS type as ISS quarks become massive at the end of inflation. Using a ...
hep-ph/0111094
Kwei-Chou Yang
Hai-Yang Cheng (AS), Yong-Yeon Keum (AS), Kwei-Chou Yang (CYCU)
B -> J/psi K^* Decays in QCD Factorization
21 pages, 1 figure, a table and a reference added, some typos corrected
Phys.Rev.D65:094023,2002
10.1103/PhysRevD.65.094023
IPAS-HEP-01-007, KIAS-P01050
hep-ph
null
The hadronic decay B -> J K^* is analyzed within the framework of QCD factorization. The spin amplitudes A_0, A_\parallel and A_\perp in the transversity basis and their relative phases are studied using various different form-factor models for B-K^* transition. The effective parameters a_2^h for helicity h=0,+,- sta...
[ { "created": "Thu, 8 Nov 2001 17:23:59 GMT", "version": "v1" }, { "created": "Wed, 6 Feb 2002 00:44:52 GMT", "version": "v2" } ]
2011-03-23
[ [ "Cheng", "Hai-Yang", "", "AS" ], [ "Keum", "Yong-Yeon", "", "AS" ], [ "Yang", "Kwei-Chou", "", "CYCU" ] ]
The hadronic decay B -> J K^* is analyzed within the framework of QCD factorization. The spin amplitudes A_0, A_\parallel and A_\perp in the transversity basis and their relative phases are studied using various different form-factor models for B-K^* transition. The effective parameters a_2^h for helicity h=0,+,- state...
1001.1940
Jae Yong Lee
Jae Yong Lee
Renormalization in General Gauge Mediation
25 pages, 12 figures
JHEP 1010:041,2010
10.1007/JHEP10(2010)041
KIAS-P09067
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We revisit General Gauge Mediation (GGM) in light of the supersymmetric (linear) sigma model by utilizing the current superfield. The current superfield in the GGM is identified with supersymmetric extension of the vector symmetry current of the sigma model while spontaneous breakdown of supersymmetry in the GGM corr...
[ { "created": "Tue, 12 Jan 2010 16:20:42 GMT", "version": "v1" }, { "created": "Sat, 23 Jan 2010 10:03:41 GMT", "version": "v2" }, { "created": "Thu, 15 Jul 2010 09:31:31 GMT", "version": "v3" } ]
2014-11-20
[ [ "Lee", "Jae Yong", "" ] ]
We revisit General Gauge Mediation (GGM) in light of the supersymmetric (linear) sigma model by utilizing the current superfield. The current superfield in the GGM is identified with supersymmetric extension of the vector symmetry current of the sigma model while spontaneous breakdown of supersymmetry in the GGM corres...
hep-ph/0612192
Bingsong Zou
B.C.Liu and B.S.Zou
Reply to Comment on "Mass and K-Lambda Coupling of the N*(1535)"
accepted by Phys. Rev. Lett. for publication
Phys.Rev.Lett.98:039102,2007
10.1103/PhysRevLett.98.039102
null
hep-ph
null
Here we give our reply to the comment by Sibirtsev et al on our paper ``Mass and K-Lambda Coupling of the N*(1535)".
[ { "created": "Fri, 15 Dec 2006 13:28:24 GMT", "version": "v1" } ]
2008-11-26
[ [ "Liu", "B. C.", "" ], [ "Zou", "B. S.", "" ] ]
Here we give our reply to the comment by Sibirtsev et al on our paper ``Mass and K-Lambda Coupling of the N*(1535)".
hep-ph/0501173
Michael Lublinsky
Eugene Levin and Michael Lublinsky
Towards a symmetric approach to high energy evolution: generating functional with Pomeron loops
27 pages and 5 figures. Significantly revised version. To appear in Nuclear Physics A
Nucl.Phys. A763 (2005) 172-196
10.1016/j.nuclphysa.2005.08.021
TAUP 2795-05
hep-ph
null
We derive an evolution equation for the generating functional which accounts for processes for both gluon emission and recombination. In terms of color dipoles, the kernel of this equation describes evolution as a classical branching process with conserved probabilities. The introduction of dipole recombination allow...
[ { "created": "Tue, 18 Jan 2005 20:26:02 GMT", "version": "v1" }, { "created": "Thu, 20 Jan 2005 01:17:03 GMT", "version": "v2" }, { "created": "Wed, 9 Feb 2005 16:41:39 GMT", "version": "v3" }, { "created": "Tue, 23 Aug 2005 21:18:15 GMT", "version": "v4" } ]
2009-11-11
[ [ "Levin", "Eugene", "" ], [ "Lublinsky", "Michael", "" ] ]
We derive an evolution equation for the generating functional which accounts for processes for both gluon emission and recombination. In terms of color dipoles, the kernel of this equation describes evolution as a classical branching process with conserved probabilities. The introduction of dipole recombination allows ...
2204.06484
Mathew Thomas Mr.
Mathew Thomas Arun
Baryon number violation from confining New Physics
11 pages, 8 figures, accepted for publishing in Physical Review D
null
10.1088/1742-6596/2446/1/012052
null
hep-ph astro-ph.HE
http://creativecommons.org/licenses/by/4.0/
The detection of neutron-antineutron oscillation will be a discovery of fundamental importance in particle physics and cosmology. In models discussed widely in literature, the process is generated through heavy New Physics with weak, perturbative, coupling at the scale of the experiment. Acknowledging the fact that N...
[ { "created": "Wed, 13 Apr 2022 16:12:03 GMT", "version": "v1" }, { "created": "Wed, 20 Jul 2022 10:40:23 GMT", "version": "v2" }, { "created": "Tue, 28 Feb 2023 06:04:18 GMT", "version": "v3" } ]
2023-03-22
[ [ "Arun", "Mathew Thomas", "" ] ]
The detection of neutron-antineutron oscillation will be a discovery of fundamental importance in particle physics and cosmology. In models discussed widely in literature, the process is generated through heavy New Physics with weak, perturbative, coupling at the scale of the experiment. Acknowledging the fact that Nat...
2101.10274
Antonio Ortiz
Antonio Ortiz and Erik Zepeda
Extraction of the multiplicity dependence of Multiparton Interactions from LHC pp data using Machine Learning techniques
4 pages, 4 figures. To be published in Journ. of Phys. G: Nucl. and Part. Phys
J. Phys. G: Nucl. Part. Phys. 48 (2021) 085014
10.1088/1361-6471/abef1e
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Over the last years, Machine Learning (ML) methods have been successfully applied to a wealth of problems in high-energy physics. For instance, in a previous work we have reported that using ML techniques one can extract the Multiparton Interactions (MPI) activity from minimum-bias pp data. Using the available LHC da...
[ { "created": "Mon, 25 Jan 2021 17:56:12 GMT", "version": "v1" }, { "created": "Tue, 16 Mar 2021 22:54:23 GMT", "version": "v2" } ]
2021-07-15
[ [ "Ortiz", "Antonio", "" ], [ "Zepeda", "Erik", "" ] ]
Over the last years, Machine Learning (ML) methods have been successfully applied to a wealth of problems in high-energy physics. For instance, in a previous work we have reported that using ML techniques one can extract the Multiparton Interactions (MPI) activity from minimum-bias pp data. Using the available LHC data...
1611.08149
Stefan Groote Dr.
Sergey Koshkarev, Stefan Groote
Double quarkonium production at high Feynman-$x$
11 pages, 2 figures, version to be published
Nucl. Phys. B915 (2017) 384-391
10.1016/j.nuclphysb.2016.12.018
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this paper we give estimates for the proton--proton cross sections into pairs of quarkonium states $J/\psi$, $\psi(2S)$, $\Upsilon(1S)$ and $\Upsilon(2S)$ at the scheduled AFTER@LHC energy of $115$GeV. The estimates are based on the intrinsic heavy flavor mechanism which is observable for high values of $x_F$, a r...
[ { "created": "Thu, 24 Nov 2016 11:28:43 GMT", "version": "v1" }, { "created": "Fri, 13 Jan 2017 19:25:16 GMT", "version": "v2" } ]
2017-01-17
[ [ "Koshkarev", "Sergey", "" ], [ "Groote", "Stefan", "" ] ]
In this paper we give estimates for the proton--proton cross sections into pairs of quarkonium states $J/\psi$, $\psi(2S)$, $\Upsilon(1S)$ and $\Upsilon(2S)$ at the scheduled AFTER@LHC energy of $115$GeV. The estimates are based on the intrinsic heavy flavor mechanism which is observable for high values of $x_F$, a ran...
1412.4515
Roberto Onofrio
Roberto Onofrio
High-energy density implications of a gravitoweak unification scenario
null
Modern Physics Letters A 29, 1350187 (2014)
10.1142/S0217732313501873
null
hep-ph gr-qc hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We discuss how a scenario recently proposed for the morphing of macroscopic gravitation into weak interactions at the attometer scale affects our current understanding of high-energy density phenomena. We find that the Yukawa couplings of the fundamental fermions are directly related to their event horizons, setting ...
[ { "created": "Mon, 15 Dec 2014 10:00:36 GMT", "version": "v1" } ]
2014-12-16
[ [ "Onofrio", "Roberto", "" ] ]
We discuss how a scenario recently proposed for the morphing of macroscopic gravitation into weak interactions at the attometer scale affects our current understanding of high-energy density phenomena. We find that the Yukawa couplings of the fundamental fermions are directly related to their event horizons, setting an...
hep-ph/0406241
Jeppe R. Andersen
Jeppe R. Andersen
New possibilities in the study of NLL BFKL
5 pages, presented at the XXXIXth Rencontres de Moriond, QCD and Hadronic interactions, La Thuile, Italy
null
null
Cavendish-HEP-04-18, DAMTP-2004-65
hep-ph
null
The high energy limit of scattering processes in QCD is, at least on the purely theoretical level, described by the BFKL equation. However, many phenomenological studies of BFKL fail miserably when confronted with data. In this talk we will briefly review the application of (LL) BFKL in phenomenology, and critically ...
[ { "created": "Tue, 22 Jun 2004 14:56:17 GMT", "version": "v1" } ]
2007-05-23
[ [ "Andersen", "Jeppe R.", "" ] ]
The high energy limit of scattering processes in QCD is, at least on the purely theoretical level, described by the BFKL equation. However, many phenomenological studies of BFKL fail miserably when confronted with data. In this talk we will briefly review the application of (LL) BFKL in phenomenology, and critically ex...
hep-ph/9805460
Yuji Koike
Y. Koike, N. Nishiyama (Niigata Univ.) and K. Tanaka (Juntendo Univ.)
Renormalization of Chiral-Even Twist-3 Light-cone Wave Functions for Vector Mesons in QCD
9 pages in Latex. No figures. Submitted to Phys. Lett. B
Phys.Lett. B437 (1998) 153-159
10.1016/S0370-2693(98)00901-0
null
hep-ph
null
We present the one-loop anomalous dimension matrices for the chiral-even twist-3 (nonsinglet) conformal operators, which govern the scale-dependence of the vector meson light-cone wave functions through the conformal expansion. It is clarified that the constraints from the charge-conjugation invariance and the chiral...
[ { "created": "Tue, 26 May 1998 09:59:08 GMT", "version": "v1" }, { "created": "Wed, 27 May 1998 03:40:42 GMT", "version": "v2" }, { "created": "Thu, 28 May 1998 06:31:53 GMT", "version": "v3" } ]
2009-10-31
[ [ "Koike", "Y.", "", "Niigata Univ." ], [ "Nishiyama", "N.", "", "Niigata Univ." ], [ "Tanaka", "K.", "", "Juntendo Univ." ] ]
We present the one-loop anomalous dimension matrices for the chiral-even twist-3 (nonsinglet) conformal operators, which govern the scale-dependence of the vector meson light-cone wave functions through the conformal expansion. It is clarified that the constraints from the charge-conjugation invariance and the chiralit...
