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hep-ph/0009210
Tri Nang Pham
Claudia Isola and T. N. Pham
Analysis of $B \to K\pi$ decays with small elastic final state interactions
LaTeX, with ReVTeX, 15 pages, 3 figures, correct header title, misprint in the abstract removed
null
null
CPHT-S 085.0900
hep-ph
null
An analysis of $B \to K\pi$ decays is given, assuming a small elastic $\pi K $ rescattering phase difference.Using factorization model only for the tree-level and electroweak penguin amplitudes, we show that the strong penguin amplitude, its absorptive part and the CP-violation weak phase $\gamma$ can be obtained fro...
[ { "created": "Mon, 18 Sep 2000 15:01:29 GMT", "version": "v1" }, { "created": "Tue, 19 Sep 2000 20:24:18 GMT", "version": "v2" } ]
2007-05-23
[ [ "Isola", "Claudia", "" ], [ "Pham", "T. N.", "" ] ]
An analysis of $B \to K\pi$ decays is given, assuming a small elastic $\pi K $ rescattering phase difference.Using factorization model only for the tree-level and electroweak penguin amplitudes, we show that the strong penguin amplitude, its absorptive part and the CP-violation weak phase $\gamma$ can be obtained from ...
hep-ph/9905357
Norma Mankoc-Borstnik
Norma Mankoc Borstnik, Holger Bech Nielsen and Colin Froggatt
What comes beyond the standard model?
Latex, 80 pages, Proceedings to the Workshop at Bled, Slovenia, 29 June - 9 July 1998. Published as a Proceedings by DMFA - Zaloznistvo, Ljubljana, Slovenia
null
null
null
hep-ph
null
The Proceedings collects the results of ten days of discussions on the open questions of the Standard electroweak model as well as the review of the introductory talks, connected with the discussions.
[ { "created": "Sun, 16 May 1999 16:47:46 GMT", "version": "v1" } ]
2007-05-23
[ [ "Borstnik", "Norma Mankoc", "" ], [ "Nielsen", "Holger Bech", "" ], [ "Froggatt", "Colin", "" ] ]
The Proceedings collects the results of ten days of discussions on the open questions of the Standard electroweak model as well as the review of the introductory talks, connected with the discussions.
0802.0669
Vadim Guzey
K. Goeke (Ruhr U., Bochum), V. Guzey (Jefferson Lab), M. Siddikov (Ruhr U., Bochum & Uzbekistan Natl. U.)
Deeply Virtual Compton Scattering on nucleons and nuclei in generalized vector meson dominance model
25 pages, 9 figures, 1 table
Eur.Phys.J.A36:49-60,2008
10.1140/epja/i2008-10549-x
JLAB-THY-08-774
hep-ph hep-ex nucl-th
http://creativecommons.org/licenses/publicdomain/
We consider Deeply Virtual Compton Scattering (DVCS) on nucleons and nuclei in the framework of generalized vector meson dominance (GVMD) model. We demonstrate that the GVMD model provides a good description of the HERA data on the dependence of the proton DVCS cross section on Q^2, W (at Q^2=4 GeV^2) and t. At Q^2 =...
[ { "created": "Tue, 5 Feb 2008 17:14:55 GMT", "version": "v1" } ]
2008-11-26
[ [ "Goeke", "K.", "", "Ruhr U., Bochum" ], [ "Guzey", "V.", "", "Jefferson Lab" ], [ "Siddikov", "M.", "", "Ruhr U., Bochum & Uzbekistan Natl. U." ] ]
We consider Deeply Virtual Compton Scattering (DVCS) on nucleons and nuclei in the framework of generalized vector meson dominance (GVMD) model. We demonstrate that the GVMD model provides a good description of the HERA data on the dependence of the proton DVCS cross section on Q^2, W (at Q^2=4 GeV^2) and t. At Q^2 = 8...
2009.04858
Guo-Li Liu
Su-Ya Bie, Guo-Li Liu, Wenyu Wang
Top Rare Decays t-> cV in the Mirror Twin Higgs Models
16 pages, 4 figures. To appear in Chin. Phys. C
null
10.1088/1674-1137/abc1d5
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The decay t -> c V (V=\gamma, Z, g) process in the mirror twin Higgs models with the colorless top partners are studied in this paper. We found that the branching ratios of these decays can in some parameter spaces alter the standard model expectations greatly and may be detectable according to the currently precisio...
