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1402.1186
G.R. Boroun
G.R.Boroun
Nonlinear correction to the longitudinal structure function at small x
4 pages, 1 figures. arXiv admin note: substantial text overlap with arXiv:1402.0864, arXiv:1402.0752
Eur. Phys. J. A 43, (2010)335
10.1140/epja/i2010-10919-9
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We computed the longitudinal proton structure function $F_{L}$, using the nonlinear Dokshitzer-Gribov-Lipatov-Altarelli-parisi (NLDGLAP) evolution equation approach at small $x$. For the gluon distribution, the nonlinear effects are related to the longitudinal structure function. As, the very small $x$ behavior of th...
[ { "created": "Tue, 4 Feb 2014 15:19:15 GMT", "version": "v1" } ]
2014-02-07
[ [ "Boroun", "G. R.", "" ] ]
We computed the longitudinal proton structure function $F_{L}$, using the nonlinear Dokshitzer-Gribov-Lipatov-Altarelli-parisi (NLDGLAP) evolution equation approach at small $x$. For the gluon distribution, the nonlinear effects are related to the longitudinal structure function. As, the very small $x$ behavior of the ...
hep-ph/0407193
Adam Bzdak
Adam Bzdak
Central inclusive dijets production by double pomeron exchange. Comparison with the CDF results
8 pages, 2 figures
Phys.Lett. B608 (2005) 64-68
10.1016/j.physletb.2005.01.004
null
hep-ph
null
Using the Landshoff-Nachtmann model of the pomeron, rapidity and transverse momentum distributions of gluon jets produced by double pomeron exchange in pp collisions are calculated. The comparison with the CDF Run I results on the central inclusive dijets production cross sections is performed. We find the model to g...
[ { "created": "Fri, 16 Jul 2004 17:38:01 GMT", "version": "v1" }, { "created": "Wed, 5 Jan 2005 16:28:19 GMT", "version": "v2" } ]
2009-11-10
[ [ "Bzdak", "Adam", "" ] ]
Using the Landshoff-Nachtmann model of the pomeron, rapidity and transverse momentum distributions of gluon jets produced by double pomeron exchange in pp collisions are calculated. The comparison with the CDF Run I results on the central inclusive dijets production cross sections is performed. We find the model to giv...
2210.05106
Shi Pu
Shuo Lin, Ren-Jie Wang, JIan-Fei Wang, Hao-Jie Xu, Shi Pu, Qun Wang
Photoproduction of $e^{+}e^{-}$ in peripheral isobar collisions
17 pages, 6 figures
null
10.1103/PhysRevD.107.054004
null
hep-ph nucl-th
http://creativecommons.org/licenses/by/4.0/
We investigate the photoproduction of di-electrons in peripheral collisions of $_{44}^{96}\textrm{Ru}+_{44}^{96}\textrm{Ru}$ and $_{40}^{96}\textrm{Zr}+_{40}^{96}\textrm{Zr}$ at 200 GeV. With the charge and mass density distributions given by the calculation of the density functional theory, we calculate the spectra ...
[ { "created": "Tue, 11 Oct 2022 02:50:01 GMT", "version": "v1" } ]
2023-03-15
[ [ "Lin", "Shuo", "" ], [ "Wang", "Ren-Jie", "" ], [ "Wang", "JIan-Fei", "" ], [ "Xu", "Hao-Jie", "" ], [ "Pu", "Shi", "" ], [ "Wang", "Qun", "" ] ]
We investigate the photoproduction of di-electrons in peripheral collisions of $_{44}^{96}\textrm{Ru}+_{44}^{96}\textrm{Ru}$ and $_{40}^{96}\textrm{Zr}+_{40}^{96}\textrm{Zr}$ at 200 GeV. With the charge and mass density distributions given by the calculation of the density functional theory, we calculate the spectra of...
hep-ph/9605361
Thomas G. Rizzo
Thomas G. Rizzo
Anomalous Chromoelectric and Chromomagnetic Moments of the Top Quark at the NLC
8 pages plus figures, compressed PS file
null
null
SLAC-PUB-7154
hep-ph
null
The production of top quark pairs in association with a hard gluon in $e^+e^-$ collisions at the NLC provides an opportunity to probe for anomalous $t\bar tg$ couplings, \eg, the chromoelectric and chromomagnetic moments of the top. We demonstrate that an examination of the energy spectrum of the additional gluon jet...
[ { "created": "Mon, 20 May 1996 23:30:54 GMT", "version": "v1" } ]
2007-05-23
[ [ "Rizzo", "Thomas G.", "" ] ]
The production of top quark pairs in association with a hard gluon in $e^+e^-$ collisions at the NLC provides an opportunity to probe for anomalous $t\bar tg$ couplings, \eg, the chromoelectric and chromomagnetic moments of the top. We demonstrate that an examination of the energy spectrum of the additional gluon jet c...
hep-ph/0509156
Kacper Zalewski
Kacper Zalewski
Pitfalls of the theory of Bose-Einstein correlations in multiple particle production
8 pages LateX, no figures, report at the QCD'05 Conference Montpellier July 2005
null
null
null
hep-ph
null
Some basic difficulties and ambiguities on the way from the measured momentum distributions to the inferred properties of the interaction regions are reviewed and discussed.
[ { "created": "Thu, 15 Sep 2005 11:14:58 GMT", "version": "v1" } ]
2007-05-23
[ [ "Zalewski", "Kacper", "" ] ]
Some basic difficulties and ambiguities on the way from the measured momentum distributions to the inferred properties of the interaction regions are reviewed and discussed.
hep-ph/0002173
Rahul Sinha
D. London, N. Sinha, R. Sinha
Is it possible to Measure the Weak Phase of a Penguin Diagram?
4 pages, latex, no figures, talk given by R. Sinha at the 3rd International Conference on B Physics and CP Violation, Taipei, Taiwan, December 3-7, 1999, to appear in the Proceedings
null
10.1142/9789812791870_0017
IMSc/00/02/05, UdeM-GPP-TH-00-66
hep-ph
null
The $b\to d$ penguin amplitude receives contributions from internal $u$, $c$ and $t$-quarks. We show that it is impossible to measure the weak phase of any of these penguin contributions without theoretical input. However, a single assumption involving the hadronic parameters makes it possible to obtain the weak phas...
[ { "created": "Wed, 16 Feb 2000 11:46:37 GMT", "version": "v1" } ]
2016-11-23
[ [ "London", "D.", "" ], [ "Sinha", "N.", "" ], [ "Sinha", "R.", "" ] ]
The $b\to d$ penguin amplitude receives contributions from internal $u$, $c$ and $t$-quarks. We show that it is impossible to measure the weak phase of any of these penguin contributions without theoretical input. However, a single assumption involving the hadronic parameters makes it possible to obtain the weak phase ...
0802.1328
Yeo-Yie Charng
Yeo-Yie Charng, Da-Shin Lee, Chung Ngoc Leung, and Kin-Wang Ng
Affleck-Dine Baryogenesis, Split Supersymmetry, and Inflation
version accepted for publication in PRD
Phys.Rev.D80:063519,2009
10.1103/PhysRevD.80.063519
null
hep-ph astro-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
It is shown that, in the context of split supersymmetry, a simple model with a single complex scalar field can produce chaotic inflation and generate the observed amount of baryon asymmetry via the Affleck-Dine mechanism. While the inflaton quantum fluctuations give rise to curvature perturbation, we show that quantu...
[ { "created": "Sun, 10 Feb 2008 15:47:04 GMT", "version": "v1" }, { "created": "Tue, 27 Jan 2009 21:21:43 GMT", "version": "v2" }, { "created": "Tue, 14 Jul 2009 13:30:41 GMT", "version": "v3" } ]
2009-11-06
[ [ "Charng", "Yeo-Yie", "" ], [ "Lee", "Da-Shin", "" ], [ "Leung", "Chung Ngoc", "" ], [ "Ng", "Kin-Wang", "" ] ]
It is shown that, in the context of split supersymmetry, a simple model with a single complex scalar field can produce chaotic inflation and generate the observed amount of baryon asymmetry via the Affleck-Dine mechanism. While the inflaton quantum fluctuations give rise to curvature perturbation, we show that quantum ...
1008.0923
Dremin
I.M. Dremin
Polarization properties of the quark-gluon medium
6 p., talk at HSQCD2010, Gatchina
null
null
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Collective properties of the quark-gluon medium induced by its polarization are described by macroscopic QCD equations. The parton currents traversing it lead to emission of Cherenkov gluons, the wake effect and the transition radiation. Comparison with experimental data of RHIC reveals large value of the chromopermi...
[ { "created": "Thu, 5 Aug 2010 08:00:42 GMT", "version": "v1" } ]
2010-08-06
[ [ "Dremin", "I. M.", "" ] ]
Collective properties of the quark-gluon medium induced by its polarization are described by macroscopic QCD equations. The parton currents traversing it lead to emission of Cherenkov gluons, the wake effect and the transition radiation. Comparison with experimental data of RHIC reveals large value of the chromopermitt...
1405.4664
Shinya Fukasawa
Shinya Fukasawa
Search for Non-Standard Interactions by atmospheric neutrino
4 pages, 3 figures, Proceedings of Rencontres de Moriond, EW session, 2014
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the effects of neutral current Non-Standard Interactions in propagation on atmospheric neutrino experiments such as Super-Kamiokande and Hyper-Kamiokande. With the ansatz where the parameters which have strong constraints from other experiments are neglected, we show how these experiments put constrain...
[ { "created": "Mon, 19 May 2014 10:31:25 GMT", "version": "v1" } ]
2014-05-20
[ [ "Fukasawa", "Shinya", "" ] ]
We investigate the effects of neutral current Non-Standard Interactions in propagation on atmospheric neutrino experiments such as Super-Kamiokande and Hyper-Kamiokande. With the ansatz where the parameters which have strong constraints from other experiments are neglected, we show how these experiments put constraints...
hep-ph/9606332
Erwin Mirkes
Erwin Mirkes and Dieter Zeppenfeld
QCD Corrections to Jet Cross Sections in DIS
Invited talk given at the Zeuthen Workshop on Elementary Particle Theory, "QCD and QED in Higher Orders", Rheinsberg, Germany, 21-26 April 1996; presented by E. Mirkes. 6 pages, 4 figures. The complete paper, including figures, is also available via anonymous ftp at ftp://www-ttp.physik.uni-karlsruhe.de/ , or v...
Nucl.Phys.Proc.Suppl. 51C (1996) 273-280
10.1016/S0920-5632(96)90036-5
TTP96-24, MADPH-96-946
hep-ph
null
Next-to-leading order corrections to jet cross sections in deep inelastic scattering at HERA are studied. The predicted jet rates allow for a precise determination of $\alpha_s(\mu_R)$ at HERA over a wide range of $\mu_R$. We argue, that the ``natural'' renormalization and factorization scale is set by the average $k...
[ { "created": "Fri, 14 Jun 1996 08:40:55 GMT", "version": "v1" } ]
2015-06-25
[ [ "Mirkes", "Erwin", "" ], [ "Zeppenfeld", "Dieter", "" ] ]
Next-to-leading order corrections to jet cross sections in deep inelastic scattering at HERA are studied. The predicted jet rates allow for a precise determination of $\alpha_s(\mu_R)$ at HERA over a wide range of $\mu_R$. We argue, that the ``natural'' renormalization and factorization scale is set by the average $k_T...
2211.04390
Michael Fucilla
Michael Fucilla, Andrey V. Grabovsky, Lech Szymanowski, Emilie Li and Samuel Wallon
Diffractive di-hadron production at NLO within the shockwave formalism
6 pages, 2 figures. Presented by E. Li at Diffraction and Low-x 2022, Corigliano Calabro, Italy, September 24-30, 2022
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We compute the next-leading-order cross-sections for diffractive electro- or photoproduction of a pair of hadrons with large $p_T$, out of a nucleus or a nucleon. A hybrid factorization is used, mixing collinear and small-$x$ factorizations, more precisely shockwave formalism. We demonstrate the cancellation of diver...
[ { "created": "Tue, 8 Nov 2022 17:29:56 GMT", "version": "v1" } ]
2022-11-09
[ [ "Fucilla", "Michael", "" ], [ "Grabovsky", "Andrey V.", "" ], [ "Szymanowski", "Lech", "" ], [ "Li", "Emilie", "" ], [ "Wallon", "Samuel", "" ] ]
We compute the next-leading-order cross-sections for diffractive electro- or photoproduction of a pair of hadrons with large $p_T$, out of a nucleus or a nucleon. A hybrid factorization is used, mixing collinear and small-$x$ factorizations, more precisely shockwave formalism. We demonstrate the cancellation of diverge...
1311.6150
Michal Silarski
M. Silarski
Phenomenological studies of the low energy dynamics in the $ppK^+K^-$ system
Proceedings of the EFB22 conference (4 pages, 1 figure)
Few-Body Syst (2014) 55:57-60
10.1007/s00601-013-0744-8
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this article we review studies of the near threshold $pp \to ppK^+K^-$ reaction done with the COSY-11 and ANKE detectors. We discuss phenomenological studies of the $ppK^+K^-$ dynamics, in particular the recent investigations on the $K^+K^-$ final state interaction are presented.
[ { "created": "Sun, 24 Nov 2013 18:16:32 GMT", "version": "v1" } ]
2014-01-14
[ [ "Silarski", "M.", "" ] ]
In this article we review studies of the near threshold $pp \to ppK^+K^-$ reaction done with the COSY-11 and ANKE detectors. We discuss phenomenological studies of the $ppK^+K^-$ dynamics, in particular the recent investigations on the $K^+K^-$ final state interaction are presented.
1612.04612
Ilya F. Ginzburg
I. F. Ginzburg, M. Krawczyk
A simple criterium for CP conservation in the most general 2HDM
10 pages, 2 figures
Phys. Rev. D 96, 055030 (2017)
10.1103/PhysRevD.96.055030
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We find set of necessary and sufficient conditions for CP conservation in the most general 2HDM in terms of observable quantities. This set contains two relatively easily testable simple conditions instead of usually discussed three more complex ones.
[ { "created": "Wed, 14 Dec 2016 12:47:49 GMT", "version": "v1" } ]
2017-10-11
[ [ "Ginzburg", "I. F.", "" ], [ "Krawczyk", "M.", "" ] ]
We find set of necessary and sufficient conditions for CP conservation in the most general 2HDM in terms of observable quantities. This set contains two relatively easily testable simple conditions instead of usually discussed three more complex ones.
2106.09939
Ye Xing
Ye Xing, Yuekun Niu
The study of doubly charmed pentaquark $c c \bar qqq$ with the SU(3) symmetry
18 pages, 4 figures
null
10.1140/epjc/s10052-021-09730-4
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the masses and lifetimes of doubly charmed pentaquark $P_{cc\bar qqq}(q=u,d,s)$ primarily. The operation of masses carried out by the doubly heavy triquark-diquark model, whose results suggests the existence of stable states $cc\bar s ud$ with the parity $J^P=\frac{1}{2}^-$. The roughly calculation about lif...