1503.05683
Kochelev Nikolai Innokentevich
Nikolai Kochelev, Hee-Jung Lee, Baiyang Zhang and Pengming Zhang
Anomalous pion production induced by nontrivial topological structure of QCD vacuum
5 pages, 4 figures, final version published in Phys.Rev.D92,034025 (2015)
Phys. Rev. D 92, 034025 (2015)
10.1103/PhysRevD.92.034025
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A new mechanism for the pion production in the high energy reactions is suggested. It is related to the possibility for direct production of the pions induced by instantons, topologically nontrivial gluonic excitations of QCD vacuum. This mechanism does not require any fragmentation functions for production of pseudo...
[ { "created": "Thu, 19 Mar 2015 09:52:43 GMT", "version": "v1" }, { "created": "Fri, 20 Mar 2015 23:58:11 GMT", "version": "v2" }, { "created": "Mon, 31 Aug 2015 07:32:35 GMT", "version": "v3" } ]
2015-09-02
[ [ "Kochelev", "Nikolai", "" ], [ "Lee", "Hee-Jung", "" ], [ "Zhang", "Baiyang", "" ], [ "Zhang", "Pengming", "" ] ]
A new mechanism for the pion production in the high energy reactions is suggested. It is related to the possibility for direct production of the pions induced by instantons, topologically nontrivial gluonic excitations of QCD vacuum. This mechanism does not require any fragmentation functions for production of pseudosc...
2304.14855
Manuel Pavon Valderrama
Mao-Jun Yan, Fang-Zheng Peng, Manuel Pavon Valderrama
Molecular charmed baryons and pentaquarks from light-meson exchange saturation
14 pages, 6 tables
null
null
null
hep-ph hep-ex hep-lat nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The spectrum of the $c qq$ baryons contains a few states whose nature is not clearly a three-quark composite and which might have a sizable baryon-meson component. Examples include the $\Sigma_c(2800)$ or the $\Lambda_c(2940)$. Here we explore the spectrum of two-body systems composed of a light, octet baryon and a c...
[ { "created": "Fri, 28 Apr 2023 14:06:13 GMT", "version": "v1" } ]
2023-05-01
[ [ "Yan", "Mao-Jun", "" ], [ "Peng", "Fang-Zheng", "" ], [ "Valderrama", "Manuel Pavon", "" ] ]
The spectrum of the $c qq$ baryons contains a few states whose nature is not clearly a three-quark composite and which might have a sizable baryon-meson component. Examples include the $\Sigma_c(2800)$ or the $\Lambda_c(2940)$. Here we explore the spectrum of two-body systems composed of a light, octet baryon and a cha...
1608.06470
Mateo Garcia Pepin
Antonio Delgado, Mateo Garcia-Pepin, Germano Nardini, Mariano Quiros
Natural Supersymmetry from Extra Dimensions
34 pages, 12 figures; v2, matches PRD published version
Phys. Rev. D 94, 095017 (2016)
10.1103/PhysRevD.94.095017
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We show that natural supersymmetry can be embedded in a five-dimensional theory with supersymmetry breaking \`a la Scherk-Schwarz (SS). There is no 'gluino-sucks' problem for stops localized in the four-dimensional brane and gluinos propagating in the full five-dimensional bulk, and sub-TeV stops are easily accommoda...
[ { "created": "Tue, 23 Aug 2016 11:33:05 GMT", "version": "v1" }, { "created": "Wed, 7 Dec 2016 13:36:00 GMT", "version": "v2" } ]
2016-12-08
[ [ "Delgado", "Antonio", "" ], [ "Garcia-Pepin", "Mateo", "" ], [ "Nardini", "Germano", "" ], [ "Quiros", "Mariano", "" ] ]
We show that natural supersymmetry can be embedded in a five-dimensional theory with supersymmetry breaking \`a la Scherk-Schwarz (SS). There is no 'gluino-sucks' problem for stops localized in the four-dimensional brane and gluinos propagating in the full five-dimensional bulk, and sub-TeV stops are easily accommodate...
hep-ph/0607158
Geraldine Servant
Lisa Randall and Geraldine Servant
Gravitational Waves from Warped Spacetime
18 pages, 15 figures; v2: discussion improved, in particular on the justification of the thick wall approximation. 6 figures added. 4 pi factor corrected in perturbativity bound. N-dependence displayed. Conclusions unchanged. JHEP version
JHEP 0705:054,2007
10.1088/1126-6708/2007/05/054
CERN-PH-TH/2006-133
hep-ph astro-ph gr-qc hep-th
null
We argue that the RSI model can provide a strong signature in gravitational waves. This signal is a relic stochastic background generated during the cosmological phase transition from an AdS-Schwarschild phase to the RS1 geometry that should occur at a temperature in the TeV range. We estimate the amplitude of the si...
[ { "created": "Fri, 14 Jul 2006 08:41:22 GMT", "version": "v1" }, { "created": "Fri, 4 May 2007 10:12:29 GMT", "version": "v2" } ]
2009-11-11
[ [ "Randall", "Lisa", "" ], [ "Servant", "Geraldine", "" ] ]
We argue that the RSI model can provide a strong signature in gravitational waves. This signal is a relic stochastic background generated during the cosmological phase transition from an AdS-Schwarschild phase to the RS1 geometry that should occur at a temperature in the TeV range. We estimate the amplitude of the sign...
2303.06576
Evan Grohs
E. Grohs, A. B. Balantekin
Implications on Cosmology from Dirac Neutrino Magnetic Moments
22 pages, 3 appendices, 14 figures. Contains updated list of references and corrections to typos. Matches version accepted in Phys. Rev. D
null
10.1103/PhysRevD.107.123502
null
hep-ph astro-ph.CO
http://creativecommons.org/licenses/by/4.0/
The mechanism for generating neutrino masses remains a puzzle in particle physics. If neutrino masses follow from a Dirac mass term, then neutrino states exist with opposite chirality compared to their weakly-interacting counterparts. These inactive states do not interact with their active counterparts at measurable ...
[ { "created": "Sun, 12 Mar 2023 05:17:39 GMT", "version": "v1" }, { "created": "Thu, 16 Mar 2023 23:40:51 GMT", "version": "v2" }, { "created": "Fri, 19 May 2023 09:14:07 GMT", "version": "v3" } ]
2023-06-14
[ [ "Grohs", "E.", "" ], [ "Balantekin", "A. B.", "" ] ]
The mechanism for generating neutrino masses remains a puzzle in particle physics. If neutrino masses follow from a Dirac mass term, then neutrino states exist with opposite chirality compared to their weakly-interacting counterparts. These inactive states do not interact with their active counterparts at measurable sc...
0807.3921
Leone Cavicchia
Leone Cavicchia
The NMSSM with m_h > 115 GeV and a moderate stop mass
21 pages, 12 figures; 2 references added, minor changes in text
null
10.1016/j.nuclphysb.2008.12.027
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the generic NMSSM with the coupling \lambda S H_1 H_2 at the limit of perturbativity, \lambda~0.7-0.8, and a moderate stop mass, m_{\tilde{t}} < 300 GeV. Respecting the LEP2 bounds and insisting on naturalness, we delimit the allowed region of parameter space and we study the spectrum and phenomenology of th...
[ { "created": "Thu, 24 Jul 2008 16:55:30 GMT", "version": "v1" }, { "created": "Wed, 17 Sep 2008 13:59:16 GMT", "version": "v2" }, { "created": "Fri, 17 Oct 2008 17:31:30 GMT", "version": "v3" } ]
2009-11-13
[ [ "Cavicchia", "Leone", "" ] ]
We study the generic NMSSM with the coupling \lambda S H_1 H_2 at the limit of perturbativity, \lambda~0.7-0.8, and a moderate stop mass, m_{\tilde{t}} < 300 GeV. Respecting the LEP2 bounds and insisting on naturalness, we delimit the allowed region of parameter space and we study the spectrum and phenomenology of the ...
hep-ph/9801325
Wilhelmus van Neerven
W.L. van Neerven
Second order QCD contributions to polarized spacelike and timelike processes
11 pages Latex, style file included.
Acta Phys.Polon. B29 (1998) 1175-1188
null
DESY 98-006
hep-ph
null
We will give an outline of the computation of the QCD corrections to the spin structure function g_1(x,Q^2) and the spin fragmentation function g_1^H(x,Q^2) which are measured in deep inelastic electron-proton scattering and in electron-positron annihilation respectively. In particular we show how to deal with the ga...
[ { "created": "Fri, 16 Jan 1998 13:40:11 GMT", "version": "v1" } ]
2007-05-23
[ [ "van Neerven", "W. L.", "" ] ]
We will give an outline of the computation of the QCD corrections to the spin structure function g_1(x,Q^2) and the spin fragmentation function g_1^H(x,Q^2) which are measured in deep inelastic electron-proton scattering and in electron-positron annihilation respectively. In particular we show how to deal with the gamm...
1405.7770
Axel Weber
F. Bastianelli, A. Huet, C. Schubert, R. Thakur, A. Weber
Integral representations combining ladders and crossed-ladders
39 pages, 10 pdf figures
null
10.1007/JHEP07(2014)066
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We use the worldline formalism to derive integral representations for three classes of amplitudes in scalar field theory: (i) the scalar propagator exchanging N momenta with a scalar background field (ii) the "half-ladder" with N rungs in x - space (iii) the four-point ladder with N rungs in x - space as well as in (...
[ { "created": "Fri, 30 May 2014 04:30:47 GMT", "version": "v1" } ]
2015-06-19
[ [ "Bastianelli", "F.", "" ], [ "Huet", "A.", "" ], [ "Schubert", "C.", "" ], [ "Thakur", "R.", "" ], [ "Weber", "A.", "" ] ]
We use the worldline formalism to derive integral representations for three classes of amplitudes in scalar field theory: (i) the scalar propagator exchanging N momenta with a scalar background field (ii) the "half-ladder" with N rungs in x - space (iii) the four-point ladder with N rungs in x - space as well as in (of...
hep-ph/0009071
Robert Perry
Sergio Szpigel and Robert J. Perry
The Similarity Renormalization Group
28 pages, 7 postscript figures
Published in Quantum Field Theory, A 20th Century Profile
null
null
hep-ph hep-th nucl-th
null
Quantum field theories require a cutoff to regulate divergences that result from local interactions, and yet physical results can not depend on the value of this cutoff. The renormalization group employs a transformation that changes the cutoff to isolate hamiltonians that produce cutoff-independent eigenvalues. The ...
[ { "created": "Wed, 6 Sep 2000 16:49:19 GMT", "version": "v1" } ]
2007-05-23
[ [ "Szpigel", "Sergio", "" ], [ "Perry", "Robert J.", "" ] ]
Quantum field theories require a cutoff to regulate divergences that result from local interactions, and yet physical results can not depend on the value of this cutoff. The renormalization group employs a transformation that changes the cutoff to isolate hamiltonians that produce cutoff-independent eigenvalues. The si...
hep-ph/0511274
Joaquim Matias
Joaquim Matias
The Angular Distribution of B0-> K*0(->K-pi+)l+l- at Large Recoil in and Beyond the SM
4 pages, 4 figures
PoS HEP2005:281,2006
null
null
hep-ph
null
We discuss, in detail, the K* polarization states in the exclusive B meson decay B0-> K*0(-> K-pi+)l^+l^- (l=e, \mu, \tau) in the low dilepton mass region. We focus on the study of the angular distribution of this decay that provides valuable information on the K* spin amplitudes A_perp, A_par, A0. This can give us a...
[ { "created": "Wed, 23 Nov 2005 14:23:16 GMT", "version": "v1" } ]
2011-04-11
[ [ "Matias", "Joaquim", "" ] ]
We discuss, in detail, the K* polarization states in the exclusive B meson decay B0-> K*0(-> K-pi+)l^+l^- (l=e, \mu, \tau) in the low dilepton mass region. We focus on the study of the angular distribution of this decay that provides valuable information on the K* spin amplitudes A_perp, A_par, A0. This can give us a h...
hep-ph/0003315
Michele Maltoni
M. Maltoni
Bounds on "charginos nearly degenerate with the lightest neutralino" mass from precision measurements
4 pages, LaTeX, 1 figure included. Talk given at PASCOS99 conference, Lake Tahoe, California, December 10-16, 1999
null
10.1142/9789812792433_0037
IFIC/00-20
hep-ph
null
Though LEP II direct searches still cannot exclude a chargino nearly degenerate with the lightest neutralino if its mass is only slightly above half of the Z boson mass and the sneutrino is light, it can be excluded indirectly analyzing precision data. In this particular limit simple analytical formulas for oblique e...