[ { "created": "Thu, 10 Sep 2020 13:43:42 GMT", "version": "v1" } ]
2021-02-03
[ [ "Bie", "Su-Ya", "" ], [ "Liu", "Guo-Li", "" ], [ "Wang", "Wenyu", "" ] ]
The decay t -> c V (V=\gamma, Z, g) process in the mirror twin Higgs models with the colorless top partners are studied in this paper. We found that the branching ratios of these decays can in some parameter spaces alter the standard model expectations greatly and may be detectable according to the currently precision ...
1202.3281
Seung-il Nam
Seung-il Nam, Chung-Wen Kao
Fragmentation and quark distribution functions for the pion and kaon with explicit flavor-SU(3)-symmetry breaking
13 pages, 16 figures
null
10.1103/PhysRevD.85.094023
KIAS-P12014; CYCU-HEP-12-01
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the unpolarized pion and kaon fragmentation functions, employing the nonlocal chiral-quark model, which manifests the nonlocal interactions between the quarks and pseudoscalar mesons, considering the explicit flavor-SU(3)-symmetry breaking in terms of the current-quark masses. Moreover, we study the qu...
[ { "created": "Wed, 15 Feb 2012 11:17:15 GMT", "version": "v1" } ]
2015-06-04
[ [ "Nam", "Seung-il", "" ], [ "Kao", "Chung-Wen", "" ] ]
We investigate the unpolarized pion and kaon fragmentation functions, employing the nonlocal chiral-quark model, which manifests the nonlocal interactions between the quarks and pseudoscalar mesons, considering the explicit flavor-SU(3)-symmetry breaking in terms of the current-quark masses. Moreover, we study the quar...
0801.0937
Tsuneo Uematsu
Yoshio Kitadono, Ken Sasaki, Takahiro Ueda and Tsuneo Uematsu
Target Mass Corrections for the Virtual Photon Structure Functions to the Next-to-next-to-leading Order in QCD
24 pages, LaTeX, 7 eps figures, REVTeX 4
Phys.Rev.D77:054019,2008
10.1103/PhysRevD.77.054019
YNU-HEPTh-07-102,KUNS-2119
hep-ph
null
We investigate target mass effects in the unpolarized virtual photon structure functions $F_2^\gamma(x,Q^2,P^2)$ and $F_L^\gamma(x,Q^2,P^2)$ in perturbative QCD for the kinematical region $\Lambda^2 \ll P^2 \ll Q^2$, where $-Q^2(-P^2)$ is the mass squared of the probe (target) photon and $\Lambda$ is the QCD scale pa...
[ { "created": "Mon, 7 Jan 2008 10:16:10 GMT", "version": "v1" } ]
2008-11-26
[ [ "Kitadono", "Yoshio", "" ], [ "Sasaki", "Ken", "" ], [ "Ueda", "Takahiro", "" ], [ "Uematsu", "Tsuneo", "" ] ]
We investigate target mass effects in the unpolarized virtual photon structure functions $F_2^\gamma(x,Q^2,P^2)$ and $F_L^\gamma(x,Q^2,P^2)$ in perturbative QCD for the kinematical region $\Lambda^2 \ll P^2 \ll Q^2$, where $-Q^2(-P^2)$ is the mass squared of the probe (target) photon and $\Lambda$ is the QCD scale para...
1612.07479
Kazem Azizi
K. Azizi, Y. Sarac, H. Sundu
Analysis of $P_c^+(4380)$ and $P_c^+(4450)$ as pentaquark states in the molecular picture with QCD sum rules
11 Pages, 2 Figures and 2 Tables
Phys. Rev. D 95, 094016 (2017)
10.1103/PhysRevD.95.094016
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
To better understand the nature and internal structure of the exotic states discovered by many collaborations, more information on their electromagnetic properties and their strong and weak interactions with other hadrons is needed. The residue or current coupling constant of these states together with their mass are...
[ { "created": "Thu, 22 Dec 2016 08:09:01 GMT", "version": "v1" }, { "created": "Fri, 5 May 2017 07:21:36 GMT", "version": "v2" } ]
2017-05-31
[ [ "Azizi", "K.", "" ], [ "Sarac", "Y.", "" ], [ "Sundu", "H.", "" ] ]
To better understand the nature and internal structure of the exotic states discovered by many collaborations, more information on their electromagnetic properties and their strong and weak interactions with other hadrons is needed. The residue or current coupling constant of these states together with their mass are t...