[ { "created": "Fri, 18 Jun 2021 06:41:05 GMT", "version": "v1" } ]
2021-11-24
[ [ "Xing", "Ye", "" ], [ "Niu", "Yuekun", "" ] ]
We study the masses and lifetimes of doubly charmed pentaquark $P_{cc\bar qqq}(q=u,d,s)$ primarily. The operation of masses carried out by the doubly heavy triquark-diquark model, whose results suggests the existence of stable states $cc\bar s ud$ with the parity $J^P=\frac{1}{2}^-$. The roughly calculation about lifet...
hep-ph/9712417
Matthias Neubert
I. Caprini (Bucharest), L. Lellouch and M. Neubert (CERN)
Dispersive Bounds on the Shape of B -> D^(*) l nu Form Factors
32 pages, 6 figures
Nucl.Phys. B530 (1998) 153-181
10.1016/S0550-3213(98)00350-2
CERN-TH/97-91, CPT-97/P3480
hep-ph
null
Dispersive constraints on the shape of the form factors which describe the exclusive decays B -> D^(*) l nu are derived by fully exploiting spin symmetry in the ground-state doublet of heavy-light mesons. The analysis includes all twenty B^(*) -> D^(*) semileptonic form factors. Heavy-quark symmetry, with both short-...
[ { "created": "Wed, 17 Dec 1997 13:23:22 GMT", "version": "v1" } ]
2009-10-30
[ [ "Caprini", "I.", "", "Bucharest" ], [ "Lellouch", "L.", "", "CERN" ], [ "Neubert", "M.", "", "CERN" ] ]
Dispersive constraints on the shape of the form factors which describe the exclusive decays B -> D^(*) l nu are derived by fully exploiting spin symmetry in the ground-state doublet of heavy-light mesons. The analysis includes all twenty B^(*) -> D^(*) semileptonic form factors. Heavy-quark symmetry, with both short-di...
1801.03276
C. Q. Geng
C.Q. Geng, Y.K. Hsiao, Chia-Wei Liu and Tien-Hsueh Tsai
Anti-triplet charmed baryon decays with SU(3) Flavor Symmetry
12 pages, no figure, revised version accepted by PRD
Phys. Rev. D 97, 073006 (2018)
10.1103/PhysRevD.97.073006
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the decays of the anti-triplet charmed baryon state $(\Xi_c^0,\Xi_c^+,\Lambda_c^+)$ based on the $SU(3)$ flavor symmetry. In particular, after predicting ${\cal B}(\Xi_c^0\to \Xi^-\pi^+)=(15.7 \pm 0.7)\times 10^{-3}$ and ${\cal B}(\Xi_c^+\to\Xi^-\pi^+\pi^+)=(14.7\pm 8.4)\times 10^{-3}$, we extract that ${\ca...
[ { "created": "Wed, 10 Jan 2018 09:20:13 GMT", "version": "v1" }, { "created": "Sat, 7 Apr 2018 19:43:14 GMT", "version": "v2" } ]
2018-05-02
[ [ "Geng", "C. Q.", "" ], [ "Hsiao", "Y. K.", "" ], [ "Liu", "Chia-Wei", "" ], [ "Tsai", "Tien-Hsueh", "" ] ]
We study the decays of the anti-triplet charmed baryon state $(\Xi_c^0,\Xi_c^+,\Lambda_c^+)$ based on the $SU(3)$ flavor symmetry. In particular, after predicting ${\cal B}(\Xi_c^0\to \Xi^-\pi^+)=(15.7 \pm 0.7)\times 10^{-3}$ and ${\cal B}(\Xi_c^+\to\Xi^-\pi^+\pi^+)=(14.7\pm 8.4)\times 10^{-3}$, we extract that ${\cal ...
1711.10029
R. Sekhar Chivukula
R. Sekhar Chivukula
The Top Quark: Past, Present, and Future
Talk presented at the XXVIII International Symposium on Lepton Photon Interactions at High Energies, Sun Yat-Sen University, Guangzhou, China from Aug 7 to Aug 12, 2017. (Fixed references.)
null
null
null
hep-ph hep-ex hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this talk I discuss the widespread impact of the top quark on phenomena in elementary particle physics as codified through the Standard Model (SM), its important role in motivating the possiblity of physics beyond the Standard Model (BSM), and its use as a signal for detailed studies of the SM and searches for BSM...
[ { "created": "Mon, 27 Nov 2017 22:45:03 GMT", "version": "v1" }, { "created": "Wed, 29 Nov 2017 14:00:45 GMT", "version": "v2" } ]
2017-11-30
[ [ "Chivukula", "R. Sekhar", "" ] ]
In this talk I discuss the widespread impact of the top quark on phenomena in elementary particle physics as codified through the Standard Model (SM), its important role in motivating the possiblity of physics beyond the Standard Model (BSM), and its use as a signal for detailed studies of the SM and searches for BSM p...
hep-ph/9703352
null
B.V.Geshkenbein
Restrictions on the Hadronic Contribution to the Muon $(g-2)$-factor and to the Pion Electromagnetic Formfactor from Analytical Properties of the Pion Electromagnetic Formfactor
in LaTeX, pages 12
null
null
ITEP Preprint 11-97
hep-ph
null
We investigate restrictions on the hadronic contribution to the muon $(g-2)$ factor and to the pion electromagnetic formfactor from the analytical properties of the pion formfactor and the experimental data of the pion formfactor in the space-like [1] region. The values of the pion formfactor of [1] have been improve...
[ { "created": "Tue, 18 Mar 1997 11:38:56 GMT", "version": "v1" } ]
2007-05-23
[ [ "Geshkenbein", "B. V.", "" ] ]
We investigate restrictions on the hadronic contribution to the muon $(g-2)$ factor and to the pion electromagnetic formfactor from the analytical properties of the pion formfactor and the experimental data of the pion formfactor in the space-like [1] region. The values of the pion formfactor of [1] have been improved ...
1811.12058
Joydeep Roy
Joydeep Roy
Probing leptoquark chirality via top polarization at the Colliders
10 pages, 4 figures, Added references
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Anomalies in recent LHCb, Belle and Babar measurements of $R_{D^{(*)}}$, and $R_{K^{(*)}}$ in $B$ decays may indicate the new physics beyond the Standard Model (SM). The leptoquarks ($LQ$) that couple to the $3^{\mathrm{rd}}$ generation quarks and leptons have been proposed as a viable new physics (NP) explanation. S...
[ { "created": "Thu, 29 Nov 2018 10:55:02 GMT", "version": "v1" }, { "created": "Sat, 12 Jan 2019 21:56:57 GMT", "version": "v2" } ]
2019-01-15
[ [ "Roy", "Joydeep", "" ] ]
Anomalies in recent LHCb, Belle and Babar measurements of $R_{D^{(*)}}$, and $R_{K^{(*)}}$ in $B$ decays may indicate the new physics beyond the Standard Model (SM). The leptoquarks ($LQ$) that couple to the $3^{\mathrm{rd}}$ generation quarks and leptons have been proposed as a viable new physics (NP) explanation. Suc...
1312.4401
Gui-Jun Ding
Cai-Chang Li, Gui-Jun Ding
Generalised CP and Trimaximal TM$_1$ Lepton Mixing in $S_4$ Family Symmetry
28 pages
null
10.1016/j.nuclphysb.2014.02.002
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We construct two flavor models based on $S_4$ family symmetry and generalised CP symmetry. In both models, the $S_4$ family symmetry is broken down to the $Z^{SU}_2$ subgroup in the neutrino sector, as a consequence, the trimaximal $\text{TM}_1$ lepton mixing is produced. Depending on the free parameters in the flavo...
[ { "created": "Mon, 16 Dec 2013 15:34:19 GMT", "version": "v1" }, { "created": "Tue, 18 Feb 2014 10:52:39 GMT", "version": "v2" } ]
2014-02-19
[ [ "Li", "Cai-Chang", "" ], [ "Ding", "Gui-Jun", "" ] ]
We construct two flavor models based on $S_4$ family symmetry and generalised CP symmetry. In both models, the $S_4$ family symmetry is broken down to the $Z^{SU}_2$ subgroup in the neutrino sector, as a consequence, the trimaximal $\text{TM}_1$ lepton mixing is produced. Depending on the free parameters in the flavon ...
1603.04859
Francesco D'Eramo
Francesco D'Eramo, Kevin Hambleton, Stefano Profumo, Tim Stefaniak
Dark Matter Inelastic Up-Scattering with the Interstellar Plasma: An Exciting New Source of X-Ray Lines, including at 3.5 keV
16 pages, 9 figures; v2, version published in Physical Review D
Phys. Rev. D 93, 103011 (2016)
10.1103/PhysRevD.93.103011
SCIPP 16/04
hep-ph astro-ph.CO astro-ph.HE
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We explore the phenomenology of a class of models where the dark matter particle can inelastically up-scatter to a heavier excited state via off-diagonal dipolar interactions with the interstellar plasma (gas or free electrons). The heavier particle then rapidly decays back to the dark matter particle plus a quasi-mo...
[ { "created": "Tue, 15 Mar 2016 20:00:05 GMT", "version": "v1" }, { "created": "Tue, 7 Jun 2016 01:55:01 GMT", "version": "v2" } ]
2016-06-08
[ [ "D'Eramo", "Francesco", "" ], [ "Hambleton", "Kevin", "" ], [ "Profumo", "Stefano", "" ], [ "Stefaniak", "Tim", "" ] ]
We explore the phenomenology of a class of models where the dark matter particle can inelastically up-scatter to a heavier excited state via off-diagonal dipolar interactions with the interstellar plasma (gas or free electrons). The heavier particle then rapidly decays back to the dark matter particle plus a quasi-mono...
hep-ph/0502193
John Ellis
John Ellis, Yitzhak Frishman
Exotic Baryons in Two-Dimensional QCD
15 pages latex, no figures
JHEP 0508:081,2005
10.1088/1126-6708/2005/08/081
CERN-PH-TH/2005-017
hep-ph hep-th
null
Two-dimensional QCD has often been used as a laboratory for studying the full four-dimensional theory, providing, for example, an explicit realization of baryons as solitons. We review aspects of conventional baryons in two-dimensional QCD, including the classical and quantum contributions to their masses. We then di...
[ { "created": "Mon, 21 Feb 2005 16:21:45 GMT", "version": "v1" } ]
2009-11-11
[ [ "Ellis", "John", "" ], [ "Frishman", "Yitzhak", "" ] ]
Two-dimensional QCD has often been used as a laboratory for studying the full four-dimensional theory, providing, for example, an explicit realization of baryons as solitons. We review aspects of conventional baryons in two-dimensional QCD, including the classical and quantum contributions to their masses. We then disc...
hep-ph/0406053
Vladimir A. Smirnov
G. Heinrich, V.A. Smirnov
Analytical Evaluation of Dimensionally Regularized Massive On-Shell Double Boxes
14 pages LaTeX, references updated, to appear in Phys. Lett. B
Phys.Lett. B598 (2004) 55-66
10.1016/j.physletb.2004.07.058
DESY 04-094
hep-ph
null
The method of Mellin-Barnes representation is used to calculate dimensionally regularized massive on-shell double box Feynman diagrams contributing to Bhabha scattering at two loops.
[ { "created": "Fri, 4 Jun 2004 10:57:23 GMT", "version": "v1" }, { "created": "Mon, 16 Aug 2004 13:05:58 GMT", "version": "v2" } ]
2009-11-10
[ [ "Heinrich", "G.", "" ], [ "Smirnov", "V. A.", "" ] ]
The method of Mellin-Barnes representation is used to calculate dimensionally regularized massive on-shell double box Feynman diagrams contributing to Bhabha scattering at two loops.
hep-ph/0510312
Zhi-Zhong Xing
Zhi-zhong Xing
A Novel Parametrization of tau-lepton Dominance and Simplified One-loop Renormalization-group Equations of Neutrino Mixing Angles and CP-violating Phases
RevTex 10 pages
Phys.Lett.B633:550-556,2006
10.1016/j.physletb.2005.12.023
null
hep-ph
null
We point out that the $\tau$-lepton dominance in the one-loop renormalization-group (RG) equations of neutrino mixing quantities allows us to set a criterion to choose the most suitable parametrization of the lepton flavor mixing matrix $U$: its elements $U^{}_{3i}$ (for $i=1,2,3$) should be as simple as possible. Su...
[ { "created": "Mon, 24 Oct 2005 08:15:50 GMT", "version": "v1" } ]
2011-04-12
[ [ "Xing", "Zhi-zhong", "" ] ]
We point out that the $\tau$-lepton dominance in the one-loop renormalization-group (RG) equations of neutrino mixing quantities allows us to set a criterion to choose the most suitable parametrization of the lepton flavor mixing matrix $U$: its elements $U^{}_{3i}$ (for $i=1,2,3$) should be as simple as possible. Such...
2007.10994
Ze Long Liu
Hai Tao Li, Ze Long Liu, Ivan Vitev
Heavy meson tomography of cold nuclear matter at the electron-ion collider
11 pages, 6 figures, 1 table, v2: journal version. Figure panels, references, and discussion added
null
10.1016/j.physletb.2021.136261
LA-UR-20-28936
hep-ph hep-ex nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
An important part of the physics program at the future electron-ion collider is to understand the nature of hadronization and the transport of energy and matter in large nuclei. Open heavy flavor production in deep inelastic scattering provides a new tool to address these critical questions. We present the first calc...
[ { "created": "Tue, 21 Jul 2020 18:00:00 GMT", "version": "v1" }, { "created": "Tue, 6 Apr 2021 17:54:58 GMT", "version": "v2" } ]
2021-04-07
[ [ "Li", "Hai Tao", "" ], [ "Liu", "Ze Long", "" ], [ "Vitev", "Ivan", "" ] ]
An important part of the physics program at the future electron-ion collider is to understand the nature of hadronization and the transport of energy and matter in large nuclei. Open heavy flavor production in deep inelastic scattering provides a new tool to address these critical questions. We present the first calcul...
0809.4773
Kochelev Nikolai Innokentevich
N.I.Kochelev
Instantons and Spin-Flavor effects in Hadron Physics
6 pages, 4 figures, based on the talk given at the XV Annual Seminar "Nonlinear Phenomena in Complex Systems", Belarus, May 20-23, 2008
null
null
null
hep-ph hep-ex nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We discuss the role of instantons in the spectroscopy of ordinary and exotic hadrons as well as in high energy reactions. We argue that the instanton induced flavor- and spin-dependent quark-quark and quark-gluon interactions can explain many features of the hadron spectrum. The observed anomalous spin and flavor eff...