[ { "created": "Fri, 31 Mar 2000 10:52:22 GMT", "version": "v1" } ]
2016-11-03
[ [ "Maltoni", "M.", "" ] ]
Though LEP II direct searches still cannot exclude a chargino nearly degenerate with the lightest neutralino if its mass is only slightly above half of the Z boson mass and the sneutrino is light, it can be excluded indirectly analyzing precision data. In this particular limit simple analytical formulas for oblique ele...
2309.06182
Herschel A. Chawdhry
Herschel A. Chawdhry and Mathieu Pellen
Quantum algorithms for the simulation of perturbative QCD processes
10 pages, 1 figure. Contribution to the proceedings of RADCOR 2023
PoS (RADCOR2023) 087
null
FR-PHENO-2023-10, OUTP-23-09P
hep-ph hep-th quant-ph
http://creativecommons.org/licenses/by-nc-sa/4.0/
Quantum computers are expected to give major speed-ups for the simulation of quantum systems. In these conference proceedings, we discuss quantum algorithms for the simulation of perturbative Quantum Chromodynamics (QCD) processes. In particular, we describe quantum circuits for simulating the colour part of the inte...
[ { "created": "Tue, 12 Sep 2023 12:50:37 GMT", "version": "v1" } ]
2023-09-14
[ [ "Chawdhry", "Herschel A.", "" ], [ "Pellen", "Mathieu", "" ] ]
Quantum computers are expected to give major speed-ups for the simulation of quantum systems. In these conference proceedings, we discuss quantum algorithms for the simulation of perturbative Quantum Chromodynamics (QCD) processes. In particular, we describe quantum circuits for simulating the colour part of the intera...
2007.14287
Rico Z\"ollner
R. Z\"ollner, B. Kampfer
Quarkonia formation in a holographic gravity-dilaton background describing QCD thermodynamics
null
Particles 2021, 4(2), 159
null
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A holographic model of probe quarkonia is presented, where the dynamical gravity-dilaton background is adjusted to the thermodynamics of 2 +1 flavor QCD with physical quark masses. The quarkonia action is modified to account for a systematic study of the heavy-quark mass dependence. We focus on the $J/\psi$ and $\Ups...
[ { "created": "Tue, 28 Jul 2020 14:56:02 GMT", "version": "v1" } ]
2021-04-21
[ [ "Zöllner", "R.", "" ], [ "Kampfer", "B.", "" ] ]
A holographic model of probe quarkonia is presented, where the dynamical gravity-dilaton background is adjusted to the thermodynamics of 2 +1 flavor QCD with physical quark masses. The quarkonia action is modified to account for a systematic study of the heavy-quark mass dependence. We focus on the $J/\psi$ and $\Upsil...
2408.05265
Gherardo Vita
John Campbell, Tobias Neumann, and Gherardo Vita
Projection-to-Born-improved Subtractions at NNLO
24 pages, 15 figures
null
null
CERN-TH-2024-102, FERMILAB-PUB-24-0402-T
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
While the current frontier in fixed-order precision for collider observables is N$^3$LO, important steps are necessary to consolidate NNLO cross-section predictions with improved stability and efficiency. Slicing methods have been successfully applied to obtain NNLO and N$^3$LO predictions, but have shown poor perfor...
[ { "created": "Fri, 9 Aug 2024 18:00:00 GMT", "version": "v1" } ]
2024-08-13
[ [ "Campbell", "John", "" ], [ "Neumann", "Tobias", "" ], [ "Vita", "Gherardo", "" ] ]
While the current frontier in fixed-order precision for collider observables is N$^3$LO, important steps are necessary to consolidate NNLO cross-section predictions with improved stability and efficiency. Slicing methods have been successfully applied to obtain NNLO and N$^3$LO predictions, but have shown poor performa...
2403.20044
Tao Wang
Yang Shi, Towe Wang
Compton scattering in Bandos-Lechner-Sorokin-Townsend nonlinear electrodynamics
11 pages, 5 figures
null
null
null
hep-ph physics.optics
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The nonlinear electrodynamics proposed by Bandos, Lechner, Sorokin and Townsend is a remarkable theory that unifies Maxwell, Bialynicki-Birula and ModMax theories, which are known theories invariant under conformal transformations and electromagnetic duality transformations. In the Bandos-Lechner-Sorokin-Townsend non...
[ { "created": "Fri, 29 Mar 2024 08:29:30 GMT", "version": "v1" } ]
2024-04-01
[ [ "Shi", "Yang", "" ], [ "Wang", "Towe", "" ] ]
The nonlinear electrodynamics proposed by Bandos, Lechner, Sorokin and Townsend is a remarkable theory that unifies Maxwell, Bialynicki-Birula and ModMax theories, which are known theories invariant under conformal transformations and electromagnetic duality transformations. In the Bandos-Lechner-Sorokin-Townsend nonli...
1606.07477
Stephen Adler
Stephen L. Adler
Coleman-Weinberg symmetry breaking in $SU(8)$ induced by a third rank antisymmetric tensor scalar field II: the fermion spectrum
Latex, 29 pages; revised and expanded from the initial posting
J. Phys. A: Math. Theor. 50, 295401 (2017)
10.1088/1751-8121/aa768f
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We continue our study of Coleman-Weinberg symmetry breaking induced by a third rank antisymmetric tensor scalar, in the context of the $SU(8)$ model we proposed earlier. We focus in this paper on qualitative features that will determine whether the model can make contact with the observed particle spectrum. We discus...
[ { "created": "Thu, 23 Jun 2016 21:04:06 GMT", "version": "v1" }, { "created": "Sun, 10 Jul 2016 03:12:18 GMT", "version": "v2" }, { "created": "Tue, 19 Jul 2016 19:41:45 GMT", "version": "v3" }, { "created": "Tue, 13 Dec 2016 12:46:29 GMT", "version": "v4" }, { "c...
2018-06-05
[ [ "Adler", "Stephen L.", "" ] ]
We continue our study of Coleman-Weinberg symmetry breaking induced by a third rank antisymmetric tensor scalar, in the context of the $SU(8)$ model we proposed earlier. We focus in this paper on qualitative features that will determine whether the model can make contact with the observed particle spectrum. We discuss ...
1103.4437
Poulose Poulose Dr.
S. Hesselbach, S. Moretti, S. Munir, P. Poulose
CP-violating Higgs sector of the MSSM through gluon.gluon --> H1 --> gamma.gamma
4 pages, 3 figures, presented at DISCRETE 2010, Rome, 6-11 December 2010
null
10.1088/1742-6596/335/1/012020
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the effect of explicit CP violation in the Higgs sectors of the MSSM in the di-photon decay of the lightest CP-mixed Higgs state. Further it is shown that the gluon fusion production mechanism along with the di-photon decay enhances CP-violating effects for a large set of suitably chosen parameter values.
[ { "created": "Wed, 23 Mar 2011 05:03:45 GMT", "version": "v1" } ]
2015-05-27
[ [ "Hesselbach", "S.", "" ], [ "Moretti", "S.", "" ], [ "Munir", "S.", "" ], [ "Poulose", "P.", "" ] ]
We study the effect of explicit CP violation in the Higgs sectors of the MSSM in the di-photon decay of the lightest CP-mixed Higgs state. Further it is shown that the gluon fusion production mechanism along with the di-photon decay enhances CP-violating effects for a large set of suitably chosen parameter values.
2405.15387
Shu-Min Zhao
Xing-Yu Han, Jiao Ma, Long Ruan, Xi Wang, Xing-Xing Dong, Shu-Min Zhao
Study some two loop contribution to muon MDM in the N-B-LSSM
null
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
It is well known that the muon magnetic dipole moment (MDM) has close relation with the new physics (NP) in the development of the Standard Model (SM). Combined with the Fermilab National Accelerator Laboratory (FNAL) and the Brookhaven National Laboratory (BNL) E821 result, the departure from the SM prediction is ab...
[ { "created": "Fri, 24 May 2024 09:36:58 GMT", "version": "v1" }, { "created": "Sat, 29 Jun 2024 13:05:07 GMT", "version": "v2" } ]
2024-07-02
[ [ "Han", "Xing-Yu", "" ], [ "Ma", "Jiao", "" ], [ "Ruan", "Long", "" ], [ "Wang", "Xi", "" ], [ "Dong", "Xing-Xing", "" ], [ "Zhao", "Shu-Min", "" ] ]
It is well known that the muon magnetic dipole moment (MDM) has close relation with the new physics (NP) in the development of the Standard Model (SM). Combined with the Fermilab National Accelerator Laboratory (FNAL) and the Brookhaven National Laboratory (BNL) E821 result, the departure from the SM prediction is abou...
2103.13896
Rohit Gupta
Rohit Gupta and Satyajit Jena
A unified formalism to study $soft$ as well as $hard$ part of the transverse momentum spectra
presented at DAE-BRNS HEP Symposium Dec 2020, NISER, Jatni, Odisha, India
null
null
null
hep-ph
http://creativecommons.org/licenses/by-nc-nd/4.0/
Transverse momentum $p_T$ spectra of final state particles produced in high energy heavy-ion collision can be divided into two distinct regions based on the difference in the underlying particle production process. We have provided a unified formalism to explain both low- and high-$p_T$ regime of spectra in a consist...
[ { "created": "Thu, 25 Mar 2021 15:02:54 GMT", "version": "v1" } ]
2021-03-26
[ [ "Gupta", "Rohit", "" ], [ "Jena", "Satyajit", "" ] ]
Transverse momentum $p_T$ spectra of final state particles produced in high energy heavy-ion collision can be divided into two distinct regions based on the difference in the underlying particle production process. We have provided a unified formalism to explain both low- and high-$p_T$ regime of spectra in a consisten...
1310.3029
Shunsuke Ohkoda
Shunsuke Ohkoda, Shigehiro Yasui, Atsushi Hosaka
Decays of Zb -> Upsilon + pi via triangle diagrams in heavy meson molecules
10 pages, 5 figures
Phys. Rev. D 89, 074029 (2014)
10.1103/PhysRevD.89.074029
KEK-TH-1677, J-PARC-TH-30
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Bottomonium-like resonances Zb(10610) and Zb'(10650) are good candidates of hadronic molecules composed of BBbar* (or B*Bbar) and B*Bbar*, respectively. Considering Zb (Zb') as heavy meson molecules, we investigate the decays of Zb(')^+ -> Upsilon (nS) pi^+$ in terms of the heavy meson effective theory. We find that ...
[ { "created": "Fri, 11 Oct 2013 06:35:36 GMT", "version": "v1" } ]
2014-04-23
[ [ "Ohkoda", "Shunsuke", "" ], [ "Yasui", "Shigehiro", "" ], [ "Hosaka", "Atsushi", "" ] ]
Bottomonium-like resonances Zb(10610) and Zb'(10650) are good candidates of hadronic molecules composed of BBbar* (or B*Bbar) and B*Bbar*, respectively. Considering Zb (Zb') as heavy meson molecules, we investigate the decays of Zb(')^+ -> Upsilon (nS) pi^+$ in terms of the heavy meson effective theory. We find that th...
1307.5682
Sreemoyee Sarkar
S. Sarkar, K. Pal and A. K. Dutt-Mazumder
Role of Magnetic Interaction in Dense Plasma
null
Advances in High Energy Physics, 530895 (2013)
null
null
hep-ph astro-ph.HE nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Quasiparticle excitations and associated phenomena of energy and momentum transfer rates have been calculated in terms of the drag and the diffusion coefficients exposing clearly the dominance of the magnetic interaction over its electric counterpart. The results have been compared with the finite temperature results...