2208.05377
Wolfgang Sch\"afer
Izabela Babiarz, Roman Pasechnik, Wolfgang Sch\"afer, Antoni Szczurek
Light-front approach to axial-vector quarkonium $\gamma^* \gamma^*$ form factors
25 pages, 7 figures
null
10.1007/JHEP09(2022)170
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
In this work, we perform a detailed study of transition form factors for axial-vector meson production via the two-photon fusion process $\gamma^* \gamma^* \to 1^{++}$, with space-like virtual photons in the initial state and a $P$-wave axial-vector quarkonium in the final state. In this analysis, we employ the forma...
[ { "created": "Wed, 10 Aug 2022 14:49:14 GMT", "version": "v1" } ]
2022-10-19
[ [ "Babiarz", "Izabela", "" ], [ "Pasechnik", "Roman", "" ], [ "Schäfer", "Wolfgang", "" ], [ "Szczurek", "Antoni", "" ] ]
In this work, we perform a detailed study of transition form factors for axial-vector meson production via the two-photon fusion process $\gamma^* \gamma^* \to 1^{++}$, with space-like virtual photons in the initial state and a $P$-wave axial-vector quarkonium in the final state. In this analysis, we employ the formali...
0811.0521
Dipankar Chakrabarti
D. Chakrabarti, R. Manohar, A. Mukherjee
Chiral odd GPDs in transverse and longitudinal impact parameter spaces
1 figure and references added, typos corrected. version to appear in Phys.Rev.D
Phys.Rev.D79:034006,2009
10.1103/PhysRevD.79.034006
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the chiral odd generalized parton distributions (GPDs) for non-zero skewness $\zeta$ in transverse and longitudinal position spaces by taking Fourier transform with respect to the transverse and longitudinal momentum transfer respectively. We present overlap formulas for the chiral-odd GPDs in terms of...
[ { "created": "Tue, 4 Nov 2008 14:34:30 GMT", "version": "v1" }, { "created": "Wed, 4 Feb 2009 09:38:12 GMT", "version": "v2" } ]
2009-11-13
[ [ "Chakrabarti", "D.", "" ], [ "Manohar", "R.", "" ], [ "Mukherjee", "A.", "" ] ]
We investigate the chiral odd generalized parton distributions (GPDs) for non-zero skewness $\zeta$ in transverse and longitudinal position spaces by taking Fourier transform with respect to the transverse and longitudinal momentum transfer respectively. We present overlap formulas for the chiral-odd GPDs in terms of l...
hep-ph/0205305
Loic Grandchamp
L. Grandchamp and R. Rapp
Charmonium Suppression and Regeneration from SPS to RHIC
17 pages, 15 figures
Nucl.Phys.A709:415-439,2002
10.1016/S0375-9474(02)01027-8
null
hep-ph nucl-th
null
The production of charmonia is investigated for heavy-ion collisions from SPS to RHIC energies. Our approach incorporates two sources of $J/\Psi$ yield: (i) a direct contribution arising from early (hard) parton-parton collisions, subject to subsequent nuclear absorption, quark-gluon plasma and hadronic dissociation,...
[ { "created": "Mon, 27 May 2002 15:04:52 GMT", "version": "v1" } ]
2011-05-05
[ [ "Grandchamp", "L.", "" ], [ "Rapp", "R.", "" ] ]
The production of charmonia is investigated for heavy-ion collisions from SPS to RHIC energies. Our approach incorporates two sources of $J/\Psi$ yield: (i) a direct contribution arising from early (hard) parton-parton collisions, subject to subsequent nuclear absorption, quark-gluon plasma and hadronic dissociation, a...
hep-ph/9305258
John Terning
Thomas Appelquist and John Terning
Revenge of the One-Family Technicolor Models
16 pages, LaTeX
Phys.Lett. B315 (1993) 139-145
10.1016/0370-2693(93)90171-D
null
hep-ph
null
We describe how isospin splitting and techniquark-technilepton splitting in one-family technicolor models can reduce the predicted value of the electroweak radiative correction parameter S, without making a large contribution to the T parameter.
[ { "created": "Wed, 12 May 1993 19:38:31 GMT", "version": "v1" } ]
2009-10-22
[ [ "Appelquist", "Thomas", "" ], [ "Terning", "John", "" ] ]
We describe how isospin splitting and techniquark-technilepton splitting in one-family technicolor models can reduce the predicted value of the electroweak radiative correction parameter S, without making a large contribution to the T parameter.