[ { "created": "Sat, 27 Sep 2008 14:09:40 GMT", "version": "v1" }, { "created": "Tue, 30 Sep 2008 06:50:54 GMT", "version": "v2" }, { "created": "Mon, 6 Oct 2008 14:26:03 GMT", "version": "v3" } ]
2008-10-06
[ [ "Kochelev", "N. I.", "" ] ]
We discuss the role of instantons in the spectroscopy of ordinary and exotic hadrons as well as in high energy reactions. We argue that the instanton induced flavor- and spin-dependent quark-quark and quark-gluon interactions can explain many features of the hadron spectrum. The observed anomalous spin and flavor effec...
hep-ph/9810393
Shang-Yung Wang
D. Boyanovsky, H. J. de Vega, Y.J. Ng, D.-S. Lee, S.-Y. Wang
Fermion Damping in a Fermion-Scalar Plasma
REVTEX, 16 pages, 3 eps figures included, published version. To be published in Phys. Rev. D
Phys. Rev. D 59, 105001 (1999)
10.1103/PhysRevD.59.105001
null
hep-ph
null
In this article we study the dynamics of fermions in a fermion-scalar plasma. We begin by obtaining the effective in-medium Dirac equation in real time which is fully renormalized and causal and leads to the initial value problem. For a heavy scalar we find the novel result that the decay of the scalar into fermion p...
[ { "created": "Fri, 16 Oct 1998 22:55:24 GMT", "version": "v1" }, { "created": "Wed, 13 Jan 1999 17:39:23 GMT", "version": "v2" } ]
2016-08-25
[ [ "Boyanovsky", "D.", "" ], [ "de Vega", "H. J.", "" ], [ "Ng", "Y. J.", "" ], [ "Lee", "D. -S.", "" ], [ "Wang", "S. -Y.", "" ] ]
In this article we study the dynamics of fermions in a fermion-scalar plasma. We begin by obtaining the effective in-medium Dirac equation in real time which is fully renormalized and causal and leads to the initial value problem. For a heavy scalar we find the novel result that the decay of the scalar into fermion pai...
1809.06286
Debojit Sarkar
Debojit Sarkar
Investigating jet-medium interaction using charge dependent three-particle correlation in high multiplicity p+Pb collisions at $\sqrt{s_{NN} }$ = 5.02 TeV
null
null
null
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Although many observations in high multiplicity p+Pb collisions at the LHC indicate striking similarity to heavy ion collisions, no evidence of jet-medium interactions has been observed till date. We study the effect of jet-medium interaction on the charge dependent three-particle correlation in high multiplicity p+P...
[ { "created": "Mon, 17 Sep 2018 15:47:58 GMT", "version": "v1" } ]
2018-09-18
[ [ "Sarkar", "Debojit", "" ] ]
Although many observations in high multiplicity p+Pb collisions at the LHC indicate striking similarity to heavy ion collisions, no evidence of jet-medium interactions has been observed till date. We study the effect of jet-medium interaction on the charge dependent three-particle correlation in high multiplicity p+Pb ...
1606.03026
Stephen P. Martin
Stephen P. Martin
Signal-background interference for a singlet spin-0 digluon resonance at the LHC
14 pages. v5 fixes errors in equations (2.10)-(2.15)
Phys. Rev. D 94, 035003 (2016)
10.1103/PhysRevD.94.035003
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Dijet mass distributions can be used to search for spin-0 resonances that couple to two gluons. I show that there is a substantial impact on such searches from the interference between the resonant signal and the continuum QCD background amplitudes. The signal dijet mass distribution is qualitatively modified by this...
[ { "created": "Thu, 9 Jun 2016 16:56:17 GMT", "version": "v1" }, { "created": "Fri, 10 Jun 2016 19:41:38 GMT", "version": "v2" }, { "created": "Mon, 20 Jun 2016 16:04:40 GMT", "version": "v3" }, { "created": "Tue, 19 Jul 2016 19:37:06 GMT", "version": "v4" }, { "cr...
2019-07-24
[ [ "Martin", "Stephen P.", "" ] ]
Dijet mass distributions can be used to search for spin-0 resonances that couple to two gluons. I show that there is a substantial impact on such searches from the interference between the resonant signal and the continuum QCD background amplitudes. The signal dijet mass distribution is qualitatively modified by this i...
hep-ph/9512269
Fischer Jan
Jan Fischer
High-order behaviour and summation methods in perturbative QCD
15 pages, one PS figure, Latex2e
Acta Phys.Polon.B27:2549-2566,1996
null
CERN-TH/95-325
hep-ph
null
After reviewing basic facts about large-order behaviour of perturbation expansions in various fields of physics, I consider several alternatives to the Borel summation method and discuss their relevance to different physical situations. Then I convey news about the singularities in the Borel plane, and discuss the to...
[ { "created": "Mon, 11 Dec 1995 09:07:41 GMT", "version": "v1" } ]
2014-11-17
[ [ "Fischer", "Jan", "" ] ]
After reviewing basic facts about large-order behaviour of perturbation expansions in various fields of physics, I consider several alternatives to the Borel summation method and discuss their relevance to different physical situations. Then I convey news about the singularities in the Borel plane, and discuss the topi...
hep-ph/0607115
Emi Kou
J. Alwall, R. Frederix, J.-M. Gerard, A. Giammanco, M. Herquet, S. Kalinin, E. Kou, V. Lemaitre, F. Maltoni
Is Vtb=1 ?
19 pages, 8 figures
Eur.Phys.J.C49:791-801,2007
10.1140/epjc/s10052-006-0137-y
CP3-06-01
hep-ph hep-ex
null
The strongest constraint on Vtb presently comes from the 3 x 3 unitarity of the CKM matrix, which fixes Vtb to be very close to one. If the unitarity is relaxed, current information from top production at Tevatron still leaves open the possibility that Vtb is sizably smaller than one. In minimal extensions of the sta...
[ { "created": "Tue, 11 Jul 2006 19:51:44 GMT", "version": "v1" }, { "created": "Tue, 11 Jul 2006 21:27:22 GMT", "version": "v2" } ]
2014-11-18
[ [ "Alwall", "J.", "" ], [ "Frederix", "R.", "" ], [ "Gerard", "J. -M.", "" ], [ "Giammanco", "A.", "" ], [ "Herquet", "M.", "" ], [ "Kalinin", "S.", "" ], [ "Kou", "E.", "" ], [ "Lemaitre", "V.", ...
The strongest constraint on Vtb presently comes from the 3 x 3 unitarity of the CKM matrix, which fixes Vtb to be very close to one. If the unitarity is relaxed, current information from top production at Tevatron still leaves open the possibility that Vtb is sizably smaller than one. In minimal extensions of the stand...
1405.0919
Jian-Rong Zhang
Jian-Rong Zhang
Possibility of $\Sigma_{c}(2800)$ and $\Lambda_{c}(2940)^{+}$ as $S$-wave $D^{(*)}N$ molecular states
talk given at the workshop on Hadron Nuclear Physics held from July 18 to 22, 2013 at Zhangjiajie, China
Int. J. Mod. Phys. Conf. Ser. 29, 1460220 (2014)
10.1142/S2010194514602208
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this talk, we give a brief review of our work studying the possibility of $\Sigma_{c}(2800)$ and $\Lambda_{c}(2940)^{+}$ as $S$-wave $D^{(*)}N$ molecular states from QCD sum rules.
[ { "created": "Fri, 2 May 2014 07:22:45 GMT", "version": "v1" } ]
2015-06-19
[ [ "Zhang", "Jian-Rong", "" ] ]
In this talk, we give a brief review of our work studying the possibility of $\Sigma_{c}(2800)$ and $\Lambda_{c}(2940)^{+}$ as $S$-wave $D^{(*)}N$ molecular states from QCD sum rules.
2111.12589
Ulrich Haisch
Ulrich Haisch and Gabri\"el Koole
Off-shell Higgs production at the LHC as a probe of the trilinear Higgs coupling
29 pages, 9 figures, 3 tables; extended version including a new appendix as accepted for publication in JHEP
null
10.1007/JHEP02(2022)030
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In the context of the Standard Model effective field theory (SMEFT) we examine the constraints on the trilinear Higgs coupling that originate from off-shell Higgs production in proton-proton collisions. Our calculation of the $gg \to h^\ast \to Z Z \to 4 \ell$ process includes two-loop corrections to gluon-gluon-fusi...
[ { "created": "Wed, 24 Nov 2021 16:07:46 GMT", "version": "v1" }, { "created": "Tue, 1 Feb 2022 12:00:17 GMT", "version": "v2" } ]
2022-02-23
[ [ "Haisch", "Ulrich", "" ], [ "Koole", "Gabriël", "" ] ]
In the context of the Standard Model effective field theory (SMEFT) we examine the constraints on the trilinear Higgs coupling that originate from off-shell Higgs production in proton-proton collisions. Our calculation of the $gg \to h^\ast \to Z Z \to 4 \ell$ process includes two-loop corrections to gluon-gluon-fusion...
0811.0875
Stanley J. Brodsky
Stanley J. Brodsky
Dynamic versus Static Structure Functions and Novel Diffractive Effects in QCD
8 pages, 1 figure. Presented at Diffraction 2008: International Workshop On Diffraction In High Energy Physics 9-14 Sep 2008, La Londe-les-Maures, France
AIP Conf.Proc.1105:315-322,2009
10.1063/1.3122202
SLAC-PUB-13454
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Initial- and final-state rescattering, neglected in the parton model, have a profound effect in QCD hard-scattering reactions, predicting single-spin asymmetries, diffractive deep inelastic scattering, diffractive hard hadronic reactions, the breakdown of the Lam Tung relation in Drell-Yan reactions, and nuclear shad...
[ { "created": "Thu, 6 Nov 2008 06:12:28 GMT", "version": "v1" } ]
2009-09-11
[ [ "Brodsky", "Stanley J.", "" ] ]
Initial- and final-state rescattering, neglected in the parton model, have a profound effect in QCD hard-scattering reactions, predicting single-spin asymmetries, diffractive deep inelastic scattering, diffractive hard hadronic reactions, the breakdown of the Lam Tung relation in Drell-Yan reactions, and nuclear shadow...
hep-ph/9812248
Xiao-Gang He
Xiao-Gang He (NTU) and Guey-Lin Lin (NCTU)
$B \to \eta' X_s$ in the Standard Model
Corrected a few minor typos. 6 page with 1 figure. Sprocl.Sty. Talk presented at the Workshop on CP Violation, Adelaide, Australia, 3-6 July, 1998
null
null
null
hep-ph
null
We study $B \to \eta' X_s$ within the framework of the Standard Model. Several mechanisms such as $b \to \eta' s g$ from the QCD anomaly, and $b \to \eta's $ and $B\to \eta' s \bar q$ from four-quark operators are treated simultaneously. We find that the first mechanism give a significant contribution to the branchin...
[ { "created": "Fri, 4 Dec 1998 08:45:45 GMT", "version": "v1" }, { "created": "Mon, 14 Dec 1998 08:18:50 GMT", "version": "v2" } ]
2007-05-23
[ [ "He", "Xiao-Gang", "", "NTU" ], [ "Lin", "Guey-Lin", "", "NCTU" ] ]
We study $B \to \eta' X_s$ within the framework of the Standard Model. Several mechanisms such as $b \to \eta' s g$ from the QCD anomaly, and $b \to \eta's $ and $B\to \eta' s \bar q$ from four-quark operators are treated simultaneously. We find that the first mechanism give a significant contribution to the branching ...
hep-ph/0304011
Julien Serreau
Julien Serreau
Disoriented Chiral Condensate Formation in Heavy Ion Collisions?
12 pages, 5 figures. Talk at TH-2002, 'International Conference on Theoretical Physics', UNESCO, Paris, France
null
null
HD-THEP-03-08
hep-ph hep-ex nucl-ex nucl-th
null
One of the main aims of present and upcoming high energy heavy ion collision experiments is to study new phases of matter at extreme temperature and density. It is expected that a nontrivial classical pion field configuration can occasionally form during the out-of-equilibrium chiral phase transition. We have recentl...
[ { "created": "Tue, 1 Apr 2003 15:20:34 GMT", "version": "v1" } ]
2007-05-23
[ [ "Serreau", "Julien", "" ] ]
One of the main aims of present and upcoming high energy heavy ion collision experiments is to study new phases of matter at extreme temperature and density. It is expected that a nontrivial classical pion field configuration can occasionally form during the out-of-equilibrium chiral phase transition. We have recently ...
1401.1277
Thomas Mehen
Thomas Mehen (Duke U.)
Exotic Quarkonium Spectroscopy: X(3872), Z_b(10610), and Z_b(10650) in Non-Relativistic Effective Theory
5 pages, to appear in the proceedings of PhiPsi2013: International Workshop on e+e- collisions from Phi to Psi 2013, Rome, Italy, Sep. 9-12, 2013
null
10.1142/S2010194514604311
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
This talk summarizes recent developments in quarkonium spectroscopy. I comment on the relation between the Z_b(10610) and Z_b(10650) and recently observed Z_c(3900) and Z_c(4025) states. Then I discuss a number of calculations using non-relativistic effective field theory for the X(3872), Z_b(10610), and Z_b(10650), ...
[ { "created": "Tue, 7 Jan 2014 05:41:38 GMT", "version": "v1" } ]
2015-06-18
[ [ "Mehen", "Thomas", "", "Duke U." ] ]
This talk summarizes recent developments in quarkonium spectroscopy. I comment on the relation between the Z_b(10610) and Z_b(10650) and recently observed Z_c(3900) and Z_c(4025) states. Then I discuss a number of calculations using non-relativistic effective field theory for the X(3872), Z_b(10610), and Z_b(10650), un...
hep-ph/0402074
Durmus Demir
Durmus A. Demir
Higgs Quark Couplings in SUSY with CP and Flavor Violations
To appear in the Proceedings of SUSY 2003, held at the University of Arizona, Tucson, AZ, 5-10 June 2003
null
null
FTPI-MINN-04/06, UMN-TH-2233/04
hep-ph
null
In minimal supersymmetric model with a light Higgs sector, explicit CP violation and most general flavor mixings in the sfermion sector, integration of the superpartners out of the spectrum induces potentially large contributions to the Yukawa couplings of light quarks via those of the heavier ones. These corrections...
[ { "created": "Fri, 6 Feb 2004 16:55:41 GMT", "version": "v1" }, { "created": "Sun, 8 Feb 2004 12:43:14 GMT", "version": "v2" } ]
2007-05-23
[ [ "Demir", "Durmus A.", "" ] ]
In minimal supersymmetric model with a light Higgs sector, explicit CP violation and most general flavor mixings in the sfermion sector, integration of the superpartners out of the spectrum induces potentially large contributions to the Yukawa couplings of light quarks via those of the heavier ones. These corrections c...