[ { "created": "Mon, 22 Jul 2013 12:32:30 GMT", "version": "v1" } ]
2013-07-23
[ [ "Sarkar", "S.", "" ], [ "Pal", "K.", "" ], [ "Dutt-Mazumder", "A. K.", "" ] ]
Quasiparticle excitations and associated phenomena of energy and momentum transfer rates have been calculated in terms of the drag and the diffusion coefficients exposing clearly the dominance of the magnetic interaction over its electric counterpart. The results have been compared with the finite temperature results h...
1208.0375
Takahiro Sasaki
Takahiro Sasaki, Hiroaki Kouno, Masanobu Yahiro
A practical solution to the sign problem at finite theta-vacuum angle
5 pages, 6 figures
null
10.1103/PhysRevD.87.056003
null
hep-ph hep-lat nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We propose a practical way of circumventing the sign problem in lattice QCD simulations with a theta-vacuum term. This method is the reweighting method for the QCD Lagrangian after the U_A(1) transformation. In the Lagrangian, the P-odd mass term as a cause of the sign problem is minimized. In order to find out a goo...
[ { "created": "Wed, 1 Aug 2012 23:25:11 GMT", "version": "v1" } ]
2013-03-14
[ [ "Sasaki", "Takahiro", "" ], [ "Kouno", "Hiroaki", "" ], [ "Yahiro", "Masanobu", "" ] ]
We propose a practical way of circumventing the sign problem in lattice QCD simulations with a theta-vacuum term. This method is the reweighting method for the QCD Lagrangian after the U_A(1) transformation. In the Lagrangian, the P-odd mass term as a cause of the sign problem is minimized. In order to find out a good ...
hep-ph/0406185
Krzysztof Urbanowski
K. Urbanowski
On the scalar product of short and long living states of neutral kaons in the CPT invariant system
LaTeX2e, 21 pages, new comments nad references added
Acta Phys.Polon.B37:1727-1744,2006
null
null
hep-ph hep-ex
null
This paper contains a detailed analysis of the properties of the scalar product of short and long living superpositions of neutral $|K_{0}>$, $|{\bar{K}}_{0}>$ mesons. It is shown for the exact effective Hamiltonian for neutral meson subsystem that the scalar product of its eigenvectors, which correspond with these s...
[ { "created": "Thu, 17 Jun 2004 06:51:32 GMT", "version": "v1" }, { "created": "Sun, 27 Jun 2004 15:16:47 GMT", "version": "v2" }, { "created": "Fri, 28 Jan 2005 16:18:14 GMT", "version": "v3" }, { "created": "Fri, 30 Sep 2005 11:16:49 GMT", "version": "v4" } ]
2016-09-06
[ [ "Urbanowski", "K.", "" ] ]
This paper contains a detailed analysis of the properties of the scalar product of short and long living superpositions of neutral $|K_{0}>$, $|{\bar{K}}_{0}>$ mesons. It is shown for the exact effective Hamiltonian for neutral meson subsystem that the scalar product of its eigenvectors, which correspond with these sho...
2207.10912
Xiaohu Sun
Botao Guo, Xiaohu Sun, Licheng Zhang, Zhe Li, Yong Ban
Search for the Higgs boson pair production in the $b\bar{b}\mu^+\mu^-$ final state at the LHC
null
null
10.1103/PhysRevD.107.034014
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The Higgs boson pair production via gluon-gluon fusion and vector boson fusion in the $b\bar{b}\mu^+\mu^-$ final state at the LHC is studied to probe the Higgs self-coupling $\kappa_\lambda$ and the four-boson HHVV coupling $\kappa_{\rm{2V}}$ for the first time. A cut-based analysis and a machine learning analysis us...
[ { "created": "Fri, 22 Jul 2022 07:11:45 GMT", "version": "v1" }, { "created": "Mon, 29 Aug 2022 13:36:42 GMT", "version": "v2" }, { "created": "Fri, 2 Dec 2022 13:13:12 GMT", "version": "v3" } ]
2023-03-08
[ [ "Guo", "Botao", "" ], [ "Sun", "Xiaohu", "" ], [ "Zhang", "Licheng", "" ], [ "Li", "Zhe", "" ], [ "Ban", "Yong", "" ] ]
The Higgs boson pair production via gluon-gluon fusion and vector boson fusion in the $b\bar{b}\mu^+\mu^-$ final state at the LHC is studied to probe the Higgs self-coupling $\kappa_\lambda$ and the four-boson HHVV coupling $\kappa_{\rm{2V}}$ for the first time. A cut-based analysis and a machine learning analysis usin...
hep-ph/0111300
Arnd Leike
A. Leike
Why extra gauge Bosons should exist and how to hunt them
3 pagex LaTex, talk presented at the symposium ``100 Years Werner Heisenberg -- Works and Impact'', Bamberg, Germany, September 2001
Fortsch.Phys. 50 (2002) 538-540
10.1002/1521-3978(200205)50:5/7<538::AID-PROP538>3.0.CO;2-7
LMU-16/01
hep-ph
null
Werner Heisenberg's work is the foundation for many topics of present research. This is also true for the search for extra gauge bosons. The prospects of future colliders in this search are shortly mentioned.
[ { "created": "Fri, 23 Nov 2001 09:41:34 GMT", "version": "v1" } ]
2015-06-25
[ [ "Leike", "A.", "" ] ]
Werner Heisenberg's work is the foundation for many topics of present research. This is also true for the search for extra gauge bosons. The prospects of future colliders in this search are shortly mentioned.
2305.12225
Jason Baretz
Jason Baretz and Nicholas Carrara and Jacob Hollingsworth and Daniel Whiteson
Visualization and Efficient Generation of Constrained High-dimensional Theoretical Parameter Spaces
Expanded on motivation for methods, added additional metrics and further discussion/comparison of methods
null
null
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We describe a set of novel methods for efficiently sampling high-dimensional parameter spaces of physical theories defined at high energies, but constrained by experimental measurements made at lower energies. Often, theoretical models such as supersymmetry are defined by many parameters, $\mathcal{O}(10-100)$, expre...
[ { "created": "Sat, 20 May 2023 16:25:08 GMT", "version": "v1" }, { "created": "Tue, 3 Oct 2023 14:18:38 GMT", "version": "v2" } ]
2023-10-04
[ [ "Baretz", "Jason", "" ], [ "Carrara", "Nicholas", "" ], [ "Hollingsworth", "Jacob", "" ], [ "Whiteson", "Daniel", "" ] ]
We describe a set of novel methods for efficiently sampling high-dimensional parameter spaces of physical theories defined at high energies, but constrained by experimental measurements made at lower energies. Often, theoretical models such as supersymmetry are defined by many parameters, $\mathcal{O}(10-100)$, express...
hep-ph/9604334
Ed Stoeffhaas
V. Barger, M.S. Berger, J.F. Gunion, and T. Han
Particle Physics Opportunities at $\mu^+\mu^-$ Colliders
19 pages, Latex, uses psfig.tex to place 16 postscript figures. Based on talks given at the Symposium on Physics Potential and Development of $\mu^+\mu^-$ Colliders, San Francisco, California, December 13-15, 1995. Compressed postscript version of paper with figures available at http://phenom.physics.wisc.edu/p...
Nucl.Phys.Proc.Suppl.51A:13-31,1996
null
MADPH-96-939, UCD-96-12
hep-ph hep-ex
null
We discuss the capabilities of future muon colliders to resolve important particle physics questions. A collider with c.m. energy $\sqrt s = 100$ to 500~GeV offers the unique opportunity to produce Higgs bosons in the $s$-channel and thereby measure the Higgs masses, total widths and several partial widths to high pr...
[ { "created": "Tue, 16 Apr 1996 17:12:42 GMT", "version": "v1" } ]
2009-09-15
[ [ "Barger", "V.", "" ], [ "Berger", "M. S.", "" ], [ "Gunion", "J. F.", "" ], [ "Han", "T.", "" ] ]
We discuss the capabilities of future muon colliders to resolve important particle physics questions. A collider with c.m. energy $\sqrt s = 100$ to 500~GeV offers the unique opportunity to produce Higgs bosons in the $s$-channel and thereby measure the Higgs masses, total widths and several partial widths to high prec...
hep-ph/0410346
Giovannangeli
P. Giovannangeli
Two loop renormalisation of the magnetic coupling in hot QCD and spatial Wilson loop
5 pages. To appear in the proceedings of 6th Conference on Strong and Electroweak Matter 2004 (SEWM04), Helsinki, Finland, 16-19 Jun 2004
null
10.1142/9789812702159_0033
null
hep-ph hep-lat
null
With the known two loop renormalisation of the magnetic coupling, the 4D results of the spatial Wilson loop are compared to the prediction from the magnetostatic sector.
[ { "created": "Tue, 26 Oct 2004 16:33:40 GMT", "version": "v1" } ]
2017-08-23
[ [ "Giovannangeli", "P.", "" ] ]
With the known two loop renormalisation of the magnetic coupling, the 4D results of the spatial Wilson loop are compared to the prediction from the magnetostatic sector.
2204.04202
Yang Zhang
Jin Min Yang, Yang Zhang
Low energy SUSY confronted with new measurements of W-boson mass and muon g-2
8 pages, 4 figures, 3 tabels, published in Science Bulletin
Science Bulletin, 2022
10.1016/j.scib.2022.06.007
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The new CDF II measurement of $W$-boson mass shows a 7$\sigma$ deviation from the Standard Model (SM) prediction, while the recent FNAL measurement of the muon $g-2$ shows a 4.2$\sigma$ deviation (combined with the BNL result) from the SM. Both of them strongly indicate new physics beyond the SM. In this work we stud...
[ { "created": "Fri, 8 Apr 2022 17:56:23 GMT", "version": "v1" }, { "created": "Fri, 15 Apr 2022 15:17:51 GMT", "version": "v2" }, { "created": "Mon, 13 Jun 2022 03:08:55 GMT", "version": "v3" } ]
2022-06-14
[ [ "Yang", "Jin Min", "" ], [ "Zhang", "Yang", "" ] ]
The new CDF II measurement of $W$-boson mass shows a 7$\sigma$ deviation from the Standard Model (SM) prediction, while the recent FNAL measurement of the muon $g-2$ shows a 4.2$\sigma$ deviation (combined with the BNL result) from the SM. Both of them strongly indicate new physics beyond the SM. In this work we study ...
1108.4278
Martin Spinrath
Stefan Antusch, Stephen F. King, Christoph Luhn, Martin Spinrath
Trimaximal mixing with predicted \theta_13 from a new type of constrained sequential dominance
13 pages, 2 figures; version to appear in Nuclear Physics B
null
10.1016/j.nuclphysb.2011.11.009
MPP-2011-101; SHEP-11-23; SISSA 44/2011/EP
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Following the recent T2K indication of a sizeable reactor angle, we present a class of models which fix \theta_{13} while preserving trimaximal solar mixing. The models are based on a new type of constrained sequential dominance involving new vacuum alignments, along the (1,2,0)^T or (1,0,2)^T directions in flavour s...
[ { "created": "Mon, 22 Aug 2011 11:23:06 GMT", "version": "v1" }, { "created": "Wed, 31 Aug 2011 08:33:24 GMT", "version": "v2" }, { "created": "Mon, 14 Nov 2011 11:51:01 GMT", "version": "v3" } ]
2011-11-15
[ [ "Antusch", "Stefan", "" ], [ "King", "Stephen F.", "" ], [ "Luhn", "Christoph", "" ], [ "Spinrath", "Martin", "" ] ]
Following the recent T2K indication of a sizeable reactor angle, we present a class of models which fix \theta_{13} while preserving trimaximal solar mixing. The models are based on a new type of constrained sequential dominance involving new vacuum alignments, along the (1,2,0)^T or (1,0,2)^T directions in flavour spa...