2103.06933
Daniel Vagie
Huai-Ke Guo, Kuver Sinha, Daniel Vagie, Graham White
The Benefits of Diligence: How Precise are Predicted Gravitational Wave Spectra in Models with Phase Transitions?
43 pages, 16 figures, 1 table
JHEP06(2021)164
10.1007/JHEP06(2021)164
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Models of particle physics that feature phase transitions typically provide predictions for stochastic gravitational wave signals at future detectors and such predictions are used to delineate portions of the model parameter space that can be constrained. The question is: how precise are such predictions? Uncertainti...
[ { "created": "Thu, 11 Mar 2021 20:07:36 GMT", "version": "v1" }, { "created": "Mon, 12 Jul 2021 16:13:57 GMT", "version": "v2" } ]
2021-07-13
[ [ "Guo", "Huai-Ke", "" ], [ "Sinha", "Kuver", "" ], [ "Vagie", "Daniel", "" ], [ "White", "Graham", "" ] ]
Models of particle physics that feature phase transitions typically provide predictions for stochastic gravitational wave signals at future detectors and such predictions are used to delineate portions of the model parameter space that can be constrained. The question is: how precise are such predictions? Uncertainties...
0907.3669
Hung-Ming Tsai
Hung-Ming Tsai and Berndt M\"uller
Aspects of thermal strange quark production: the deconfinement and chiral phase transitions
4 pages, 2 figures, final version - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennessee
Nucl.Phys.A830:551c-554c,2009
10.1016/j.nuclphysa.2009.09.045
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the gluonic sector of the three-flavor PNJL model by obtaining the adjoint Polyakov loop and the gluon distribution function in the mean-field approximation. Besides, we explore the thermal strange quark pair-production processes, $q\bar {q} \to s\bar {s}$ and $gg \to s \bar {s}$, with the aid of the three-f...
[ { "created": "Tue, 21 Jul 2009 19:56:34 GMT", "version": "v1" }, { "created": "Fri, 11 Sep 2009 07:13:31 GMT", "version": "v2" } ]
2009-11-18
[ [ "Tsai", "Hung-Ming", "" ], [ "Müller", "Berndt", "" ] ]
We study the gluonic sector of the three-flavor PNJL model by obtaining the adjoint Polyakov loop and the gluon distribution function in the mean-field approximation. Besides, we explore the thermal strange quark pair-production processes, $q\bar {q} \to s\bar {s}$ and $gg \to s \bar {s}$, with the aid of the three-fla...
hep-ph/9808321
Mirjam Cvetic
Mirjam Cvetic, Lisa Everett, Jing Wang
Units and Numerical Values of the Effective Couplings in Perturbative Heterotic String Vacua
RevTeX, 8pg
Phys.Rev.D59:107901,1999
10.1103/PhysRevD.59.107901
UPR-0810-T
hep-ph hep-th
null
We determine the units and numerical values for a class of couplings in the effective theory of perturbative heterotic string vacua, with the emphasis on the correct translation between the canonical gauge coupling g and Planck scale M_Planck ~ 1.2 x 10^19 GeV as used in the effective theory description and the strin...
[ { "created": "Thu, 13 Aug 1998 22:34:26 GMT", "version": "v1" } ]
2009-09-17
[ [ "Cvetic", "Mirjam", "" ], [ "Everett", "Lisa", "" ], [ "Wang", "Jing", "" ] ]
We determine the units and numerical values for a class of couplings in the effective theory of perturbative heterotic string vacua, with the emphasis on the correct translation between the canonical gauge coupling g and Planck scale M_Planck ~ 1.2 x 10^19 GeV as used in the effective theory description and the string ...
2202.08091
Xin-Qiang Li
Fang-Min Cai, Shuichiro Funatsu, Xin-Qiang Li, and Ya-Dong Yang
Rare top-quark decays $t \to cg(g)$ in the aligned two-Higgs-doublet model
48 pages, 6 figures, and 4 tables; more references and discussions added, final version published in the journal
null
10.1140/epjc/s10052-022-10815-x
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We update the Standard Model (SM) predictions for the branching ratios of the rare top-quark decays $t \to cg(g)$, and evaluate the maximum rates that can be reached in the aligned as well as in the four conventional two-Higgs-doublet models (2HDMs) with $\mathcal{Z}_2$ symmetries. Taking into account the relevant co...