1612.04701
Stefan Gieseke
Stefan Gieseke, Frash\"er Loshaj, Patrick Kirchgae{\ss}er
Soft and diffractive scattering with the cluster model in Herwig
13 pages, many figures
null
10.1140/epjc/s10052-017-4727-7
KA-TP-42-2016, MCNET-16-46
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a new model for soft interactions in the event-generator Herwig. The model consists of two components. One to model diffractive final states on the basis of the cluster hadronization model and a second component that addresses soft multiple interactions as multiple particle production in multi- peripheral ...
[ { "created": "Wed, 14 Dec 2016 16:04:54 GMT", "version": "v1" } ]
2017-04-05
[ [ "Gieseke", "Stefan", "" ], [ "Loshaj", "Frashër", "" ], [ "Kirchgaeßer", "Patrick", "" ] ]
We present a new model for soft interactions in the event-generator Herwig. The model consists of two components. One to model diffractive final states on the basis of the cluster hadronization model and a second component that addresses soft multiple interactions as multiple particle production in multi- peripheral ki...
hep-ph/9807424
Tao Han
Tao Han and Ren-Jie Zhang
Extending the Higgs Boson Reach at the Upgraded Fermilab Tevatron
revised version, to appear in PRL
Phys.Rev.Lett. 82 (1999) 25-28
10.1103/PhysRevLett.82.25
MADPH-98-1067
hep-ph hep-ex
null
We study the observability for a Standard Model-like Higgs boson at an upgraded Tevatron via the modes $p \bar p \to gg \to h \to \ww \to \ljj$ and $\ll$. We find that with c. m. energy of 2 TeV and an integrated luminosity of 30 fb$^{-1}$ the signal may be observable for the mass range of $135 {\gev} \lsim \mh \lsim...
[ { "created": "Mon, 20 Jul 1998 17:00:16 GMT", "version": "v1" }, { "created": "Tue, 1 Dec 1998 21:58:24 GMT", "version": "v2" } ]
2009-10-31
[ [ "Han", "Tao", "" ], [ "Zhang", "Ren-Jie", "" ] ]
We study the observability for a Standard Model-like Higgs boson at an upgraded Tevatron via the modes $p \bar p \to gg \to h \to \ww \to \ljj$ and $\ll$. We find that with c. m. energy of 2 TeV and an integrated luminosity of 30 fb$^{-1}$ the signal may be observable for the mass range of $135 {\gev} \lsim \mh \lsim 1...
1008.2813
Richard J. van Kooten
R. Van Kooten (for the D0 Collaboration)
D0 Evidence for CP Violation and Implication for CPT Violation in B-Meson Mixing
5 pages, 1 figure; presented at the Fifth Meeting on CPT and Lorentz Symmetry, Indiana University, Bloomington, Indiana, June 28-July 2, 2010. CPT violation treatment not from D0 Collaboration, but work initiated at meeting
null
10.1142/9789814327688_0031
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
An analysis from the D0 Collaboration measuring the charge asymmetry A^b_sl of like-sign dimuon events due to semileptonic b-hadron decays at the Fermilab Tevatron Collider is described. It differs by 3.2 standard deviations from the Standard Model prediction to provide first evidence of CPT-invariant anomalous CP vi...
[ { "created": "Tue, 17 Aug 2010 04:03:55 GMT", "version": "v1" } ]
2019-08-21
[ [ "Van Kooten", "R.", "", "for the D0 Collaboration" ] ]
An analysis from the D0 Collaboration measuring the charge asymmetry A^b_sl of like-sign dimuon events due to semileptonic b-hadron decays at the Fermilab Tevatron Collider is described. It differs by 3.2 standard deviations from the Standard Model prediction to provide first evidence of CPT-invariant anomalous CP viol...
2403.13007
Claude A. Pruneau
Claude Pruneau, Sumit Basu, Victor Gonzalez, Brian Hanley, Ana Marin, Alexandru F. Dobrin, Alexandru Manea
Mixed Species Charge and Baryon Balance Functions Studies with PYTHIA
5 figures, 12 pages
null
null
null
hep-ph hep-ex nucl-ex nucl-th
http://creativecommons.org/licenses/by/4.0/
Mixed species charge and baryon balance functions are computed based on proton--proton (pp) collisions simulated with the PYTHIA8 model. Simulations are performed with selected values of the collision energy $\sqrt{s}$ and the Monash tune and the Ropes and Shoving modes of PYTHIA8 to explore whether such measurements...
[ { "created": "Sat, 16 Mar 2024 14:56:01 GMT", "version": "v1" }, { "created": "Fri, 22 Mar 2024 22:16:04 GMT", "version": "v2" } ]
2024-03-26
[ [ "Pruneau", "Claude", "" ], [ "Basu", "Sumit", "" ], [ "Gonzalez", "Victor", "" ], [ "Hanley", "Brian", "" ], [ "Marin", "Ana", "" ], [ "Dobrin", "Alexandru F.", "" ], [ "Manea", "Alexandru", "" ] ]
Mixed species charge and baryon balance functions are computed based on proton--proton (pp) collisions simulated with the PYTHIA8 model. Simulations are performed with selected values of the collision energy $\sqrt{s}$ and the Monash tune and the Ropes and Shoving modes of PYTHIA8 to explore whether such measurements p...
1111.4237
Andrzej Czarnecki
Andrzej Czarnecki, Xavier Garcia i Tormo, and William J. Marciano
Muon decay in orbit spectra for muon-electron conversion experiments
submitted to Proceedings of the International Conference on Exotic Atoms and Related Topics (EXA 2011)
null
10.1007/s10751-011-0540-0
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We have determined in detail the electron spectrum in the decay of bound muons. These results are especially relevant for the upcoming muon-electron conversion experiments.
[ { "created": "Thu, 17 Nov 2011 23:16:51 GMT", "version": "v1" } ]
2015-06-03
[ [ "Czarnecki", "Andrzej", "" ], [ "Tormo", "Xavier Garcia i", "" ], [ "Marciano", "William J.", "" ] ]
We have determined in detail the electron spectrum in the decay of bound muons. These results are especially relevant for the upcoming muon-electron conversion experiments.
hep-ph/0303246
Chao-Qiang Geng
C.Q. Geng and C.C. Liu
Study of $B_{s}\to (\eta,\eta',\phi)\ell\bar{\ell}$ Decays
21 pages, 6 Figures, to be published in J. Phys. G
J.Phys.G29:1103-1118,2003
10.1088/0954-3899/29/6/313
null
hep-ph
null
We study the rare decays of $B_{s} \to M_s\ell \bar{\ell}$ ($M_s=\eta, \eta',\phi$ and $\ell=\nu,e,\mu,\tau$) in the standard model. With the hadronic form factors evaluated in the light front and constituent quark models, we estimate the decay branching ratios, respectively. We also discuss the longitudinal lepton p...
[ { "created": "Fri, 28 Mar 2003 20:08:03 GMT", "version": "v1" } ]
2008-11-26
[ [ "Geng", "C. Q.", "" ], [ "Liu", "C. C.", "" ] ]
We study the rare decays of $B_{s} \to M_s\ell \bar{\ell}$ ($M_s=\eta, \eta',\phi$ and $\ell=\nu,e,\mu,\tau$) in the standard model. With the hadronic form factors evaluated in the light front and constituent quark models, we estimate the decay branching ratios, respectively. We also discuss the longitudinal lepton pol...
2112.14116
Rudolf Faustov
V.P. Gerdt, A. Karimkhodzhaev, R.N. Faustov
Hadronic Vacuum Polarization and Test of Quantum Electrodynamics at Low Energies
12 pages, unpublished JINR preprint 1978
null
null
JINR P2-11308, 1978
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A hadronic vacuum polarization correction to the photon propagator is found by using the Dubnicka-Meshcheryakov parameterization of the pion electromagnetic form factor and new experimental data on the $e^+e^-$ hadrons annihilation cross section. Then, the contribution from the hadronic vacuum polarization to the muo...
[ { "created": "Tue, 28 Dec 2021 12:30:52 GMT", "version": "v1" } ]
2021-12-30
[ [ "Gerdt", "V. P.", "" ], [ "Karimkhodzhaev", "A.", "" ], [ "Faustov", "R. N.", "" ] ]
A hadronic vacuum polarization correction to the photon propagator is found by using the Dubnicka-Meshcheryakov parameterization of the pion electromagnetic form factor and new experimental data on the $e^+e^-$ hadrons annihilation cross section. Then, the contribution from the hadronic vacuum polarization to the muon ...
2109.02670
Sudhakantha Girmohanta
S. Girmohanta and R. Shrock
An Extra-Dimensional Model of Dark Matter
14 pages, 5 figures
Physical Review D 104, 115021 (2021)
10.1103/PhysRevD.104.115021
Stony Brook preprint YITP-SB-2021-15
hep-ph gr-qc hep-th
http://creativecommons.org/licenses/by/4.0/
We present a model for dark matter with extra spatial dimensions in which Standard-Model (SM) fermions have localized wave functions. The underlying gauge group is $G_{\rm SM} \otimes {\rm U}(1)_z$, and the dark matter particle is a SM-singlet Dirac fermion, $\chi$, which is charged under the ${\rm U}(1)_z$ gauge sym...
[ { "created": "Mon, 6 Sep 2021 18:00:05 GMT", "version": "v1" } ]
2021-12-21
[ [ "Girmohanta", "S.", "" ], [ "Shrock", "R.", "" ] ]
We present a model for dark matter with extra spatial dimensions in which Standard-Model (SM) fermions have localized wave functions. The underlying gauge group is $G_{\rm SM} \otimes {\rm U}(1)_z$, and the dark matter particle is a SM-singlet Dirac fermion, $\chi$, which is charged under the ${\rm U}(1)_z$ gauge symme...
0705.4280
Dmitri Kharzeev
D. Kharzeev and K. Tuchin
Bulk viscosity of QCD matter near the critical temperature
8 pages, 1 figure
JHEP0809:093,2008
10.1088/1126-6708/2008/09/093
BNL/NT-07/23, RBRC-681
hep-ph hep-lat nucl-ex nucl-th
null
Kubo's formula relates bulk viscosity to the retarded Green's function of the trace of the energy-momentum tensor. Using low energy theorems of QCD for the latter we derive the formula which relates the bulk viscosity to the energy density and pressure of hot matter. We then employ the available lattice QCD data to e...
[ { "created": "Tue, 29 May 2007 19:34:29 GMT", "version": "v1" }, { "created": "Tue, 29 May 2007 20:38:51 GMT", "version": "v2" } ]
2008-11-26
[ [ "Kharzeev", "D.", "" ], [ "Tuchin", "K.", "" ] ]
Kubo's formula relates bulk viscosity to the retarded Green's function of the trace of the energy-momentum tensor. Using low energy theorems of QCD for the latter we derive the formula which relates the bulk viscosity to the energy density and pressure of hot matter. We then employ the available lattice QCD data to ext...
hep-ph/0305182
Jinfeng Liao
Lianyi He, Guang Bian, Jinfeng Liao and Pengfei Zhuang
Quark Probability Distribution at Finite Temperature and Density
7 papes, 4 figures
null
null
null
hep-ph
null
Quark deconfinement phase transition at finite temperature and density is investigated in the frame of quantum mechanics. By solving the Schr\"odinger equation for a heavy quark in a thermal mean field, we calculate the quark probability distribution as a function of temperature and density. The confined wave functio...
[ { "created": "Fri, 16 May 2003 13:04:17 GMT", "version": "v1" } ]
2007-05-23
[ [ "He", "Lianyi", "" ], [ "Bian", "Guang", "" ], [ "Liao", "Jinfeng", "" ], [ "Zhuang", "Pengfei", "" ] ]
Quark deconfinement phase transition at finite temperature and density is investigated in the frame of quantum mechanics. By solving the Schr\"odinger equation for a heavy quark in a thermal mean field, we calculate the quark probability distribution as a function of temperature and density. The confined wave function ...
hep-ph/0311055
Mauro Napsuciale
Mauro Napsuciale and Mariana Kirchbach
Avoiding superluminal propagation of higher spin waves via projectors onto W^2 invariant subspaces
14 pages, Conditionally accepted in Jour. Math. Phys
J.Math.Phys.45:4515-4523,2004
10.1063/1.1794843
null
hep-ph
null
We propose to describe higher spins as invariant subspaces of the Casimir operators of the Poincar\'{e} Group, P^{2}, and the squared Pauli-Lubanski operator, W^{2}, in a properly chosen representation, \psi(p) (in momentum space), of the Homogeneous Lorentz Group. The resulting equation of motion for any field with ...
[ { "created": "Tue, 4 Nov 2003 20:11:19 GMT", "version": "v1" }, { "created": "Thu, 15 Jul 2004 22:56:58 GMT", "version": "v2" } ]
2009-09-24
[ [ "Napsuciale", "Mauro", "" ], [ "Kirchbach", "Mariana", "" ] ]
We propose to describe higher spins as invariant subspaces of the Casimir operators of the Poincar\'{e} Group, P^{2}, and the squared Pauli-Lubanski operator, W^{2}, in a properly chosen representation, \psi(p) (in momentum space), of the Homogeneous Lorentz Group. The resulting equation of motion for any field with s\...
1408.0654
Seyed Yaser Ayazi
Seyed Yaser Ayazi and S.Mahdi Firouzabadi
Constraining Inert Triplet Dark Matter by the LHC and FermiLAT
22 pages, 7 figures, Accepted in JCAP
JCAP 11(2014)005
10.1088/1475-7516/2014/11/005
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study collider phenomenology of inert triplet scalar dark matter at the LHC. We discuss possible decay of Higgs boson to dark matter candidate and apply current experimental data for invisible Higgs decay and $R_{\gamma\gamma}$ to constrain parameter space of our model. We also investigate constraints on dark matt...
[ { "created": "Mon, 4 Aug 2014 12:03:28 GMT", "version": "v1" }, { "created": "Wed, 15 Oct 2014 08:45:24 GMT", "version": "v2" } ]
2015-01-27
[ [ "Ayazi", "Seyed Yaser", "" ], [ "Firouzabadi", "S. Mahdi", "" ] ]
We study collider phenomenology of inert triplet scalar dark matter at the LHC. We discuss possible decay of Higgs boson to dark matter candidate and apply current experimental data for invisible Higgs decay and $R_{\gamma\gamma}$ to constrain parameter space of our model. We also investigate constraints on dark matter...
1305.2124
Viviana Gammaldi
J. A. R. Cembranos, A. de la Cruz-Dombriz, V. Gammaldi, R. A. Lineros and A. L. Maroto
Reliability of Monte Carlo event generators for gamma ray dark matter searches
15 pages, 11 figures
JHEP 1309 (2013) 077
10.1007/JHEP09(2013)077
null
hep-ph astro-ph.CO astro-ph.HE
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the differences in the gamma ray spectra simulated by four Monte Carlo event generator packages developed in particle physics. Two different versions of PYTHIA and two of HERWIG are analyzed, namely PYTHIA 6.418 and HERWIG 6.5.10 in Fortran and PYTHIA 8.165 and HERWIG 2.6.1 in C++. For all the studied channe...