0907.3709
Alexander Andrianov A
Alexander A. Andrianov, Domenec Espriu, Paola Giacconi and Roberto Soldati
Anomalous positron excess from Lorentz-violating QED
13 pages, few refs and comments on electron radiation added
JHEP 0909:057,2009
10.1088/1126-6708/2009/09/057
UB-ECM-PF-09/19, ICCUB-09-218
hep-ph astro-ph.HE gr-qc hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We entertain the idea that a suitable background of cold (very low momentum) pseudoscalar particles or condensate, may trigger a background that effectively generates Lorentz-invariance violation. This aether-like background induces a Chern-Simons modification of QED. Physics is different in different frames and, in ...
[ { "created": "Tue, 21 Jul 2009 17:29:29 GMT", "version": "v1" }, { "created": "Sat, 5 Sep 2009 05:06:30 GMT", "version": "v2" } ]
2009-12-10
[ [ "Andrianov", "Alexander A.", "" ], [ "Espriu", "Domenec", "" ], [ "Giacconi", "Paola", "" ], [ "Soldati", "Roberto", "" ] ]
We entertain the idea that a suitable background of cold (very low momentum) pseudoscalar particles or condensate, may trigger a background that effectively generates Lorentz-invariance violation. This aether-like background induces a Chern-Simons modification of QED. Physics is different in different frames and, in th...
2202.02165
Xuhui Jiang
Xu-Hui Jiang, Aurelio Juste, Ying-Ying Li, Tao Liu
Detecting New Physics as Novelty -- Complementarity Matters
32 pages, 20 figures
JHEP 10 (2022) 085
10.1007/JHEP10(2022)085
FERMILAB-PUB-22-035-T
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Novelty detection is a task of machine learning that aims at detecting novel events without a prior knowledge. In particular, its techniques can be applied to detect unexpected signals from new phenomena at colliders. In this paper, we develop an analysis scheme that exploits the complementarity, originally studied i...
[ { "created": "Fri, 4 Feb 2022 14:46:55 GMT", "version": "v1" }, { "created": "Sat, 10 Dec 2022 07:11:16 GMT", "version": "v2" } ]
2022-12-13
[ [ "Jiang", "Xu-Hui", "" ], [ "Juste", "Aurelio", "" ], [ "Li", "Ying-Ying", "" ], [ "Liu", "Tao", "" ] ]
Novelty detection is a task of machine learning that aims at detecting novel events without a prior knowledge. In particular, its techniques can be applied to detect unexpected signals from new phenomena at colliders. In this paper, we develop an analysis scheme that exploits the complementarity, originally studied in ...
2212.03541
Jia-Jie Jiang
Jia-Jie Jiang, Ya-Zhao Xiao, Jiajia Qin, Xiaohua Li, Xun Chen
Three-quark potential at finite temperature and chemical potential
null
null
10.1088/1674-1137/ac9894
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Using gauge/gravity duality, we study the potential energy and the melting of triply heavy baryon at finite temperature and chemical potential in this paper. First, we calculate three-quark potential and compare the results with quark-antiquark potential. With the increase of temperature and chemical potential, the p...
[ { "created": "Wed, 7 Dec 2022 09:44:15 GMT", "version": "v1" } ]
2022-12-21
[ [ "Jiang", "Jia-Jie", "" ], [ "Xiao", "Ya-Zhao", "" ], [ "Qin", "Jiajia", "" ], [ "Li", "Xiaohua", "" ], [ "Chen", "Xun", "" ] ]
Using gauge/gravity duality, we study the potential energy and the melting of triply heavy baryon at finite temperature and chemical potential in this paper. First, we calculate three-quark potential and compare the results with quark-antiquark potential. With the increase of temperature and chemical potential, the pot...
1110.0762
Semikoz Dmitry
Ram Brustein, Dmitri Semikoz
Apparent superluminal neutrino propagation caused by nonlinear coherent interactions in matter
7 pages
null
10.1016/j.physletb.2011.11.039
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Quantum coherence can significantly increase the strength of the forward scattering of neutrinos propagating through the Earth and interacting with matter. The index of refraction of the neutrinos propagating in a medium and hence their phase velocity is determined by the forward scattering. So, depending on the natu...
[ { "created": "Tue, 4 Oct 2011 17:32:27 GMT", "version": "v1" } ]
2015-05-30
[ [ "Brustein", "Ram", "" ], [ "Semikoz", "Dmitri", "" ] ]
Quantum coherence can significantly increase the strength of the forward scattering of neutrinos propagating through the Earth and interacting with matter. The index of refraction of the neutrinos propagating in a medium and hence their phase velocity is determined by the forward scattering. So, depending on the nature...
hep-ph/0111413
Ismd31
Thomas Nunnemann (for the DO and CDF Collaborations)
Measurements of Higher Order Effects in QCD from the Tevatron Collider
4 pages, 3 figures in epsi file, talk given at XXXI International Symposium on Multiparticle Dynamics, Sept 1-7, 2001, Datong China. URL http://ismd31.ccnu.edu.cn/
null
10.1142/9789812778048_0040
null
hep-ph
null
Quantum Chromodynamics has been studied extensively at Fermilab's Tevatron collider. Between 1992 and 1996 the D{\O}and CDF experiments, each accumulated approximately $100 \mathrm{pb}^{-1}$ of proton-antiproton collisions at a center-of-mass energy $\sqrt{s}=1800 \mathrm{GeV}$ and $\sim 0.5 \mathrm{pb}^{-1}$ at $\sq...
[ { "created": "Thu, 29 Nov 2001 13:04:32 GMT", "version": "v1" } ]
2019-08-14
[ [ "Nunnemann", "Thomas", "", "for the DO and CDF Collaborations" ] ]
Quantum Chromodynamics has been studied extensively at Fermilab's Tevatron collider. Between 1992 and 1996 the D{\O}and CDF experiments, each accumulated approximately $100 \mathrm{pb}^{-1}$ of proton-antiproton collisions at a center-of-mass energy $\sqrt{s}=1800 \mathrm{GeV}$ and $\sim 0.5 \mathrm{pb}^{-1}$ at $\sqrt...
1501.06505
Francesca Aceti
F. Aceti, J. M. Dias and E. Oset
$f_1(1285)$ decays into $a_0(980)\pi^0$, $f_0(980)\pi^0$ and isospin breaking
null
null
10.1140/epja/i2015-15048-5
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We evaluate the decay width for the processes $f_1(1285) \to \pi^0 a_0(980)$ and $f_1(1285) \to \pi^0 f_0(980)$ taking into account that all three resonances are dynamically generated from the meson-meson interaction, the $f_1(1285)$ from $K^* \bar K -c.c$ and the $a_0(980)$, $f_0(980)$ from $\pi \eta, K \bar K$ and ...
[ { "created": "Mon, 26 Jan 2015 18:07:44 GMT", "version": "v1" } ]
2015-05-20
[ [ "Aceti", "F.", "" ], [ "Dias", "J. M.", "" ], [ "Oset", "E.", "" ] ]
We evaluate the decay width for the processes $f_1(1285) \to \pi^0 a_0(980)$ and $f_1(1285) \to \pi^0 f_0(980)$ taking into account that all three resonances are dynamically generated from the meson-meson interaction, the $f_1(1285)$ from $K^* \bar K -c.c$ and the $a_0(980)$, $f_0(980)$ from $\pi \eta, K \bar K$ and $\...
2301.05061
Pankaj Borah
Pankaj Borah, Pradipta Ghosh, Sourov Roy and Abhijit Kumar Saha
Electroweak Phase Transition in a Right-Handed Neutrino Superfield Extended NMSSM
77 pages, 17 figures, 4 tables, discussion on semi-analytic computation and gauge dependency added, version accepted for publication in JHEP
null
null
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Supersymmetric models with singlet extensions can accommodate single- or multi-step first-order phase transitions (FOPT) along the various constituent field directions. Such a framework can also produce Gravitational Waves, detectable at the upcoming space-based interferometers, e.g., U-DECIGO. We explore the dynamic...
[ { "created": "Thu, 12 Jan 2023 14:58:39 GMT", "version": "v1" }, { "created": "Fri, 20 Jan 2023 11:13:37 GMT", "version": "v2" }, { "created": "Tue, 25 Jul 2023 16:59:13 GMT", "version": "v3" } ]
2023-07-26
[ [ "Borah", "Pankaj", "" ], [ "Ghosh", "Pradipta", "" ], [ "Roy", "Sourov", "" ], [ "Saha", "Abhijit Kumar", "" ] ]
Supersymmetric models with singlet extensions can accommodate single- or multi-step first-order phase transitions (FOPT) along the various constituent field directions. Such a framework can also produce Gravitational Waves, detectable at the upcoming space-based interferometers, e.g., U-DECIGO. We explore the dynamics ...
hep-ph/0412317
Francesco Murgia
U. D'Alesio, F. Murgia (University and INFN, Cagliari, Italy)
Parton intrinsic motion: unpolarized cross sections and the Sivers effect in inclusive particle production
LaTeX2e, 4 pages, 4 ps figures, uses ws-procs9x6. Talk delivered by F. Murgia at the ``16th International Spin Physics Symposium'', SPIN2004, October 10-16, 2004, Trieste, Italy
null
10.1142/9789812701909_0045
null
hep-ph
null
We present a detailed study, performed in the framework of LO perturbative QCD with the inclusion of spin and k_T effects, of unpolarized cross sections for the Drell-Yan process and for inclusive pion and photon production in hadronic collisions, in different kinematical situations. We find a satisfactory agreement ...
[ { "created": "Tue, 21 Dec 2004 17:39:12 GMT", "version": "v1" } ]
2017-08-23
[ [ "D'Alesio", "U.", "", "University and INFN, Cagliari, Italy" ], [ "Murgia", "F.", "", "University and INFN, Cagliari, Italy" ] ]
We present a detailed study, performed in the framework of LO perturbative QCD with the inclusion of spin and k_T effects, of unpolarized cross sections for the Drell-Yan process and for inclusive pion and photon production in hadronic collisions, in different kinematical situations. We find a satisfactory agreement be...
0911.1974
Fred Myhrer
F. Myhrer and A.W. Thomas
Understanding the proton's spin structure
Review article for J. Phys. G, 1 figure, 22 pages
J.Phys.G37:023101,2010
10.1088/0954-3899/37/2/023101
ADP-09-16/T694 and JLAB-THY-09-1097
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We discuss the tremendous progress that has been towards an understanding of how the spin of the proton is distributed on its quark and gluon constituents. This is a problem that began in earnest twenty years ago with the discovery of the proton ``spin crisis'' by the European Muon Collaboration. The discoveries prom...
[ { "created": "Tue, 10 Nov 2009 19:19:16 GMT", "version": "v1" } ]
2014-11-20
[ [ "Myhrer", "F.", "" ], [ "Thomas", "A. W.", "" ] ]
We discuss the tremendous progress that has been towards an understanding of how the spin of the proton is distributed on its quark and gluon constituents. This is a problem that began in earnest twenty years ago with the discovery of the proton ``spin crisis'' by the European Muon Collaboration. The discoveries prompt...
2012.12165
Marcel Wald
Muslem Rahimi, Marcel Wald
QCD sum rules for parameters of the $B$-meson distribution amplitudes
31 pages, 12 figures; corrected format, included source files, improved numerical analysis
Phys. Rev. D 104, 016027 (2021)
10.1103/PhysRevD.104.016027
P3H-20-082, SI-HEP-2020-35
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We obtain new estimates for the parameters $\lambda_{E}^2$, $\lambda_H^2$ and their ratio $\mathcal{R} = \lambda_{E}^2/\lambda_H^2$, which appear in the second moments of the $B$-meson light-cone distribution amplitudes defined in the heavy-quark effective field theory. The computation is based on two-point QCD sum r...