[ { "created": "Wed, 16 Feb 2022 14:24:02 GMT", "version": "v1" }, { "created": "Thu, 6 Oct 2022 09:36:42 GMT", "version": "v2" } ]
2022-10-26
[ [ "Cai", "Fang-Min", "" ], [ "Funatsu", "Shuichiro", "" ], [ "Li", "Xin-Qiang", "" ], [ "Yang", "Ya-Dong", "" ] ]
We update the Standard Model (SM) predictions for the branching ratios of the rare top-quark decays $t \to cg(g)$, and evaluate the maximum rates that can be reached in the aligned as well as in the four conventional two-Higgs-doublet models (2HDMs) with $\mathcal{Z}_2$ symmetries. Taking into account the relevant cons...
hep-ph/0201260
P. K. Das pg phy
Prasanta Das (IIT, Kanpur) and Uma Mahanta (HRI, Allahabad)
Tadpole diagrams due to KK modes of graviton and radion do not contribute to the $\rho$ parameter
Latex, 7 pages, 1 eps figure
null
null
null
hep-ph
null
In this brief report we show that tadpole diagrams due to KK modes of the graviton and radion do not contribute to the vectorial isospin breaking $\rho$ parameter. Our result is fairly general and it holds both for ADD and RS type scenarios. It shows that the difference between the results of different publications o...
[ { "created": "Mon, 28 Jan 2002 18:06:30 GMT", "version": "v1" } ]
2007-05-23
[ [ "Das", "Prasanta", "", "IIT, Kanpur" ], [ "Mahanta", "Uma", "", "HRI, Allahabad" ] ]
In this brief report we show that tadpole diagrams due to KK modes of the graviton and radion do not contribute to the vectorial isospin breaking $\rho$ parameter. Our result is fairly general and it holds both for ADD and RS type scenarios. It shows that the difference between the results of different publications on ...
hep-ph/0112063
Gustavo Burdman
Gustavo Burdman
Rare B decays beyond B-> Xs gamma
11 pages, 2 ps figures. Invited talk at Heavy Flavors 9, Caltech, Pasadena, Sept. 10-13 2001
AIP Conf.Proc. 618 (2002) 169-179
10.1063/1.1478834
null
hep-ph
null
I discuss recent progress in our understanding of exclusive rare and semileptonic decays. I show the impact of HQET when combined with the predictions in the Large Energy Limit of QCD, focusing first on applications to $B\to K^*\ell^+\ell^+$. I also discuss the constraints on semileptonic form-factors that appear in ...
[ { "created": "Tue, 4 Dec 2001 22:14:37 GMT", "version": "v1" } ]
2009-11-07
[ [ "Burdman", "Gustavo", "" ] ]
I discuss recent progress in our understanding of exclusive rare and semileptonic decays. I show the impact of HQET when combined with the predictions in the Large Energy Limit of QCD, focusing first on applications to $B\to K^*\ell^+\ell^+$. I also discuss the constraints on semileptonic form-factors that appear in HQ...
1609.03445
Mahdi Ahmadian Shalchi
M. A. Shalchi, M. R. Hadizadeh
R-Matrix Calculations for Few-Quark Bound States
null
Eur. Phys. J. C (2016) 76: 522
10.1140/epjc/s10052-016-4369-1
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The R--matrix method is implemented to study the heavy charm and bottom diquark, triquark, tetraquark and pentaquarks in configuration space, as the bound states of quark--antiquark, diquark--quark, diquark--antidiquark and diquark--antitriquark systems, respectively. The mass spectrum and the size of these systems a...
[ { "created": "Mon, 12 Sep 2016 15:21:41 GMT", "version": "v1" }, { "created": "Fri, 30 Sep 2016 21:09:27 GMT", "version": "v2" } ]
2016-10-04
[ [ "Shalchi", "M. A.", "" ], [ "Hadizadeh", "M. R.", "" ] ]
The R--matrix method is implemented to study the heavy charm and bottom diquark, triquark, tetraquark and pentaquarks in configuration space, as the bound states of quark--antiquark, diquark--quark, diquark--antidiquark and diquark--antitriquark systems, respectively. The mass spectrum and the size of these systems are...
1006.1947
Henry Tsz-King Wong
M. Deniz er al., TEXONO Collaboration
Constraints on Non-Standard Neutrino Interactions and Unparticle Physics with Neutrino-Electron Scattering at the Kuo-Sheng Nuclear Power Reactor
8 pages, 6 figures, 1 table ; Published Version in V2 with minor revisions
Phys.Rev.D82:033004,2010
10.1103/PhysRevD.82.033004
AS-TEXONO/10-03
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Neutrino-electron scatterings are purely leptonic processes with robust Standard Model (SM) predictions. Their measurements can therefore provide constraints to physics beyond SM. The $\nuebar$-e data taken at the Kuo-Sheng Reactor Neutrino Laboratory were used to probe two scenarios: Non-Standard Neutrino Interactio...