[ { "created": "Thu, 9 May 2013 15:37:19 GMT", "version": "v1" }, { "created": "Mon, 15 Jul 2013 17:30:29 GMT", "version": "v2" }, { "created": "Wed, 7 Aug 2013 13:40:04 GMT", "version": "v3" } ]
2013-10-02
[ [ "Cembranos", "J. A. R.", "" ], [ "de la Cruz-Dombriz", "A.", "" ], [ "Gammaldi", "V.", "" ], [ "Lineros", "R. A.", "" ], [ "Maroto", "A. L.", "" ] ]
We study the differences in the gamma ray spectra simulated by four Monte Carlo event generator packages developed in particle physics. Two different versions of PYTHIA and two of HERWIG are analyzed, namely PYTHIA 6.418 and HERWIG 6.5.10 in Fortran and PYTHIA 8.165 and HERWIG 2.6.1 in C++. For all the studied channels...
0811.0774
Markus Diehl
Markus Diehl
Transverse momentum of partons: from low to high pT
7 pages, 3 figures. Talk given at Light Cone 2008, Mulhouse, France, 7-11 July 2008
PoS LC2008:031,2008
null
DESY 08-165
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Transverse-momentum spectra in hard processes are typically described either in terms of intrinsic transverse momentum of partons, or in terms of perturbative radiation. The relation between these descriptions is discussed for the example of semi-inclusive deep inelastic scattering, with special focus on the angular ...
[ { "created": "Wed, 5 Nov 2008 16:54:51 GMT", "version": "v1" } ]
2009-02-19
[ [ "Diehl", "Markus", "" ] ]
Transverse-momentum spectra in hard processes are typically described either in terms of intrinsic transverse momentum of partons, or in terms of perturbative radiation. The relation between these descriptions is discussed for the example of semi-inclusive deep inelastic scattering, with special focus on the angular di...
hep-ph/9610512
null
Luis Bento (U. Lisboa) and Rui Neves (U. Durham)
Implications of anomalous gauge boson interactions to the fermion electromagnetic moments
14 pages, LATeX, to appear in Modern Physics Letters A, some literary changes, a few notation corrections
Mod.Phys.Lett. A12 (1997) 673-684
10.1142/S0217732397000704
CFNUL/96-08
hep-ph
null
We calculate the electromagnetic fermion form-factors induced by the anomalous gauge boson interactions contained in the operators ODW and ODB. Other results regarding anomalous triple gauge boson interactions are briefly overviewed. We study the interplay between vertex corrections and gauge boson self-energies exte...
[ { "created": "Mon, 28 Oct 1996 17:56:49 GMT", "version": "v1" }, { "created": "Thu, 24 Apr 1997 19:53:27 GMT", "version": "v2" } ]
2009-10-30
[ [ "Bento", "Luis", "", "U. Lisboa" ], [ "Neves", "Rui", "", "U. Durham" ] ]
We calculate the electromagnetic fermion form-factors induced by the anomalous gauge boson interactions contained in the operators ODW and ODB. Other results regarding anomalous triple gauge boson interactions are briefly overviewed. We study the interplay between vertex corrections and gauge boson self-energies extend...
2302.03094
Igor Ivanov
Duanyang Zhao, Igor P. Ivanov, Roman Pasechnik, Pengming Zhang
Limiting FCNC induced by a CP symmetry of order 4
1+35 pages, 11 figures; v2: figures updated, clarifications added, matches the published version
JHEP 04 (2023) 116
10.1007/JHEP04(2023)116
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
CP4 3HDM is a three-Higgs-doublet model based on the $CP$ symmetry of order 4 (CP4). Imposing CP4 leads to remarkable connections between the scalar and Yukawa sectors and unavoidably generates tree-level flavor-changing neutral couplings (FCNC). It remains unclear whether FCNC can be sufficiently suppressed in the C...
[ { "created": "Mon, 6 Feb 2023 19:52:48 GMT", "version": "v1" }, { "created": "Fri, 28 Apr 2023 03:11:50 GMT", "version": "v2" } ]
2023-05-01
[ [ "Zhao", "Duanyang", "" ], [ "Ivanov", "Igor P.", "" ], [ "Pasechnik", "Roman", "" ], [ "Zhang", "Pengming", "" ] ]
CP4 3HDM is a three-Higgs-doublet model based on the $CP$ symmetry of order 4 (CP4). Imposing CP4 leads to remarkable connections between the scalar and Yukawa sectors and unavoidably generates tree-level flavor-changing neutral couplings (FCNC). It remains unclear whether FCNC can be sufficiently suppressed in the CP4...
2304.09484
Oleksandr Novak
R.I. Kholodov, O.P. Novak, M.M. Diachenko
Resonant and polarization effects in the processes of quantum electrodynamics in a strong magnetic field
283 pages, 24 figures, monograph
null
null
null
hep-ph
http://creativecommons.org/licenses/by-nc-nd/4.0/
The monograph considers resonance and polarization effects in quantum electrodynamics processes that take place in a strong external magnetic field. A method for analyzing spin-polarization effects has been developed. The factorization of process cross sections in resonant conditions and the representation of these c...
[ { "created": "Wed, 19 Apr 2023 08:16:29 GMT", "version": "v1" } ]
2023-04-20
[ [ "Kholodov", "R. I.", "" ], [ "Novak", "O. P.", "" ], [ "Diachenko", "M. M.", "" ] ]
The monograph considers resonance and polarization effects in quantum electrodynamics processes that take place in a strong external magnetic field. A method for analyzing spin-polarization effects has been developed. The factorization of process cross sections in resonant conditions and the representation of these cro...
2009.13534
Zhengkang Zhang
Tanner Trickle, Zhengkang Zhang, Kathryn M. Zurek
Effective Field Theory of Dark Matter Direct Detection With Collective Excitations
46 pages, 4 figures; v2: expanded operator list and revised in-medium effects, conclusions unchanged; updated reference to PhonoDark https://phonodark.caltech.edu
null
null
CALT-TH-2020-037
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We develop a framework for computing light dark matter direct detection rates through single phonon and magnon excitations via general effective operators. Our work generalizes previous calculations focused on spin-independent interactions involving the total nucleon and electron numbers $N$ (the usual route to excit...
[ { "created": "Mon, 28 Sep 2020 18:00:02 GMT", "version": "v1" }, { "created": "Tue, 19 Oct 2021 07:14:28 GMT", "version": "v2" } ]
2021-10-20
[ [ "Trickle", "Tanner", "" ], [ "Zhang", "Zhengkang", "" ], [ "Zurek", "Kathryn M.", "" ] ]
We develop a framework for computing light dark matter direct detection rates through single phonon and magnon excitations via general effective operators. Our work generalizes previous calculations focused on spin-independent interactions involving the total nucleon and electron numbers $N$ (the usual route to excite ...
2301.07833
Naoki Yamatsu
Shuichiro Funatsu, Hisaki Hatanaka, Yuta Orikasa, Naoki Yamatsu
Single Higgs Boson Production at Electron-Positron Colliders in Gauge-Higgs Unification
34 pages, 9 tables, 11 figures; some comments and references added; Sec. 3 moved to Appendix A; accepted for publication in Physical Review D
null
10.1103/PhysRevD.107.075030
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
We examine contributions to single Higgs boson production processes via $Z'$ and $W'$ bosons in the $SU(3)_C\times SO(5)_W\times U(1)_X$ gauge-Higgs unification (GHU) model. In particular, we analyze the cross sections of three single Higgs boson production processes $e^-e^+\to Zh$, $e^-e^+\to \nu\bar{\nu}h$, and $e^...
[ { "created": "Thu, 19 Jan 2023 00:31:09 GMT", "version": "v1" }, { "created": "Wed, 5 Apr 2023 23:21:10 GMT", "version": "v2" } ]
2023-05-10
[ [ "Funatsu", "Shuichiro", "" ], [ "Hatanaka", "Hisaki", "" ], [ "Orikasa", "Yuta", "" ], [ "Yamatsu", "Naoki", "" ] ]
We examine contributions to single Higgs boson production processes via $Z'$ and $W'$ bosons in the $SU(3)_C\times SO(5)_W\times U(1)_X$ gauge-Higgs unification (GHU) model. In particular, we analyze the cross sections of three single Higgs boson production processes $e^-e^+\to Zh$, $e^-e^+\to \nu\bar{\nu}h$, and $e^-e...
hep-ph/0610056
Alireza Haghpayma
Alireza Haghpayma
Diquark Approach to Calculating the Mass and Stability of H - Dibaryon
2 pages
null
null
null
hep-ph
null
By using of vector diquark ideas in the chiral limit diquark correlations in the relativistic region and imposing HF interactions between quarks in a vector diquark we calculated the mass of H-dibaryon, also by using of tunneling method we simultaneously calculated its decay width.
[ { "created": "Wed, 4 Oct 2006 20:03:09 GMT", "version": "v1" } ]
2007-05-23
[ [ "Haghpayma", "Alireza", "" ] ]
By using of vector diquark ideas in the chiral limit diquark correlations in the relativistic region and imposing HF interactions between quarks in a vector diquark we calculated the mass of H-dibaryon, also by using of tunneling method we simultaneously calculated its decay width.
1711.02083
Thomas Cridge
Francesco Coradeschi, Thomas Cridge
reSolve - A Transverse Momentum Resummation Tool
60 pages, 35 figures
Comput.Phys.Commun. 238 (2019) 262-294
10.1016/j.cpc.2018.11.024
DAMTP-2018-25
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this note, we introduce the new tool reSolve, a Monte Carlo differential cross-section and parton-level event generator whose main purpose is to add transverse momentum resummation to a general class of inclusive processes at hadron colliders, namely all those which do not involve hadrons or jets in the measured f...
[ { "created": "Mon, 6 Nov 2017 18:56:00 GMT", "version": "v1" }, { "created": "Fri, 15 Jun 2018 00:31:51 GMT", "version": "v2" } ]
2019-04-15
[ [ "Coradeschi", "Francesco", "" ], [ "Cridge", "Thomas", "" ] ]
In this note, we introduce the new tool reSolve, a Monte Carlo differential cross-section and parton-level event generator whose main purpose is to add transverse momentum resummation to a general class of inclusive processes at hadron colliders, namely all those which do not involve hadrons or jets in the measured fin...
hep-ph/9808452
Richard Lebed
Richard F. Lebed
Explicit Quark-Hadron Duality in 1+1 Dimensions
4 pages, Latex (worldsci.sty), 3 eps figures. Talk presented at the Third International Conference on Quark Confinement and the Hadron Spectrum, Jefferson Lab, Newport News, Virginia, June 7-12, 1998; to appear in Proceedings
null
null
JLAB-THY-98-33
hep-ph
null
Explicit quark-hadron duality in the limit of heavy quark mass is studied using the 't Hooft model, where both partonic and hadronic amplitudes may be computed exactly. Results for weak decays of heavy mesons are presented for both standard spectator decays, where the duality limit is convincingly approached, and ann...
[ { "created": "Fri, 28 Aug 1998 14:35:46 GMT", "version": "v1" } ]
2007-05-23
[ [ "Lebed", "Richard F.", "" ] ]
Explicit quark-hadron duality in the limit of heavy quark mass is studied using the 't Hooft model, where both partonic and hadronic amplitudes may be computed exactly. Results for weak decays of heavy mesons are presented for both standard spectator decays, where the duality limit is convincingly approached, and annih...
1502.01790
S. Ganesh
S. Ganesh and M. Mishra
pQCD approach to Charmonium regeneration in QGP at the LHC
20 pages, 15 figures; Accepted for publication in Nuclear Physics A
Nuclear Physics A 947 (2016) 38-63
10.1016/j.nuclphysa.2015.12.004
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We analyze the applicability of perturbative QCD (pQCD) approach to the issue of $J/\psi$ recombination at the Large Hadron Collider (LHC), and calculate the recombination cross section for $c\bar{c}$ recombination to form $J/\psi$ as a function of temperature. The charmonium wavefunction is obtained by employing a t...
[ { "created": "Fri, 6 Feb 2015 04:33:20 GMT", "version": "v1" }, { "created": "Fri, 18 Dec 2015 10:47:18 GMT", "version": "v2" } ]
2016-02-19
[ [ "Ganesh", "S.", "" ], [ "Mishra", "M.", "" ] ]
We analyze the applicability of perturbative QCD (pQCD) approach to the issue of $J/\psi$ recombination at the Large Hadron Collider (LHC), and calculate the recombination cross section for $c\bar{c}$ recombination to form $J/\psi$ as a function of temperature. The charmonium wavefunction is obtained by employing a tem...
hep-ph/9708459
A. Thomas
J. T. Londergan (Indiana University), S. A. Braendler and A. W. Thomas (University of Adelaide)
Testing Parton Charge Symmetry at HERA
8 pages, including 4 postscript figures, uses psfig
Phys.Lett.B424:185-190,1998
10.1016/S0370-2693(97)01483-4
IU/NTC 97-06 and ADP--97--31/T264
hep-ph
null
There are strong theoretical indications that the minority valence quark distributions in the nucleon may break charge symmetry by as much as 3-5%. We show that a comparison of $e^{\pm} D$ deep inelastic scattering through the charged current, for example at HERA, could provide a direct test of this effect. This meas...
[ { "created": "Tue, 26 Aug 1997 03:47:52 GMT", "version": "v1" } ]
2010-02-17
[ [ "Londergan", "J. T.", "", "Indiana University" ], [ "Braendler", "S. A.", "", "University of Adelaide" ], [ "Thomas", "A. W.", "", "University of Adelaide" ] ]
There are strong theoretical indications that the minority valence quark distributions in the nucleon may break charge symmetry by as much as 3-5%. We show that a comparison of $e^{\pm} D$ deep inelastic scattering through the charged current, for example at HERA, could provide a direct test of this effect. This measur...
0710.1054
Kai Schwenzer
Reinhard Alkofer, Christian S. Fischer, Markus Q. Huber, Kai Schwenzer
Lower dimensional Yang-Mills theory as a laboratory to study the infrared regime
7 pages, 6 figures; talk presented at Lattice 2007
POSLAT2007:329,2007
null
null
hep-ph hep-lat
null
Lattice studies of the infrared regime of gauge theories are complicated by the required extensive limits, the performed gauge fixing and the demand for high statistics. Using a general power counting scheme for the infrared limit of Landau gauge SU(N) Yang-Mills theory in arbitrary dimensions we show that the infrar...
[ { "created": "Thu, 4 Oct 2007 17:02:23 GMT", "version": "v1" } ]
2008-11-26
[ [ "Alkofer", "Reinhard", "" ], [ "Fischer", "Christian S.", "" ], [ "Huber", "Markus Q.", "" ], [ "Schwenzer", "Kai", "" ] ]
Lattice studies of the infrared regime of gauge theories are complicated by the required extensive limits, the performed gauge fixing and the demand for high statistics. Using a general power counting scheme for the infrared limit of Landau gauge SU(N) Yang-Mills theory in arbitrary dimensions we show that the infrared...