[ { "created": "Tue, 22 Dec 2020 16:55:48 GMT", "version": "v1" }, { "created": "Wed, 28 Jul 2021 15:16:59 GMT", "version": "v2" }, { "created": "Wed, 4 Aug 2021 13:19:40 GMT", "version": "v3" } ]
2021-08-11
[ [ "Rahimi", "Muslem", "" ], [ "Wald", "Marcel", "" ] ]
We obtain new estimates for the parameters $\lambda_{E}^2$, $\lambda_H^2$ and their ratio $\mathcal{R} = \lambda_{E}^2/\lambda_H^2$, which appear in the second moments of the $B$-meson light-cone distribution amplitudes defined in the heavy-quark effective field theory. The computation is based on two-point QCD sum rul...
1608.05218
Valery Schegelsky A
V.A. Schegelsky and M.G. Ryskin
Small size sources of secondaries observed in pp-collisions via Bose-Einstein correlations at the LHC ATLAS experiment
ATLAS management did ask me to withdraw this article to be publish later on as Collaboration paper
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Bose-Einstein correlations in proton-proton collisions at the LHC are well descried by the formula with two different scales. It is shown for the first time that the pions are produced by few small size sources distributed over a much larger area in impact parameter space occupied by the interaction amplitude. The de...
[ { "created": "Thu, 18 Aug 2016 09:39:05 GMT", "version": "v1" }, { "created": "Tue, 29 Nov 2016 18:15:33 GMT", "version": "v2" }, { "created": "Tue, 10 Apr 2018 19:35:42 GMT", "version": "v3" }, { "created": "Tue, 18 Jun 2019 19:28:01 GMT", "version": "v4" } ]
2019-06-21
[ [ "Schegelsky", "V. A.", "" ], [ "Ryskin", "M. G.", "" ] ]
Bose-Einstein correlations in proton-proton collisions at the LHC are well descried by the formula with two different scales. It is shown for the first time that the pions are produced by few small size sources distributed over a much larger area in impact parameter space occupied by the interaction amplitude. The depe...
2001.05110
Li-Ye Xiao
Li-Ye Xiao, Kai-Lei Wang, Ming-Sheng Liu and Xian-Hui Zhong
Possible interpretation of the newly observed $\Omega_b$ states
8 pages,3 figures
null
10.1140/epjc/s10052-020-7823-z
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Inspired by the newly observed $\Omega_b$ states by the LHCb Collaboration, we investigate the two-body strong decays of the low-lying $\lambda$-mode $\Omega_b$ baryons up to $N=2$ shell using the chiral quark model within the $j$-$j$ coupling scheme. Our results indicate that: (i) the newly observed states $\Omega_b...
[ { "created": "Wed, 15 Jan 2020 02:48:10 GMT", "version": "v1" } ]
2020-04-22
[ [ "Xiao", "Li-Ye", "" ], [ "Wang", "Kai-Lei", "" ], [ "Liu", "Ming-Sheng", "" ], [ "Zhong", "Xian-Hui", "" ] ]
Inspired by the newly observed $\Omega_b$ states by the LHCb Collaboration, we investigate the two-body strong decays of the low-lying $\lambda$-mode $\Omega_b$ baryons up to $N=2$ shell using the chiral quark model within the $j$-$j$ coupling scheme. Our results indicate that: (i) the newly observed states $\Omega_b(6...
1108.0483
Kaushik Bhattacharya
Kaushik Bhattacharya, Suratna Das
Thermodynamics of the Lee-Wick partners: An alternative approach
17 pages, 2 figures. Some minor typos corrected. To be published in Physical Review D
Phys.Rev.D84:045023,2011
10.1103/PhysRevD.84.045023
null
hep-ph gr-qc hep-th
http://creativecommons.org/licenses/publicdomain/
It was pointed out some time ago that there can be two variations in which the divergences of a quantum field theory can be tamed using the ideas presented by Lee and Wick. In one variation the Lee-Wick partners of the normal fields live in an indefinite metric Hilbert space but have positive energy and in the other ...
[ { "created": "Tue, 2 Aug 2011 05:21:30 GMT", "version": "v1" }, { "created": "Wed, 3 Aug 2011 11:37:30 GMT", "version": "v2" } ]
2011-11-10
[ [ "Bhattacharya", "Kaushik", "" ], [ "Das", "Suratna", "" ] ]
It was pointed out some time ago that there can be two variations in which the divergences of a quantum field theory can be tamed using the ideas presented by Lee and Wick. In one variation the Lee-Wick partners of the normal fields live in an indefinite metric Hilbert space but have positive energy and in the other va...
2405.03265
Yuepeng Guan
Yuepeng Guan, Shinya Matsuzaki
Ladder top-quark condensation imprints in supercooled electroweak phase transition
18 pages, 13 figures
null
null
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
The electroweak (EW) phase transition in the early Universe might be supercooled due to the presence of the classical scale invariance involving Beyond the Standard Model (BSM) sectors and the supercooling could persist down till a later epoch around which the QCD chiral phase transition is supposed to take place. Si...
[ { "created": "Mon, 6 May 2024 08:36:57 GMT", "version": "v1" } ]
2024-05-07
[ [ "Guan", "Yuepeng", "" ], [ "Matsuzaki", "Shinya", "" ] ]
The electroweak (EW) phase transition in the early Universe might be supercooled due to the presence of the classical scale invariance involving Beyond the Standard Model (BSM) sectors and the supercooling could persist down till a later epoch around which the QCD chiral phase transition is supposed to take place. Sinc...
1108.0887
Van Mayes
James A. Maxin, Van E. Mayes, and D.V. Nanopoulos
Proton Stability and Dark Matter in a Realistic String MSSM
Expanded discussion of Z' boson phenomenology. Accepted for publication to Physical Review D. arXiv admin note: text overlap with arXiv:1103.6035
Phys. Rev. D 84: 106009, 2011
10.1103/PhysRevD.84.106009
ACT-11-11; MIFPA-11-35
hep-ph astro-ph.CO hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We demonstrate the existence of an extra nonanomalous U(1) gauge symmetry in a three-generation Pati-Salam model constructed with intersecting D6-branes in Type IIA string theory on a T^6/(Z_2 \times Z_2) orientifold. This extra U(1) forbids all dimension-4, 5, and 6 operators which mediate proton decay in the MSSM. ...
[ { "created": "Wed, 3 Aug 2011 16:35:19 GMT", "version": "v1" }, { "created": "Sat, 22 Oct 2011 00:28:49 GMT", "version": "v2" } ]
2013-02-26
[ [ "Maxin", "James A.", "" ], [ "Mayes", "Van E.", "" ], [ "Nanopoulos", "D. V.", "" ] ]
We demonstrate the existence of an extra nonanomalous U(1) gauge symmetry in a three-generation Pati-Salam model constructed with intersecting D6-branes in Type IIA string theory on a T^6/(Z_2 \times Z_2) orientifold. This extra U(1) forbids all dimension-4, 5, and 6 operators which mediate proton decay in the MSSM. Mo...
hep-ph/0505092
Alexander V. Kuznetsov
A.V. Kuznetsov, N.V. Mikheev (Yaroslavl State (P.G. Demidov) University, Russia), G.G. Raffelt (Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut), Germany), L.A. Vassilevskaya (Yaroslavl State (P.G. Demidov) University, Russia)
Neutrino dispersion in external magnetic fields
9 pages, 1 figure, revtex. Version to appear in Phys. Rev. D (presentation improved, reference list revised, numerical error in Eq.(41) corrected, conclusions unchanged)
Phys.Rev.D73:023001,2006; Erratum-ibid.D73:029903,2006
10.1103/PhysRevD.73.023001 10.1103/PhysRevD.73.029903
YARU-HE-05/02; MPP-2005-43
hep-ph
null
We calculate the neutrino self-energy operator Sigma (p) in the presence of a magnetic field B. In particular, we consider the weak-field limit e B << m_\ell^2, where m_\ell is the charged-lepton mass corresponding to the neutrino flavor \nu_\ell, and we consider a "moderate field" m_\ell^2 << e B << m_W^2. Our resul...
[ { "created": "Wed, 11 May 2005 12:13:01 GMT", "version": "v1" }, { "created": "Tue, 13 Dec 2005 11:14:09 GMT", "version": "v2" } ]
2014-11-18
[ [ "Kuznetsov", "A. V.", "", "Yaroslavl State" ], [ "Mikheev", "N. V.", "", "Yaroslavl State" ], [ "Raffelt", "G. G.", "", "Max-Planck-Institut fuer Physik" ], [ "Vassilevskaya", "L. A.", "", "Yaroslavl State" ] ]
We calculate the neutrino self-energy operator Sigma (p) in the presence of a magnetic field B. In particular, we consider the weak-field limit e B << m_\ell^2, where m_\ell is the charged-lepton mass corresponding to the neutrino flavor \nu_\ell, and we consider a "moderate field" m_\ell^2 << e B << m_W^2. Our results...
hep-ph/0611218
Ben Gripaios
Ben Gripaios
Neutrinos in a Sterile Throat
27 pages, 1 figure. Sign error corrected
Nucl.Phys.B768:157-176,2007
10.1016/j.nuclphysb.2007.01.019
OUTP-0619P
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider field-theoretic models of a warped extra dimension with multiple throats, in which fermions that are singlets of the Standard Model gauge group propagate in a separate throat from the Standard Model fields, which we call the sterile throat. The singlets mix with Standard Model fields via interactions lo...
[ { "created": "Thu, 16 Nov 2006 14:31:52 GMT", "version": "v1" }, { "created": "Wed, 16 Dec 2009 15:56:13 GMT", "version": "v2" } ]
2009-12-16
[ [ "Gripaios", "Ben", "" ] ]
We consider field-theoretic models of a warped extra dimension with multiple throats, in which fermions that are singlets of the Standard Model gauge group propagate in a separate throat from the Standard Model fields, which we call the sterile throat. The singlets mix with Standard Model fields via interactions locali...
hep-ph/9707432
Deog Ki Hong
Deog Ki Hong (Pusan University)
Magnetic Catalysis in Quantum Electrodynamics
9 pages, RevTeX, 2 Postscript figures, uses epsf.sty
Phys.Rev. D57 (1998) 3759-3762
10.1103/PhysRevD.57.3759
SNUTP 97-053
hep-ph hep-th
null
We derive the (Wilsonian) low energy effective Lagrangian for Quantum Electrodynamics under external constant magnetic field by integrating out all electrons except those in the lowest Landau level. We find the one-loop effective Lagrangian contains a marginal four-Fermi interaction with anomalous dimension, ${(\ln2)...
[ { "created": "Wed, 23 Jul 1997 15:31:26 GMT", "version": "v1" } ]
2009-10-30
[ [ "Hong", "Deog Ki", "", "Pusan University" ] ]
We derive the (Wilsonian) low energy effective Lagrangian for Quantum Electrodynamics under external constant magnetic field by integrating out all electrons except those in the lowest Landau level. We find the one-loop effective Lagrangian contains a marginal four-Fermi interaction with anomalous dimension, ${(\ln2)^2...
2204.06225
Jason Aebischer
Jason Aebischer and Benjam\'in Grinstein
The $B_c$ decay rate in the Standard Model
5 pages, Contribution to the proceedings of the 30th International Symposium on Lepton Photon Interactions at High Energies, hosted by the University of Manchester, 10-14 January 2022
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The Standard Model decay rate of the $B_c$ meson is discussed together with a novel approach based on the usage of experimental data in combination with an operator product expansion. In the new method differences of $B,\,D$ and $B_c$ meson decay rates are considered, for which the free-quark contributions drop out, ...
[ { "created": "Wed, 13 Apr 2022 07:57:47 GMT", "version": "v1" } ]
2022-04-14
[ [ "Aebischer", "Jason", "" ], [ "Grinstein", "Benjamín", "" ] ]
The Standard Model decay rate of the $B_c$ meson is discussed together with a novel approach based on the usage of experimental data in combination with an operator product expansion. In the new method differences of $B,\,D$ and $B_c$ meson decay rates are considered, for which the free-quark contributions drop out, le...