0901.4455
Theodoros Diakonidis
Theodoros Diakonidis
Reduction Method for One-loop Tensor 5- and 6-point Integrals Revisited
Prepared for 2008 International Linear Collider Workshop (LCWS08 and ILC08), Chicago, 16-20 Nov. 2008
null
null
DESY 09-16, SFB-CPP-09-11, HEPTOOLS 09-006
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A complete analytical reduction of general one-loop Feynman integrals with five legs for tensors up to rank R=3 and six legs for tensors up to rank 4 is reviewed. An elegant formalism with extensive use of signed minors was developed for the cancellation of leading inverse Gram determinants.The resulting compact form...
[ { "created": "Wed, 28 Jan 2009 13:30:35 GMT", "version": "v1" } ]
2009-01-29
[ [ "Diakonidis", "Theodoros", "" ] ]
A complete analytical reduction of general one-loop Feynman integrals with five legs for tensors up to rank R=3 and six legs for tensors up to rank 4 is reviewed. An elegant formalism with extensive use of signed minors was developed for the cancellation of leading inverse Gram determinants.The resulting compact formul...
1109.5682
Alessandro Strumia
Gian F. Giudice, Sergey Sibiryakov, Alessandro Strumia
Interpreting OPERA results on superluminal neutrino
21 pages, 4 figures. Final version to appear on NPB. The electroweak corrections that transfer Lorentz violation from neutrinos to electrons have now been computed finding a result in agreement with the estimate in the first version of the paper
null
10.1016/j.nuclphysb.2012.03.008
CERN-PH-TH/2011--234
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
OPERA has claimed the discovery of superluminal propagation of neutrinos. We analyze the consistency of this claim with previous tests of special relativity. We find that reconciling the OPERA measurement with information from SN1987a and from neutrino oscillations requires stringent conditions. The superluminal limi...
[ { "created": "Mon, 26 Sep 2011 19:36:48 GMT", "version": "v1" }, { "created": "Wed, 14 Mar 2012 15:03:45 GMT", "version": "v2" } ]
2015-05-30
[ [ "Giudice", "Gian F.", "" ], [ "Sibiryakov", "Sergey", "" ], [ "Strumia", "Alessandro", "" ] ]
OPERA has claimed the discovery of superluminal propagation of neutrinos. We analyze the consistency of this claim with previous tests of special relativity. We find that reconciling the OPERA measurement with information from SN1987a and from neutrino oscillations requires stringent conditions. The superluminal limit ...
1901.09091
Ernest Ma
Ernest Ma (UC Riverside)
Scotogenic $U(1)_\chi$ Dirac Neutrinos
10 pages, 2 figures (1 new), minor revisions
null
10.1016/j.physletb.2019.05.006
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The standard model of quarks and leptons is extended to include the gauge symmetry $U(1)_\chi$ which comes from $SO(10) \to SU(5) \times U(1)_\chi$. The radiative generation of Dirac neutrino masses through dark matter is discussed in two examples. One allows for light Dirac fermion dark matter. The other allows for ...
[ { "created": "Fri, 25 Jan 2019 21:35:53 GMT", "version": "v1" }, { "created": "Tue, 5 Mar 2019 21:42:43 GMT", "version": "v2" } ]
2019-05-08
[ [ "Ma", "Ernest", "", "UC Riverside" ] ]
The standard model of quarks and leptons is extended to include the gauge symmetry $U(1)_\chi$ which comes from $SO(10) \to SU(5) \times U(1)_\chi$. The radiative generation of Dirac neutrino masses through dark matter is discussed in two examples. One allows for light Dirac fermion dark matter. The other allows for se...
0810.2706
Tim Gershon
Tim Gershon
On the Measurement of the Unitarity Triangle Angle gamma from B^0 -> DK^{*0} Decays
5 pages, 3 figures. v2 as published
Phys.Rev.D79:051301,2009
10.1103/PhysRevD.79.051301
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The decay B^0 -> DK^{*0} is well-known to provide excellent potential for a precise measurement of the Unitarity Triangle angle gamma in future experiments. It is noted that the sensitivity can be significantly enhanced by studying the amplitudes relative to those of the flavour-specific decay B^0 -> D_2^{*-}K^+, whi...
[ { "created": "Wed, 15 Oct 2008 14:24:50 GMT", "version": "v1" }, { "created": "Fri, 24 Oct 2008 11:44:51 GMT", "version": "v2" }, { "created": "Fri, 20 Mar 2009 14:18:59 GMT", "version": "v3" } ]
2009-03-24
[ [ "Gershon", "Tim", "" ] ]
The decay B^0 -> DK^{*0} is well-known to provide excellent potential for a precise measurement of the Unitarity Triangle angle gamma in future experiments. It is noted that the sensitivity can be significantly enhanced by studying the amplitudes relative to those of the flavour-specific decay B^0 -> D_2^{*-}K^+, which...
hep-ph/0606144
Salah Nasri
K.S. Babu, R.N. Mohapatra and S. Nasri
Post--Sphaleron Baryogenesis
13 pages, 4 figures, typos corrected, references and acknowledgment added
Phys.Rev.Lett.97:131301,2006
10.1103/PhysRevLett.97.131301
null
hep-ph
null
We present a new mechanism for generating the baryon asymmetry of the universe directly in the decay of a singlet scalar field $S_r$ with a weak scale mass and a high dimensional baryon number violating coupling. Unlike most currently popular models, this mechanism, which becomes effective after the electroweak phase...
[ { "created": "Mon, 12 Jun 2006 19:09:53 GMT", "version": "v1" }, { "created": "Tue, 27 Jun 2006 07:00:17 GMT", "version": "v2" } ]
2008-11-26
[ [ "Babu", "K. S.", "" ], [ "Mohapatra", "R. N.", "" ], [ "Nasri", "S.", "" ] ]
We present a new mechanism for generating the baryon asymmetry of the universe directly in the decay of a singlet scalar field $S_r$ with a weak scale mass and a high dimensional baryon number violating coupling. Unlike most currently popular models, this mechanism, which becomes effective after the electroweak phase t...
1311.2614
Pilar Hernandez
P. Hernandez, M. Kekic, J. Lopez-Pavon
Low-scale seesaw models versus $N_{\rm eff}$
Important revision, references added, 13 pages, 5 figures
Phys. Rev. D 89, 073009 (2014)
10.1103/PhysRevD.89.073009
IFIC/13-81, SISSA 50/2013/FISI
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider the contribution of the extra sterile states in generic low-scale seesaw models to extra radiation, parametrized by $N_{\rm eff}$. We find that the value of $N_{\rm eff}$ is roughly independent of the seesaw scale within a wide range. We explore the full parameter space in the case of two extra sterile st...
[ { "created": "Mon, 11 Nov 2013 21:31:09 GMT", "version": "v1" }, { "created": "Wed, 27 Nov 2013 16:52:08 GMT", "version": "v2" } ]
2014-04-23
[ [ "Hernandez", "P.", "" ], [ "Kekic", "M.", "" ], [ "Lopez-Pavon", "J.", "" ] ]
We consider the contribution of the extra sterile states in generic low-scale seesaw models to extra radiation, parametrized by $N_{\rm eff}$. We find that the value of $N_{\rm eff}$ is roughly independent of the seesaw scale within a wide range. We explore the full parameter space in the case of two extra sterile stat...
1009.3590
Stephan Narison
G. Mennessier (CNRS-IN2P3 Montpellier), S. Narison (CNRS-IN2P3 Montpellier), X.-G. Wang (CNRS-IN2P3 Montpellier & Peking University)
The sigma and f_0(980) from K_e4+pi-pi, gamma-gamma scatterings, J/psi, phi to gamma sigma_B and D_s to l nu sigma_B
4 pages, 5 figures, 6 tables, talk given by X.-G. Wang at QCD 10 (25th anniversary) 28th june-2nd july 2010 (Montpellier - FR)
Nucl.Phys.Proc.Suppl.207-208:177-180,2010
10.1016/j.nuclphysbps.2010.10.046
null
hep-ph hep-ex hep-lat nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We extract the pole positions, hadronic and gamma-gamma widths of sigma and f_0(980, from pi-pi and gamma-gamma scattering data using an improved analytic K-matrix model. Our results favour a large gluon component for the sigma and a \bar ss or/and gluon component for the f_0(980) but neither a large four-quark nor a...
[ { "created": "Sat, 18 Sep 2010 22:16:19 GMT", "version": "v1" } ]
2011-02-15
[ [ "Mennessier", "G.", "", "CNRS-IN2P3 Montpellier" ], [ "Narison", "S.", "", "CNRS-IN2P3\n Montpellier" ], [ "Wang", "X. -G.", "", "CNRS-IN2P3 Montpellier & Peking University" ] ]
We extract the pole positions, hadronic and gamma-gamma widths of sigma and f_0(980, from pi-pi and gamma-gamma scattering data using an improved analytic K-matrix model. Our results favour a large gluon component for the sigma and a \bar ss or/and gluon component for the f_0(980) but neither a large four-quark nor a m...
hep-ph/9706447
David A. Kosower
Zvi Bern (UCLA), Lance Dixon (SLAC), David C. Dunbar (Swansea), David A. Kosower (Saclay)
Advanced Techniques for Multiparton Loop Calculations: A Minireview
5 pages, LaTeX/aipproc, presented at DIS '97, Chicago, IL, April 14-18, 1997
null
10.1063/1.53730
Saclay-SPhT/T97-62
hep-ph
null
We present an overview of techniques developed in recent years for the efficient calculation of one-loop multiparton amplitudes, in particular those relying on unitarity and collinear factorization.
[ { "created": "Sun, 22 Jun 1997 06:31:46 GMT", "version": "v1" } ]
2009-10-30
[ [ "Bern", "Zvi", "", "UCLA" ], [ "Dixon", "Lance", "", "SLAC" ], [ "Dunbar", "David C.", "", "Swansea" ], [ "Kosower", "David A.", "", "Saclay" ] ]
We present an overview of techniques developed in recent years for the efficient calculation of one-loop multiparton amplitudes, in particular those relying on unitarity and collinear factorization.
hep-ph/0107004
Christian Y. Cardall
Christian Y. Cardall
Theory of Neutrino Flavor Mixing
18 pages. Written contribution to the proceedings of ``Frontiers of Contemporary Physics--II,'' held March 5-10, 2001 at Vanderbilt University, Nashville, Tennessee
null
null
null
hep-ph
null
The depth of our theoretical understanding of neutrino flavor mixing should match the importance of this phenomenon as a herald of long-awaited empirical challenges to the standard model of particle physics. After reviewing the familiar, simplified quantum mechanical model and its flaws, I sketch the deeper understan...
[ { "created": "Sat, 30 Jun 2001 20:11:24 GMT", "version": "v1" } ]
2007-05-23
[ [ "Cardall", "Christian Y.", "" ] ]
The depth of our theoretical understanding of neutrino flavor mixing should match the importance of this phenomenon as a herald of long-awaited empirical challenges to the standard model of particle physics. After reviewing the familiar, simplified quantum mechanical model and its flaws, I sketch the deeper understandi...
1512.03136
Cesar Fernandez-Ramirez
Cesar Fernandez-Ramirez, Igor V. Danilkin, Vincent Mathieu, Adam P. Szczepaniak
Understanding the Nature of $\Lambda (1405)$ through Regge Physics
null
Phys. Rev. D 93, 074015 (2016)
10.1103/PhysRevD.93.074015
JLAB-THY-15-2182
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
It appears that there are two resonances with $J^P= 1/2^-$ quantum numbers in the energy region near the $\Lambda(1405)$ hyperon. The nature of these states is a topic of current debate. To provide further insight we use Regge phenomenology to access how these two resonances fit the established hyperon spectrum. We f...
[ { "created": "Thu, 10 Dec 2015 04:30:52 GMT", "version": "v1" }, { "created": "Wed, 13 Apr 2016 22:45:44 GMT", "version": "v2" } ]
2016-04-20
[ [ "Fernandez-Ramirez", "Cesar", "" ], [ "Danilkin", "Igor V.", "" ], [ "Mathieu", "Vincent", "" ], [ "Szczepaniak", "Adam P.", "" ] ]
It appears that there are two resonances with $J^P= 1/2^-$ quantum numbers in the energy region near the $\Lambda(1405)$ hyperon. The nature of these states is a topic of current debate. To provide further insight we use Regge phenomenology to access how these two resonances fit the established hyperon spectrum. We fin...
hep-ph/9706417
D. I. Melikhov
Dmitri Melikhov
Heavy quark expansion and universal form factors in quark model
revtex, 20 pages, 3 figure
Phys.Rev. D56 (1997) 7089-7104
10.1103/PhysRevD.56.7089
null
hep-ph
null
Meson transition amplitudes of the vector, axial-vector, and tensor quark currents are analyzed within dispersion formulation of the constituent quark model. The form factors in the decay region are given by relativistic double spectral representations through the wave functions of the inital and final mesons. We per...
[ { "created": "Thu, 19 Jun 1997 14:53:20 GMT", "version": "v1" } ]
2009-10-30
[ [ "Melikhov", "Dmitri", "" ] ]
Meson transition amplitudes of the vector, axial-vector, and tensor quark currents are analyzed within dispersion formulation of the constituent quark model. The form factors in the decay region are given by relativistic double spectral representations through the wave functions of the inital and final mesons. We perfo...
hep-ph/9911361
Oscar Alfredo Sampayo
A. Guti\'errez-Rodr\'iguez and O. A. Sampayo
Detection of Charged MSSM Higgs Bosons at CERN LEP-II and NLC
Latex file and 5 figures
null
null
null
hep-ph
null
We study the possibility of detecting the charged Higgs bosons predicted in the Minimal Supersymmetric Standard Model $(H^\pm)$, with the reactions $e^{+}e^{-}\to \tau^-\bar \nu_{\tau}H^+, \tau^+\nu_\tau H^-$, using the helicity formalism. We analyze the region of parameter space $(m_{A^0}-\tan\beta)$ where $H^\pm$ c...
[ { "created": "Mon, 15 Nov 1999 16:24:06 GMT", "version": "v1" } ]
2016-08-15
[ [ "Gutiérrez-Rodríguez", "A.", "" ], [ "Sampayo", "O. A.", "" ] ]
We study the possibility of detecting the charged Higgs bosons predicted in the Minimal Supersymmetric Standard Model $(H^\pm)$, with the reactions $e^{+}e^{-}\to \tau^-\bar \nu_{\tau}H^+, \tau^+\nu_\tau H^-$, using the helicity formalism. We analyze the region of parameter space $(m_{A^0}-\tan\beta)$ where $H^\pm$ cou...
0708.1121
Markus Diehl
M. Diehl and W. Kugler
Next-to-leading order corrections in exclusive meson production
50 pages, 34 figures
Eur.Phys.J.C52:933-966,2007
10.1140/epjc/s10052-007-0423-3
DESY 07-117
hep-ph
null
We analyze in detail the size of next-to-leading order corrections to hard exclusive meson production within the collinear factorization approach. Corrections to the cross section are found to be huge at small xB and substantial in typical fixed-target kinematics. With the models we take for nucleon helicity-flip dis...
[ { "created": "Wed, 8 Aug 2007 11:59:29 GMT", "version": "v1" } ]
2008-11-26
[ [ "Diehl", "M.", "" ], [ "Kugler", "W.", "" ] ]
We analyze in detail the size of next-to-leading order corrections to hard exclusive meson production within the collinear factorization approach. Corrections to the cross section are found to be huge at small xB and substantial in typical fixed-target kinematics. With the models we take for nucleon helicity-flip distr...
2012.02862
Ephraim Fischbach
Ephraim Fischbach, John T. Gruenwald, Dennis E. Krause, Megan H. McDuffie, Michael J. Mueterthies, Carol Y. Scarlett
Significance of Composition-Dependent Effects in Fifth-Force Searches
7 pages, 3 figures, minor changes and corrections to match published version
Physics Letters A 399 (2021) 127300
10.1016/j.physleta.2021.127300
null
hep-ph gr-qc
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Indications of a possible composition-dependent fifth force, based on a reanalysis of the E\"{o}tv\"{o}s experiment, have not been supported by a number of modern experiments. Here, we argue that searching for a composition-dependent fifth force necessarily requires data from experiments in which the acceleration dif...
[ { "created": "Fri, 4 Dec 2020 21:32:33 GMT", "version": "v1" }, { "created": "Mon, 22 Mar 2021 19:55:09 GMT", "version": "v2" } ]
2021-03-24
[ [ "Fischbach", "Ephraim", "" ], [ "Gruenwald", "John T.", "" ], [ "Krause", "Dennis E.", "" ], [ "McDuffie", "Megan H.", "" ], [ "Mueterthies", "Michael J.", "" ], [ "Scarlett", "Carol Y.", "" ] ]
Indications of a possible composition-dependent fifth force, based on a reanalysis of the E\"{o}tv\"{o}s experiment, have not been supported by a number of modern experiments. Here, we argue that searching for a composition-dependent fifth force necessarily requires data from experiments in which the acceleration diffe...
2204.03050
Kazem Azizi
H. Mutuk, K. Azizi
Investigation of $\Delta^0\Delta^0$ dibaryon in QCD
9 Pages, 2 Figures and 1 Table
null
10.1103/PhysRevD.105.094021
null
hep-ph hep-ex hep-lat
http://creativecommons.org/licenses/by/4.0/
We study a hypothetical $\Delta^0\Delta^0$ dibaryon state by means of QCD sum rule method. We construct a scalar interpolating current to extract the mass and decay constant of this state taking into account contributions of various quark, gluon and mixed vacuum condensates. The predictions for the mass and decay con...
[ { "created": "Wed, 6 Apr 2022 19:26:09 GMT", "version": "v1" }, { "created": "Mon, 2 May 2022 19:42:49 GMT", "version": "v2" }, { "created": "Sat, 14 May 2022 05:22:30 GMT", "version": "v3" } ]
2022-06-01
[ [ "Mutuk", "H.", "" ], [ "Azizi", "K.", "" ] ]
We study a hypothetical $\Delta^0\Delta^0$ dibaryon state by means of QCD sum rule method. We construct a scalar interpolating current to extract the mass and decay constant of this state taking into account contributions of various quark, gluon and mixed vacuum condensates. The predictions for the mass and decay const...
1208.0773
Antonio Di Domenico
J. Bernabeu, A. Di Domenico, P. Villanueva-Perez
Direct test of time-reversal symmetry in the entangled neutral kaon system at a $\phi$-factory
null
null
10.1016/j.nuclphysb.2012.11.009
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a novel method to perform a direct T (time reversal) symmetry test in the neutral kaon system, independent of any CP and/or CPT symmetry tests. This is based on the comparison of suitable transition probabilities, where the required interchange of in <-> out states for a given process is obtained exploitin...
[ { "created": "Fri, 3 Aug 2012 15:39:33 GMT", "version": "v1" }, { "created": "Mon, 20 Aug 2012 20:23:26 GMT", "version": "v2" } ]
2015-06-11
[ [ "Bernabeu", "J.", "" ], [ "Di Domenico", "A.", "" ], [ "Villanueva-Perez", "P.", "" ] ]
We present a novel method to perform a direct T (time reversal) symmetry test in the neutral kaon system, independent of any CP and/or CPT symmetry tests. This is based on the comparison of suitable transition probabilities, where the required interchange of in <-> out states for a given process is obtained exploiting ...
hep-ph/9503494
Tamas Csorgo
T. Csorgo and B. Lorstad
Bose-Einstein Correlations for Expanding Finite Systems
5 pages, no figures, ReVTeX, uses espcrc1.sty, Quark Matter'95 conference, Nucl. Phys. A in press
Nucl.Phys. A590 (1995) 465c-468c
10.1016/0375-9474(95)00255-Y
CU-TP-684, LUNFD6/(NFFL-7106) 1995
hep-ph nucl-th
null
There are two length-scales present simultaneously in all the principal directions for three-dimensionally expanding, finite systems. These are discussed in detail for the case of a longitudinally expanding system with a transverse flow and a transverse temperature profile. For systems with large geometrical sizes we...
[ { "created": "Sun, 2 Apr 1995 14:34:56 GMT", "version": "v1" } ]
2009-10-28
[ [ "Csorgo", "T.", "" ], [ "Lorstad", "B.", "" ] ]
There are two length-scales present simultaneously in all the principal directions for three-dimensionally expanding, finite systems. These are discussed in detail for the case of a longitudinally expanding system with a transverse flow and a transverse temperature profile. For systems with large geometrical sizes we f...
hep-ph/9909293
James M. Gelb
James M. Gelb (U.T. Arlington), S. P. Rosen (DOE)
A Mass Matrix for Atmospheric, Solar, and LSND Neutrino Oscillations
4 pages, 0 figures, minor text changes
Phys.Rev.D62:013003,2000
10.1103/PhysRevD.62.013003
null
hep-ph
null
We construct a mass matrix for the four neutrino flavors, three active and one sterile, needed to fit oscillations in all three neutrino experiments: atmospheric, solar, and LSND, simultaneously. It organizes the neutrinos into two doublets whose central values are about 1 eV apart, and whose splittings are of the or...
[ { "created": "Wed, 8 Sep 1999 16:13:52 GMT", "version": "v1" }, { "created": "Mon, 15 Nov 1999 22:14:41 GMT", "version": "v2" }, { "created": "Thu, 24 Feb 2000 17:50:17 GMT", "version": "v3" } ]
2011-02-07
[ [ "Gelb", "James M.", "", "U.T. Arlington" ], [ "Rosen", "S. P.", "", "DOE" ] ]
We construct a mass matrix for the four neutrino flavors, three active and one sterile, needed to fit oscillations in all three neutrino experiments: atmospheric, solar, and LSND, simultaneously. It organizes the neutrinos into two doublets whose central values are about 1 eV apart, and whose splittings are of the orde...
1607.03939
Patricia Magalh\~aes
J.H. Alvarenga Nogueira, I. Bediaga, T. Frederico, P.C. Magalh\~aes, J. Molina Rodriguez
Suppressed $B \to PV $ CP asymmetry: CPT constraint
final version
Phys. Rev. D 94, 054028 (2016)
10.1103/PhysRevD.94.054028
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Charge Parity asymmetry in charmless B meson decays is a key issue to be understood. Many theoretical calculations have been performed using short distance factorization approaches which, in general, do not take into account the CPT invariance constraint. For each channel with CP violation there is an equal amount of...
[ { "created": "Wed, 13 Jul 2016 21:37:06 GMT", "version": "v1" }, { "created": "Tue, 1 Nov 2016 18:23:45 GMT", "version": "v2" } ]
2016-11-02
[ [ "Nogueira", "J. H. Alvarenga", "" ], [ "Bediaga", "I.", "" ], [ "Frederico", "T.", "" ], [ "Magalhães", "P. C.", "" ], [ "Rodriguez", "J. Molina", "" ] ]
Charge Parity asymmetry in charmless B meson decays is a key issue to be understood. Many theoretical calculations have been performed using short distance factorization approaches which, in general, do not take into account the CPT invariance constraint. For each channel with CP violation there is an equal amount of C...
1509.02077
Gionata Luisoni
Hans van Deurzen, Rikkert Frederix, Valentin Hirschi, Gionata Luisoni, Pierpaolo Mastrolia, Giovanni Ossola
Spin Polarisation of $t\bar{t}\gamma\gamma$ production at NLO+PS with GoSam interfaced to MadGraph5_aMC@NLO
18 pages, 15 figures, 2 tables. Version published on EPJC
Eur. Phys. J. C (2016) 76: 221
10.1140/epjc/s10052-016-4048-2
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present an interface between the multipurpose NLO Monte Carlo tool MadGraph5_aMC@NLO and the automated one-loop amplitude generator GoSam. As a first application of this novel framework, we compute the NLO corrections to $pp \to t\bar{t}H$ and $pp \to t\bar{t}\gamma\gamma$ matched to a parton shower. In the phenom...
[ { "created": "Mon, 7 Sep 2015 15:27:35 GMT", "version": "v1" }, { "created": "Thu, 16 Jun 2016 20:50:00 GMT", "version": "v2" }, { "created": "Tue, 18 Jul 2017 14:09:55 GMT", "version": "v3" } ]
2017-07-19
[ [ "van Deurzen", "Hans", "" ], [ "Frederix", "Rikkert", "" ], [ "Hirschi", "Valentin", "" ], [ "Luisoni", "Gionata", "" ], [ "Mastrolia", "Pierpaolo", "" ], [ "Ossola", "Giovanni", "" ] ]
We present an interface between the multipurpose NLO Monte Carlo tool MadGraph5_aMC@NLO and the automated one-loop amplitude generator GoSam. As a first application of this novel framework, we compute the NLO corrections to $pp \to t\bar{t}H$ and $pp \to t\bar{t}\gamma\gamma$ matched to a parton shower. In the phenomen...
hep-ph/0008109
Thorsten Renk
T. Renk, G. Piller and W. Weise (TU Munich)
Coherence Effects in Diffractive Electroproduction of rho Mesons from Nuclei
21 pages, 8 figures, accepted for publication in Nuclear Physics A
Nucl.Phys. A689 (2001) 869-888
10.1016/S0375-9474(00)00700-4
TUM/T39-00-7
hep-ph
null
A systematic multiple scattering formalism for vector meson electroproduction from nuclei is developed, with emphasis on the formation, propagation and hadronization scales for quark-gluon fluctuations of the virtual high-energy photon. The theory is compared to HERMES measurements of rho electroproduction on 14N. Th...
[ { "created": "Fri, 11 Aug 2000 09:42:07 GMT", "version": "v1" }, { "created": "Fri, 8 Dec 2000 09:58:50 GMT", "version": "v2" } ]
2009-10-31
[ [ "Renk", "T.", "", "TU Munich" ], [ "Piller", "G.", "", "TU Munich" ], [ "Weise", "W.", "", "TU Munich" ] ]
A systematic multiple scattering formalism for vector meson electroproduction from nuclei is developed, with emphasis on the formation, propagation and hadronization scales for quark-gluon fluctuations of the virtual high-energy photon. The theory is compared to HERMES measurements of rho electroproduction on 14N. The ...
2211.12920
Yugen Lin
Yu Gao, Yu Jia, Yugen Lin, Jia-Yue Zhang
New Physics Opportunities in Triangle Singularity
5 pages, 3 figures
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We show that loop-induced processes involving new physics particles can readily satisfy Landau Equation and trigger triangular singularities at high energy colliders, leading to fully visible Standard Model final states. Four-particle vertices in new physics allow triangular singularity diagrams to evade large virtua...
[ { "created": "Wed, 23 Nov 2022 12:49:11 GMT", "version": "v1" } ]
2022-11-24
[ [ "Gao", "Yu", "" ], [ "Jia", "Yu", "" ], [ "Lin", "Yugen", "" ], [ "Zhang", "Jia-Yue", "" ] ]
We show that loop-induced processes involving new physics particles can readily satisfy Landau Equation and trigger triangular singularities at high energy colliders, leading to fully visible Standard Model final states. Four-particle vertices in new physics allow triangular singularity diagrams to evade large virtuali...
2205.06712
Thomas Rink
Thomas Rink
Coherent elastic neutrino-nucleus scattering -- First constraints/observations and future potential
Contribution to the 2022 Electroweak session of the 56th Rencontres de Moriond; v2: footnote added, references updated
null
null
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
The detection of coherent elastic neutrino-nucleus scattering (CE$\nu$NS) opens new possibilities for neutrino physics within and beyond the Standard Model. Following the initial discovery in 2017, several experimental attempts have emerged allowing this reaction channel to be studied with the full repertoire of mode...
[ { "created": "Fri, 13 May 2022 15:33:14 GMT", "version": "v1" }, { "created": "Mon, 9 Jan 2023 10:34:46 GMT", "version": "v2" } ]
2023-01-10
[ [ "Rink", "Thomas", "" ] ]
The detection of coherent elastic neutrino-nucleus scattering (CE$\nu$NS) opens new possibilities for neutrino physics within and beyond the Standard Model. Following the initial discovery in 2017, several experimental attempts have emerged allowing this reaction channel to be studied with the full repertoire of modern...
1212.6154
Sergio Pastor
Julien Lesgourgues, Sergio Pastor
Neutrino mass from Cosmology
Invited Review article for the Special Issue on Neutrino Physics, 35 pages
Adv. High Energy Phys. 2012 (2012) 608515
10.1155/2012/608515
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Neutrinos can play an important role in the evolution of the Universe, modifying some of the cosmological observables. In this contribution we summarize the main aspects of cosmological relic neutrinos and we describe how the precision of present cosmological data can be used to learn about neutrino properties, in pa...
[ { "created": "Wed, 26 Dec 2012 10:29:45 GMT", "version": "v1" } ]
2012-12-27
[ [ "Lesgourgues", "Julien", "" ], [ "Pastor", "Sergio", "" ] ]
Neutrinos can play an important role in the evolution of the Universe, modifying some of the cosmological observables. In this contribution we summarize the main aspects of cosmological relic neutrinos and we describe how the precision of present cosmological data can be used to learn about neutrino properties, in part...
hep-ph/9302236
Quevedo
Luis E. Ibanez and Fernando Quevedo
Baryon Asymmetry, Supersymmetry and Gravitational Anomalies
8 pages,FTUAM-93-07 NEIP93-001, harvmac
null
10.1111/j.1749-6632.1993.tb43923.x
null
hep-ph
null
We discuss two independent issues about the baryon asymmetry of the universe. First, assuming that it is generated by an unspecified source at high temperatures, we study the effects of non-perturbative $SU(2)_W$ dynamics above the electroweak scale, in the context of supersymmetric models. We find that there is a su...