2105.06261
Chen Gang
Hong-ge Xu, Zhi-Lei She, Dai-Mei Zhou, Liang Zheng, Xiao-Lin Kang, Gang Chen, Ben-Hao Sa
Investigation of exotic state X(3872) in $pp$ collisions at $\sqrt{s}=$7 and 13 TeV
6 pages, 3 figures
null
null
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
We have used the dynamically constrained phase space coalescence model to study the production of the exotic state $X(3872)$ based on the hadronic final states generated by the parton and hadron cascade model (PACIAE) with $|y|<1$ and $p_T < 15.5$ GeV/c in $pp$ collisions at $\sqrt{s}=7$ and 13 TeV, respectively. Her...
[ { "created": "Thu, 13 May 2021 13:07:04 GMT", "version": "v1" }, { "created": "Fri, 18 Jun 2021 04:10:00 GMT", "version": "v2" }, { "created": "Thu, 28 Oct 2021 12:47:23 GMT", "version": "v3" } ]
2021-10-29
[ [ "Xu", "Hong-ge", "" ], [ "She", "Zhi-Lei", "" ], [ "Zhou", "Dai-Mei", "" ], [ "Zheng", "Liang", "" ], [ "Kang", "Xiao-Lin", "" ], [ "Chen", "Gang", "" ], [ "Sa", "Ben-Hao", "" ] ]
We have used the dynamically constrained phase space coalescence model to study the production of the exotic state $X(3872)$ based on the hadronic final states generated by the parton and hadron cascade model (PACIAE) with $|y|<1$ and $p_T < 15.5$ GeV/c in $pp$ collisions at $\sqrt{s}=7$ and 13 TeV, respectively. Here ...
1509.02530
Pran Nath
Bryan Kaufman, Pran Nath, Brent D Nelson, Andrew Spisak
Light Stops and Observation of Supersymmetry at LHC RUN-II
21pages, 8 figures. Version published in PRD
null
10.1103/PhysRevD.92.095021
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Light stops consistent with the Higgs boson mass of $\sim126\,{\rm GeV}$ are investigated within the framework of minimal supergravity. It is shown that models with light stops which are also consistent with the thermal relic density constraints require stop coannihilation with the neutralino LSP. The analysis shows ...
[ { "created": "Tue, 8 Sep 2015 20:08:59 GMT", "version": "v1" }, { "created": "Wed, 18 May 2016 22:08:02 GMT", "version": "v2" } ]
2016-05-20
[ [ "Kaufman", "Bryan", "" ], [ "Nath", "Pran", "" ], [ "Nelson", "Brent D", "" ], [ "Spisak", "Andrew", "" ] ]
Light stops consistent with the Higgs boson mass of $\sim126\,{\rm GeV}$ are investigated within the framework of minimal supergravity. It is shown that models with light stops which are also consistent with the thermal relic density constraints require stop coannihilation with the neutralino LSP. The analysis shows th...
1612.07123
Wolfgang Schweiger
S. Kofler and W. Schweiger
A perturbative QCD approach to $\pi^- p \rightarrow D^- \Lambda_c^+$
Talk presented by W. Schweiger at "Light Cone 2016", Lisbon, Sep. 5-8, 2016
null
10.1007/s00601-016-1197-7
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We employ the generalized parton picture to analyze the reaction $\pi^- p \rightarrow D^- \Lambda_c^+$. Thereby it is assumed that the process amplitude factorizes into one for the perturbatively calculable subprocess $\bar{u}\ u\rightarrow \bar{c}\ c$ and hadronic matrix elements that can be parameterized in terms o...
[ { "created": "Wed, 21 Dec 2016 14:07:48 GMT", "version": "v1" } ]
2017-03-08
[ [ "Kofler", "S.", "" ], [ "Schweiger", "W.", "" ] ]
We employ the generalized parton picture to analyze the reaction $\pi^- p \rightarrow D^- \Lambda_c^+$. Thereby it is assumed that the process amplitude factorizes into one for the perturbatively calculable subprocess $\bar{u}\ u\rightarrow \bar{c}\ c$ and hadronic matrix elements that can be parameterized in terms of ...
2203.11462
Yisheng Song
Yisheng Song
Co-positivity of tensors and bounded from below conditions of CP conserving two-Higgs-doublet potential
17 pages
International Journal of Modern Physics A 38:31 (2023), 2350164
10.1142/S0217751X23501646
null
hep-ph math-ph math.MP math.OC
http://creativecommons.org/licenses/by/4.0/
In this paper, the analytic sufficient and necessary conditions are obtained for the CP conserving two-Higgs-doublet potential to be bounded from below by using the co-positivity of tensors. This is achieved by treating the potential as a quartic homogeneous polynomial about the moduli of the two Higgs doublet fields...
[ { "created": "Tue, 22 Mar 2022 05:01:18 GMT", "version": "v1" }, { "created": "Fri, 30 Dec 2022 10:55:58 GMT", "version": "v2" }, { "created": "Sun, 8 Jan 2023 00:22:40 GMT", "version": "v3" }, { "created": "Sat, 4 Feb 2023 04:27:14 GMT", "version": "v4" }, { "cre...
2024-01-29
[ [ "Song", "Yisheng", "" ] ]
In this paper, the analytic sufficient and necessary conditions are obtained for the CP conserving two-Higgs-doublet potential to be bounded from below by using the co-positivity of tensors. This is achieved by treating the potential as a quartic homogeneous polynomial about the moduli of the two Higgs doublet fields, ...
1602.00590
Melissa van Beekveld
Melissa van Beekveld, Wim Beenakker, Sascha Caron and Roberto Ruiz de Austri
The case for 100 GeV bino dark matter: A dedicated LHC tri-lepton search
Published in JHEP
null
10.1007/JHEP04(2016)154
null
hep-ph astro-ph.HE hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Global fit studies performed in the pMSSM and the photon excess signal originating from the Galactic Center seem to suggest compressed electroweak supersymmetric spectra with a $\sim$100 GeV bino-like dark matter particle. We find that these scenarios are not probed by traditional electroweak supersymmetry searches a...
[ { "created": "Mon, 1 Feb 2016 16:47:11 GMT", "version": "v1" }, { "created": "Mon, 2 May 2016 08:12:22 GMT", "version": "v2" } ]
2016-05-03
[ [ "van Beekveld", "Melissa", "" ], [ "Beenakker", "Wim", "" ], [ "Caron", "Sascha", "" ], [ "de Austri", "Roberto Ruiz", "" ] ]
Global fit studies performed in the pMSSM and the photon excess signal originating from the Galactic Center seem to suggest compressed electroweak supersymmetric spectra with a $\sim$100 GeV bino-like dark matter particle. We find that these scenarios are not probed by traditional electroweak supersymmetry searches at ...
1904.11990
Christopher Verhaaren
Zackaria Chacko, Can Kilic, Saereh Najjari, Christopher B. Verhaaren
Collider Signals of the Mirror Twin Higgs through the Hypercharge Portal
28 pages, 9 figures; Updated to published version
Phys. Rev. D 100, 035037 (2019)
10.1103/PhysRevD.100.035037
MITP/18-113, UTTG-25-18
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider the collider signals arising from kinetic mixing between the hypercharge gauge boson of the Standard Model and its twin counterpart in the Mirror Twin Higgs model, in the framework in which the twin photon is massive. Through the mixing, the Standard Model fermions acquire charges under the mirror photon ...
[ { "created": "Fri, 26 Apr 2019 18:00:02 GMT", "version": "v1" }, { "created": "Fri, 30 Aug 2019 16:26:36 GMT", "version": "v2" } ]
2019-09-02
[ [ "Chacko", "Zackaria", "" ], [ "Kilic", "Can", "" ], [ "Najjari", "Saereh", "" ], [ "Verhaaren", "Christopher B.", "" ] ]
We consider the collider signals arising from kinetic mixing between the hypercharge gauge boson of the Standard Model and its twin counterpart in the Mirror Twin Higgs model, in the framework in which the twin photon is massive. Through the mixing, the Standard Model fermions acquire charges under the mirror photon an...
hep-ph/9906404
Karapet A. Ispiryan
R. O. Avakian, L. A. Gevorgian, K. A. Ispirian, R. K. Ispirian
Stimulated Radiation of Particles in Crystallic Undulators
8 pages, Latex
null
null
YerPhI-99-11
hep-ph
null
It is investigated the stimulated radiation which arises when the density and energy of the beam of relativistic particles channeled in microscopic crystallic undulators (CU) obtained by the application of transverse ultrasonic (US) oscillations to single crystals, exceed certain values. For positron beams expected a...
[ { "created": "Thu, 17 Jun 1999 06:14:34 GMT", "version": "v1" } ]
2007-05-23
[ [ "Avakian", "R. O.", "" ], [ "Gevorgian", "L. A.", "" ], [ "Ispirian", "K. A.", "" ], [ "Ispirian", "R. K.", "" ] ]
It is investigated the stimulated radiation which arises when the density and energy of the beam of relativistic particles channeled in microscopic crystallic undulators (CU) obtained by the application of transverse ultrasonic (US) oscillations to single crystals, exceed certain values. For positron beams expected at ...
0907.1979
Mauricio Bustamante
J. L. Bazo Alba (1), M. Bustamante (1), A. M. Gago (1), O. G. Miranda (2) ((1) Lima, Pont. U. Catolica, (2) Cinvestav, Ipn)
High energy astrophysical neutrino flux and modified dispersion relations
Accepted for publication in the Int. J. Mod. Phys. A -- Typo in online version of abstract corrected
Int.J.Mod.Phys.A24:5819-5829,2009
10.1142/S0217751X09047429
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Motivated by the interest in searches for violation of CPT invariance, we study its possible effects in the flavour ratios of high-energy neutrinos coming from cosmic accelerators. In particular, we focus on the effect of an energy independent new physics contribution to the neutrino flavour oscillation phase and exp...
[ { "created": "Sat, 11 Jul 2009 17:45:17 GMT", "version": "v1" }, { "created": "Mon, 13 Jul 2009 22:57:21 GMT", "version": "v2" } ]
2010-01-06
[ [ "Alba", "J. L. Bazo", "", "Lima, Pont. U. Catolica" ], [ "Bustamante", "M.", "", "Lima, Pont. U. Catolica" ], [ "Gago", "A. M.", "", "Lima, Pont. U. Catolica" ], [ "Miranda", "O. G.", "", "Cinvestav, Ipn" ] ]
Motivated by the interest in searches for violation of CPT invariance, we study its possible effects in the flavour ratios of high-energy neutrinos coming from cosmic accelerators. In particular, we focus on the effect of an energy independent new physics contribution to the neutrino flavour oscillation phase and explo...
1308.6779
Alejandro Celis
Alejandro Celis
Effects of a charged Higgs boson in $B \rightarrow D^{(*)} \tau \nu$ decays
6 pages, 1 figure and 2 tables; 2013 EPS Conference Proceedings. v2: minor changes and references added
null
null
IFIC/13-59, FTUV/13-0830
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this talk I consider the current status of $B \rightarrow D^{(*)} \tau \nu$ decays in the context of two-Higgs-doublet models. The BaBar collaboration has reported an excess in semileptonic $b \rightarrow c \tau \nu$ transitions that has gathered recent interest as a possible signature of new physics. The sensitiv...
[ { "created": "Fri, 30 Aug 2013 15:51:23 GMT", "version": "v1" }, { "created": "Wed, 25 Sep 2013 18:40:34 GMT", "version": "v2" } ]
2013-09-26
[ [ "Celis", "Alejandro", "" ] ]
In this talk I consider the current status of $B \rightarrow D^{(*)} \tau \nu$ decays in the context of two-Higgs-doublet models. The BaBar collaboration has reported an excess in semileptonic $b \rightarrow c \tau \nu$ transitions that has gathered recent interest as a possible signature of new physics. The sensitivit...
0810.3315
Alexander Bakulev
Alexander P. Bakulev
Thresholds in FAPT: Euclid vs Minkowski
14 pages, 2 tables, 10 figures. Invited talk at the 15th International Seminar on High Energy Physics "QUARKS-2008", Sergiev Posad, Russia, 23--29 May, 2008. Referrences are supplemented with HEP-Arxiv numbers
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We give a short introduction to the Analytic Perturbation Theory (APT) in QCD, describe its problems and suggest as a tool for their resolution the Fractional APT (FAPT). We also describe shortly how to treat heavy-quark thresholds in FAPT. As an applications of this technique we discuss (i) the pion form factor calc...
[ { "created": "Sat, 18 Oct 2008 13:24:54 GMT", "version": "v1" }, { "created": "Tue, 21 Oct 2008 16:04:59 GMT", "version": "v2" } ]
2008-10-21
[ [ "Bakulev", "Alexander P.", "" ] ]
We give a short introduction to the Analytic Perturbation Theory (APT) in QCD, describe its problems and suggest as a tool for their resolution the Fractional APT (FAPT). We also describe shortly how to treat heavy-quark thresholds in FAPT. As an applications of this technique we discuss (i) the pion form factor calcul...
1806.01876
Anirban Biswas
Anirban Biswas, Debasish Borah, Dibyendu Nanda
When Freeze-out Precedes Freeze-in: Sub-TeV Fermion Triplet Dark Matter with Radiative Neutrino Mass
29 pages, 10 figures, few minor changes in the text, version published in JCAP
JCAP09(2018)014
10.1088/1475-7516/2018/09/014
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We propose a minimal predictive scenario for dark matter and radiative neutrino mass where the relic abundance of dark matter is generated from a hybrid setup comprising of both thermal freeze-out as well as non-thermal freeze-in mechanisms. Considering three copies of fermion triplets and one scalar doublet, odd und...
[ { "created": "Tue, 5 Jun 2018 18:13:47 GMT", "version": "v1" }, { "created": "Mon, 10 Sep 2018 15:49:19 GMT", "version": "v2" } ]
2018-09-11
[ [ "Biswas", "Anirban", "" ], [ "Borah", "Debasish", "" ], [ "Nanda", "Dibyendu", "" ] ]
We propose a minimal predictive scenario for dark matter and radiative neutrino mass where the relic abundance of dark matter is generated from a hybrid setup comprising of both thermal freeze-out as well as non-thermal freeze-in mechanisms. Considering three copies of fermion triplets and one scalar doublet, odd under...
hep-ph/0110155
Ansgar Denner
Ansgar Denner
Electroweak Radiative Corrections at High Energies
6 pages, LaTeX, JHEP style, talk given at the International Europhysics Conference on High Energy Physics, Budapest, Hungary, July 12-18, 2001
null
null
null
hep-ph
null
For energies far above the electroweak scale, large electroweak radiative corrections occur that grow logarithmically with energy and can easily reach several tens of per cent in the TeV range. Recent work on these corrections is reviewed.
[ { "created": "Thu, 11 Oct 2001 16:32:27 GMT", "version": "v1" } ]
2007-05-23
[ [ "Denner", "Ansgar", "" ] ]
For energies far above the electroweak scale, large electroweak radiative corrections occur that grow logarithmically with energy and can easily reach several tens of per cent in the TeV range. Recent work on these corrections is reviewed.
1903.06884
Manjit Kaur Dr.
Aayushi Singla, M. Kaur
Multiplicity moments of shifted Gompertz distribution in $e^{+}e^{-}$, $p\bar{p}$ and $pp$ collisions at high energies
10 pages, 11 figures, 3 tables
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In continuation of our earlier work, in which we analysed the charged particle multiplicities in leptonic and hadronic interactions at different center of mass energies in full phase space as well as in restricted phase space with the shifted Gompertz distribution, a detailed analysis of the normalized and factorial ...
[ { "created": "Sat, 16 Mar 2019 06:02:24 GMT", "version": "v1" }, { "created": "Wed, 11 Sep 2019 10:46:11 GMT", "version": "v2" } ]
2019-09-12
[ [ "Singla", "Aayushi", "" ], [ "Kaur", "M.", "" ] ]
In continuation of our earlier work, in which we analysed the charged particle multiplicities in leptonic and hadronic interactions at different center of mass energies in full phase space as well as in restricted phase space with the shifted Gompertz distribution, a detailed analysis of the normalized and factorial mo...
1812.06692
Mattia Dalla Brida
Mattia Dalla Brida (on behalf of the ALPHA Collaboration)
Precision Determination of $\alpha_s$ from Lattice QCD
14 pages, 4 figures. Contribution from the "Selected Papers from the 7th International Conference on New Frontiers in Physics (ICNFP 2018)"
Universe 2018, 4(12), 148
10.3390/universe4120148
null
hep-ph hep-lat
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present an overview of the recent lattice determination of the QCD coupling $\alpha_s$ by the ALPHA Collaboration. The computation is based on the non-perturbative determination of the $\Lambda$-parameter of $N_{\rm f}=3$ QCD, and the perturbative matching of the $N_{\rm f}=3$ and $N_{\rm f}=5$ theories. The final...
[ { "created": "Mon, 17 Dec 2018 10:56:57 GMT", "version": "v1" } ]
2018-12-18
[ [ "Brida", "Mattia Dalla", "", "on behalf of the ALPHA Collaboration" ] ]
We present an overview of the recent lattice determination of the QCD coupling $\alpha_s$ by the ALPHA Collaboration. The computation is based on the non-perturbative determination of the $\Lambda$-parameter of $N_{\rm f}=3$ QCD, and the perturbative matching of the $N_{\rm f}=3$ and $N_{\rm f}=5$ theories. The final r...
2406.03331
Henrique Brito C\^amara
J. R. Rocha, H. B. C\^amara, R. G. Felipe, F. R. Joaquim
Minimal U(1) two-Higgs-doublet models for quark and lepton flavour
32 LaTeX pages; 7 figures
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In the context of the 2HDM, and assuming that neutrinos acquire masses via the Weinberg operator, we perform a systematic analysis to determine the minimal quark and lepton flavour patterns, compatible with masses, mixing and CP violation data, realisable by Abelian symmetries. We determine four minimal models for qu...
[ { "created": "Wed, 5 Jun 2024 14:45:00 GMT", "version": "v1" } ]
2024-06-06
[ [ "Rocha", "J. R.", "" ], [ "Câmara", "H. B.", "" ], [ "Felipe", "R. G.", "" ], [ "Joaquim", "F. R.", "" ] ]
In the context of the 2HDM, and assuming that neutrinos acquire masses via the Weinberg operator, we perform a systematic analysis to determine the minimal quark and lepton flavour patterns, compatible with masses, mixing and CP violation data, realisable by Abelian symmetries. We determine four minimal models for quar...
0908.0395
Tatsuo Kobayashi
Kang-Sin Choi, Tatsuo Kobayashi, Ryosuke Maruyama, Masaki Murata, Yuichiro Nakai, Hiroshi Ohki, Manabu Sakai
E6,7,8 Magnetized Extra Dimensional Models
17 pages, 1 figure
Eur.Phys.J.C67:273-282,2010
10.1140/epjc/s10052-010-1275-9
KUNS-2223, YITP-09-50
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study 10D super Yang-Mills theory with the gauge groups $E_6$, $E_7$ and $E_8$. We consider the torus/orbifold compacfitication with magnetic fluxes and Wilson lines. They lead to 4D interesting models with three families of quarks and leptons, whose profiles in extra dimensions are quasi-localized because of magn...
[ { "created": "Tue, 4 Aug 2009 08:24:58 GMT", "version": "v1" }, { "created": "Thu, 25 Feb 2010 02:23:50 GMT", "version": "v2" } ]
2014-11-20
[ [ "Choi", "Kang-Sin", "" ], [ "Kobayashi", "Tatsuo", "" ], [ "Maruyama", "Ryosuke", "" ], [ "Murata", "Masaki", "" ], [ "Nakai", "Yuichiro", "" ], [ "Ohki", "Hiroshi", "" ], [ "Sakai", "Manabu", "" ] ]
We study 10D super Yang-Mills theory with the gauge groups $E_6$, $E_7$ and $E_8$. We consider the torus/orbifold compacfitication with magnetic fluxes and Wilson lines. They lead to 4D interesting models with three families of quarks and leptons, whose profiles in extra dimensions are quasi-localized because of magnet...
1506.02148
Farvah Mahmoudi
A. Arbey, M. Battaglia, F. Mahmoudi
Monojet Searches for MSSM Simplified Models
9 pages, 8 figures
Phys. Rev. D 94, 055015 (2016)
10.1103/PhysRevD.94.055015
CERN-PH-TH/2015-133
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We explore the implications of monojet searches at hadron colliders in the minimal supersymmetric extension of the Standard Model (MSSM). To quantify the impact of monojet searches, we consider simplified MSSM scenarios with neutralino dark matter. The monojet results of the LHC Run 1 are reinterpreted in the context...
[ { "created": "Sat, 6 Jun 2015 13:02:21 GMT", "version": "v1" }, { "created": "Mon, 19 Sep 2016 20:00:48 GMT", "version": "v2" } ]
2016-09-21
[ [ "Arbey", "A.", "" ], [ "Battaglia", "M.", "" ], [ "Mahmoudi", "F.", "" ] ]
We explore the implications of monojet searches at hadron colliders in the minimal supersymmetric extension of the Standard Model (MSSM). To quantify the impact of monojet searches, we consider simplified MSSM scenarios with neutralino dark matter. The monojet results of the LHC Run 1 are reinterpreted in the context o...
hep-ph/9812475
Ferruccio Feruglio
Guido Altarelli and Ferruccio Feruglio
A Simple Grand Unification View of Neutrino Mixing and Fermion Mass Matrices
12 pages, LATEX, no figures; discussion added on the just-so solution; version to appear on Phys. Lett. B
Phys.Lett.B451:388-396,1999
10.1016/S0370-2693(99)00208-7
CERN-TH/98-410, DFPD-98/TH/52
hep-ph
null
Assuming three light neutrinos and the see-saw mechanism we present a semiquantitative model of fermion masses based on (SUSY) SU(5) and abelian horizontal charges. A good description of the observed pattern of quark and lepton masses is obtained. For neutrinos we naturally obtain widely split masses and large atmosp...
[ { "created": "Tue, 22 Dec 1998 14:32:47 GMT", "version": "v1" }, { "created": "Mon, 8 Mar 1999 09:20:27 GMT", "version": "v2" } ]
2008-11-26
[ [ "Altarelli", "Guido", "" ], [ "Feruglio", "Ferruccio", "" ] ]
Assuming three light neutrinos and the see-saw mechanism we present a semiquantitative model of fermion masses based on (SUSY) SU(5) and abelian horizontal charges. A good description of the observed pattern of quark and lepton masses is obtained. For neutrinos we naturally obtain widely split masses and large atmosphe...
1504.05187
Adam Coogan
Adam Coogan, Stefano Profumo, William Shepherd
Monochromatic Gamma Rays from Dark Matter Annihilation to Leptons
21 pages plus appendices, 7 figures. v2: added experimental constraints from CMB and Fermi, expanded and reorganized discussion throughout. Accepted by JHEP
JHEP 1508 (2015) 074
10.1007/JHEP08(2015)074
SCIPP 15/06
hep-ph astro-ph.HE
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the relation between the annihilation of dark matter (DM) particles into lepton pairs and into 2-body final states including one or two photons. We parametrize the DM interactions with leptons in terms of contact interactions, and calculate the loop-level annihilation into monochromatic gamma rays, spe...
[ { "created": "Mon, 20 Apr 2015 20:00:39 GMT", "version": "v1" }, { "created": "Mon, 20 Jul 2015 18:58:07 GMT", "version": "v2" } ]
2015-09-03
[ [ "Coogan", "Adam", "" ], [ "Profumo", "Stefano", "" ], [ "Shepherd", "William", "" ] ]
We investigate the relation between the annihilation of dark matter (DM) particles into lepton pairs and into 2-body final states including one or two photons. We parametrize the DM interactions with leptons in terms of contact interactions, and calculate the loop-level annihilation into monochromatic gamma rays, speci...