[ { "created": "Tue, 9 Feb 1993 09:49:12 GMT", "version": "v1" } ]
2009-10-22
[ [ "Ibanez", "Luis E.", "" ], [ "Quevedo", "Fernando", "" ] ]
We discuss two independent issues about the baryon asymmetry of the universe. First, assuming that it is generated by an unspecified source at high temperatures, we study the effects of non-perturbative $SU(2)_W$ dynamics above the electroweak scale, in the context of supersymmetric models. We find that there is a subs...
1310.0820
David Nolde
David Nolde
Effects of the imaginary inflaton component in supergravity new inflation
15 pages, 4 figures
JCAP11(2013)028
10.1088/1475-7516/2013/11/028
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
When models of new inflation are implemented in supergravity, the inflaton is a complex and not a real scalar field. As a complex scalar field has two independent components, supergravity models of new inflation are naturally two-field models. In this paper, we use the delta N formalism to analyse how the two-field b...
[ { "created": "Wed, 2 Oct 2013 20:00:02 GMT", "version": "v1" }, { "created": "Tue, 12 Nov 2013 15:26:42 GMT", "version": "v2" } ]
2013-11-13
[ [ "Nolde", "David", "" ] ]
When models of new inflation are implemented in supergravity, the inflaton is a complex and not a real scalar field. As a complex scalar field has two independent components, supergravity models of new inflation are naturally two-field models. In this paper, we use the delta N formalism to analyse how the two-field beh...
1407.0546
Andreas Ringwald
A. Ringwald
Axions and Axion-Like Particles
8 pages, 2 figures, invited review talk at the Rencontres de Moriond EW 2014, 15-22 March 2014, La Thuile, Italy
null
null
DESY 14-108
hep-ph astro-ph.CO astro-ph.HE
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The physics case for axions and axion-like particles is reviewed and an overview of ongoing and near-future laboratory searches is presented.
[ { "created": "Wed, 2 Jul 2014 12:53:08 GMT", "version": "v1" } ]
2014-07-03
[ [ "Ringwald", "A.", "" ] ]
The physics case for axions and axion-like particles is reviewed and an overview of ongoing and near-future laboratory searches is presented.
hep-ph/9701230
Xuemin Jin
Xuemin Jin and Jian Tang
Chirality and Reliability of Baryon QCD Sum Rules
8 pages, ReVTeX, one figure embedded
Phys.Rev. D56 (1997) 515-518
10.1103/PhysRevD.56.515
MIT-CTP-2601
hep-ph nucl-th
null
The QCD sum-rule method has been widely used in studying various baryon properties. For a given problem, there are usually more than one sum rules and they do not work equally well. In this paper, we point out that chirality plays an important role in determining the reliability of a baryon sum rule. The contribution...
[ { "created": "Mon, 6 Jan 1997 21:44:18 GMT", "version": "v1" } ]
2009-10-30
[ [ "Jin", "Xuemin", "" ], [ "Tang", "Jian", "" ] ]
The QCD sum-rule method has been widely used in studying various baryon properties. For a given problem, there are usually more than one sum rules and they do not work equally well. In this paper, we point out that chirality plays an important role in determining the reliability of a baryon sum rule. The contributions ...
hep-ph/0311097
Karol Kolodziej
Adam Biernacik, Karol Kolodziej, Alejandro Lorca and Tord Riemann
Towards high precision predictions for top quark pair production and decay at a linear collider
8 pages, 3 figures, presented by K. Kolodziej at the XXVII International Coference of Theoretical Physics "Matter to the Deepest: Recent Developments in Physics of Fundamental Interactions", Ustron, Poland, September 15-21, 2003. Changes in V2: Eqs.(8) corrected, reference 3 updated, style revtex used
Acta Phys.Polon. B34 (2003) 5487-5496
null
DESY 03-178, SFB/CPP-03-53
hep-ph
null
We report on the progress in work on improving precision of the standard model theoretical predictions for the top quark pair production and decay into six fermions at a linear collider. Two programs have been combined into a single Monte Carlo program: 'eett6f', a MC program for e+e- -> 6f, and 'topfit', a program f...
[ { "created": "Fri, 7 Nov 2003 14:30:45 GMT", "version": "v1" }, { "created": "Fri, 30 Sep 2005 15:43:23 GMT", "version": "v2" } ]
2016-09-06
[ [ "Biernacik", "Adam", "" ], [ "Kolodziej", "Karol", "" ], [ "Lorca", "Alejandro", "" ], [ "Riemann", "Tord", "" ] ]
We report on the progress in work on improving precision of the standard model theoretical predictions for the top quark pair production and decay into six fermions at a linear collider. Two programs have been combined into a single Monte Carlo program: 'eett6f', a MC program for e+e- -> 6f, and 'topfit', a program for...
1508.01948
Clara Peset
Clara Peset and Antonio Pineda
The Lamb shift in muonic hydrogen and the proton radius from effective field theories
34 pages, 8 figures, 1 table, 1 appendix. Minor corrections, references added. Replaced to meet journal version
null
10.1140/epja/i2015-15156-2
null
hep-ph nucl-th physics.atom-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We comprehensively analyse the theoretical prediction for the Lamb shift in muonic hydrogen, and the associated determination of the proton radius. We use effective field theories. This allows us to relate the proton radius with well-defined objects in quantum field theory, eliminating unnecessary model dependence. T...
[ { "created": "Sat, 8 Aug 2015 19:56:12 GMT", "version": "v1" }, { "created": "Tue, 1 Dec 2015 10:12:01 GMT", "version": "v2" } ]
2016-01-20
[ [ "Peset", "Clara", "" ], [ "Pineda", "Antonio", "" ] ]
We comprehensively analyse the theoretical prediction for the Lamb shift in muonic hydrogen, and the associated determination of the proton radius. We use effective field theories. This allows us to relate the proton radius with well-defined objects in quantum field theory, eliminating unnecessary model dependence. The...
1612.05934
Wen-Fei Wang
Ya Li, Ai-Jun Ma, Zhen-Jun Xiao and Wen-Fei Wang
Quasi-two-body decays $B_{(s)}\to P\rho\to P\pi\pi$ in perturbative QCD approach
13 pages, 1 figure
Phys. Rev. D 95, 056008 (2017)
10.1103/PhysRevD.95.056008
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this work, we calculate the $CP$-averaged branching ratios and the direct $CP$-violating asymmetries of the quasi-two-body decays $B_{(s)} \to P (\rho \to) \pi\pi$ by employing the perturbative QCD (PQCD) approach (here $P$ stands for a light pseudoscalar meson $\pi, K, \eta$ or $\eta^{\prime}$). The vector curren...
[ { "created": "Sun, 18 Dec 2016 15:41:03 GMT", "version": "v1" }, { "created": "Fri, 23 Dec 2016 06:13:23 GMT", "version": "v2" }, { "created": "Tue, 7 Mar 2017 09:17:28 GMT", "version": "v3" } ]
2017-09-14
[ [ "Li", "Ya", "" ], [ "Ma", "Ai-Jun", "" ], [ "Xiao", "Zhen-Jun", "" ], [ "Wang", "Wen-Fei", "" ] ]
In this work, we calculate the $CP$-averaged branching ratios and the direct $CP$-violating asymmetries of the quasi-two-body decays $B_{(s)} \to P (\rho \to) \pi\pi$ by employing the perturbative QCD (PQCD) approach (here $P$ stands for a light pseudoscalar meson $\pi, K, \eta$ or $\eta^{\prime}$). The vector current ...
2311.04988
Eamonn Weitz
Eamonn Weitz
Theoretical Developments for Jets in Heavy-Ion Collisions
PhD thesis, SUBATECH, Nantes Universit\'e, 144 pages
null
null
null
hep-ph nucl-th
http://creativecommons.org/licenses/by/4.0/
The quark-gluon plasma (QGP) is an exotic phase of matter, composed of deconfined quarks and gluons and is briefly created in heavy-ion collisions (HIC) at the LHC and at the RHIC. High-energy, self-collimated structures of final-state particles also created in HIC, called jets, probe the QGP, piercing through it on ...
[ { "created": "Wed, 8 Nov 2023 19:06:28 GMT", "version": "v1" } ]
2023-11-10
[ [ "Weitz", "Eamonn", "" ] ]
The quark-gluon plasma (QGP) is an exotic phase of matter, composed of deconfined quarks and gluons and is briefly created in heavy-ion collisions (HIC) at the LHC and at the RHIC. High-energy, self-collimated structures of final-state particles also created in HIC, called jets, probe the QGP, piercing through it on th...
1605.05718
Diego Guadagnoli
Diego Guadagnoli, Dmitri Melikhov and Meril Reboud
More Lepton Flavor Violating Observables for LHCb's Run 2
14 pages, 2 figures. v4: some typos corrected. Such corrections are not implemented in the journal version
null
10.1016/j.physletb.2016.07.028
LAPTH-023/16
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The R_K measurement by LHCb suggests non-standard lepton non-universality (LNU) to occur in b -> s l+ l- transitions, with effects in muons rather than electrons. A number of other measurements of b -> s l+ l- transitions by LHCb and B-factories display disagreement with the SM predictions and, remarkably, these disc...
[ { "created": "Wed, 18 May 2016 19:45:56 GMT", "version": "v1" }, { "created": "Thu, 26 May 2016 07:59:15 GMT", "version": "v2" }, { "created": "Wed, 20 Jul 2016 15:13:34 GMT", "version": "v3" }, { "created": "Fri, 14 Oct 2016 08:04:29 GMT", "version": "v4" } ]
2016-10-17
[ [ "Guadagnoli", "Diego", "" ], [ "Melikhov", "Dmitri", "" ], [ "Reboud", "Meril", "" ] ]
The R_K measurement by LHCb suggests non-standard lepton non-universality (LNU) to occur in b -> s l+ l- transitions, with effects in muons rather than electrons. A number of other measurements of b -> s l+ l- transitions by LHCb and B-factories display disagreement with the SM predictions and, remarkably, these discre...
1608.01991
Oleksandr Koshchii
O. Koshchii, A. Afanasev
Contribution of \sigma-meson exchange to elastic lepton-proton scattering
8 pages, 5 figures, minor corrections
Phys. Rev. D 94, 116007 (2016)
10.1103/PhysRevD.94.116007
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Lepton mass effects play a decisive role in description of elastic lepton-proton scattering when the beam's energy is comparable to the mass of the lepton. The future MUSE experiment, which is devised to solve the "Proton Radius Puzzle", is going to cover the corresponding kinematic region for a scattering of muons b...
[ { "created": "Sat, 6 Aug 2016 21:36:11 GMT", "version": "v1" }, { "created": "Mon, 12 Dec 2016 22:39:08 GMT", "version": "v2" } ]
2016-12-14
[ [ "Koshchii", "O.", "" ], [ "Afanasev", "A.", "" ] ]
Lepton mass effects play a decisive role in description of elastic lepton-proton scattering when the beam's energy is comparable to the mass of the lepton. The future MUSE experiment, which is devised to solve the "Proton Radius Puzzle", is going to cover the corresponding kinematic region for a scattering of muons by ...
2212.06535
Pengyu Niu
PengYu Niu, Zhenyu Zhang, Qian Wang and Meng-Lin Du
The third peak structure in the double $J/\psi$ spectrum
15 pages, 5 figures; accepted by Science Bulletin
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Recently, the CMS and ATLAS collaborations have reported their $J/\psi J/\psi $ and $J/\psi \psi^\prime$ invariant mass distributions, respectively, for searching for fully charmed tetraquarks. Both of them reported the existence of a peak structure around $7.2~\gev$. In this article, we exhibit the role of the $\eta...
[ { "created": "Tue, 13 Dec 2022 12:40:27 GMT", "version": "v1" }, { "created": "Tue, 11 Apr 2023 12:51:37 GMT", "version": "v2" } ]
2023-04-12
[ [ "Niu", "PengYu", "" ], [ "Zhang", "Zhenyu", "" ], [ "Wang", "Qian", "" ], [ "Du", "Meng-Lin", "" ] ]
Recently, the CMS and ATLAS collaborations have reported their $J/\psi J/\psi $ and $J/\psi \psi^\prime$ invariant mass distributions, respectively, for searching for fully charmed tetraquarks. Both of them reported the existence of a peak structure around $7.2~\gev$. In this article, we exhibit the role of the $\eta_c...
2209.01058
Per Grafstrom
Per Grafstrom
Comments on low mass dissociation at the LHC in the context of the discrepancy between the ATLAS and TOTEM measurements of $\sigma_{tot}$
11 pages, 5 figures
null
null
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The cross section for low mass dissociation at LHC energies is estimated in a partly data driven approach. The result is compared to the Monte Carlo estimate from the QGSJET-II-03 model used by the TOTEM experiment in the determination of $\sigma_{tot}$ via the luminosity-independent method. Significant differences a...
[ { "created": "Fri, 2 Sep 2022 13:50:19 GMT", "version": "v1" } ]
2022-09-05
[ [ "Grafstrom", "Per", "" ] ]
The cross section for low mass dissociation at LHC energies is estimated in a partly data driven approach. The result is compared to the Monte Carlo estimate from the QGSJET-II-03 model used by the TOTEM experiment in the determination of $\sigma_{tot}$ via the luminosity-independent method. Significant differences are...
hep-ph/9902426
Marco Stratmann
S. Kretzer (Dortmund Univ.), M. Stratmann (Durham Univ.)
Next-to-Leading Order QCD Corrections to Charged Current Charm Production and the Unpolarized and Polarized Strange Sea at HERA
34 pages, LaTeX, 7 eps figures, uses amssymb, axodraw (included) and epsfig styles
Eur.Phys.J.C10:107-119,1999
10.1007/s100529900116
DO-TH 99/02, DTP/99/16
hep-ph
null
Charged current charm and D meson production is studied in detail as a means of determining the unpolarized and polarized strange sea densities at HERA. All analyses are performed in next-to-leading order QCD, including a calculation of the so far unknown spin-dependent MSbar coefficient functions up to O(alpha_s). I...
[ { "created": "Mon, 22 Feb 1999 15:47:29 GMT", "version": "v1" } ]
2011-09-13
[ [ "Kretzer", "S.", "", "Dortmund Univ." ], [ "Stratmann", "M.", "", "Durham Univ." ] ]
Charged current charm and D meson production is studied in detail as a means of determining the unpolarized and polarized strange sea densities at HERA. All analyses are performed in next-to-leading order QCD, including a calculation of the so far unknown spin-dependent MSbar coefficient functions up to O(alpha_s). It ...