[ { "created": "Thu, 10 Jun 2010 04:56:01 GMT", "version": "v1" }, { "created": "Mon, 9 Aug 2010 06:12:02 GMT", "version": "v2" } ]
2014-11-21
[ [ "al.", "M. Deniz er", "" ], [ "Collaboration", "TEXONO", "" ] ]
Neutrino-electron scatterings are purely leptonic processes with robust Standard Model (SM) predictions. Their measurements can therefore provide constraints to physics beyond SM. The $\nuebar$-e data taken at the Kuo-Sheng Reactor Neutrino Laboratory were used to probe two scenarios: Non-Standard Neutrino Interactions...
1610.07606
Anthony DiFranzo
Anthony DiFranzo and Gopolang Mohlabeng
Multi-component Dark Matter through a Radiative Higgs Portal
22 pages, 9 figures, published version, updated text and references
J. High Energ. Phys. (2017) 2017: 80
10.1007/JHEP01(2017)080
FERMILAB-PUB-16-456-T, UCI-HEP-TR-2016-19
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study a multi-component dark matter model where interactions with the Standard Model are primarily via the Higgs boson. The model contains vector-like fermions charged under $SU(2)_W \times U(1)_Y$ and under the dark gauge group, $U(1)^\prime$. This results in two dark matter candidates. A spin-1 and a spin-1/2 ca...
[ { "created": "Mon, 24 Oct 2016 20:00:00 GMT", "version": "v1" }, { "created": "Mon, 23 Jan 2017 21:11:59 GMT", "version": "v2" } ]
2017-01-25
[ [ "DiFranzo", "Anthony", "" ], [ "Mohlabeng", "Gopolang", "" ] ]
We study a multi-component dark matter model where interactions with the Standard Model are primarily via the Higgs boson. The model contains vector-like fermions charged under $SU(2)_W \times U(1)_Y$ and under the dark gauge group, $U(1)^\prime$. This results in two dark matter candidates. A spin-1 and a spin-1/2 cand...
1201.6337
Franz Gross
Franz Gross, G. Ramalho and M. T. Pena
Spin and angular momentum in the nucleon
27 pages; 13 figures
Phys. Rev. D 85, 093006 (2012) [27 pages]
10.1103/PhysRevD.85.093006
JLAB-THY-12-1489
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Using the covariant spectator theory (CST), we present the results of a valence quark-diquark model calculation of the nucleon structure function f(x) measured in unpolarized deep inelastic scattering (DIS), and the structure functions g1(x) and g2(x) measured in DIS using polarized beams and targets. Parameters of t...
[ { "created": "Mon, 30 Jan 2012 20:15:51 GMT", "version": "v1" } ]
2012-05-24
[ [ "Gross", "Franz", "" ], [ "Ramalho", "G.", "" ], [ "Pena", "M. T.", "" ] ]
Using the covariant spectator theory (CST), we present the results of a valence quark-diquark model calculation of the nucleon structure function f(x) measured in unpolarized deep inelastic scattering (DIS), and the structure functions g1(x) and g2(x) measured in DIS using polarized beams and targets. Parameters of the...
1510.08462
Zhengkang Zhang
James D. Wells and Zhengkang Zhang
Effective theories of universal theories
40 pages + appendix and references, 8 tables
null
10.1007/JHEP01(2016)123
MCTP-15-24
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
It is well-known but sometimes overlooked that constraints on the oblique parameters (most notably $S$ and $T$ parameters) are generally speaking only applicable to a special class of new physics scenarios known as universal theories. In the effective field theory (EFT) framework, the oblique parameters should not be...
[ { "created": "Wed, 28 Oct 2015 20:08:44 GMT", "version": "v1" }, { "created": "Thu, 19 Nov 2015 18:29:41 GMT", "version": "v2" } ]
2016-02-17
[ [ "Wells", "James D.", "" ], [ "Zhang", "Zhengkang", "" ] ]
It is well-known but sometimes overlooked that constraints on the oblique parameters (most notably $S$ and $T$ parameters) are generally speaking only applicable to a special class of new physics scenarios known as universal theories. In the effective field theory (EFT) framework, the oblique parameters should not be a...
hep-ph/9311224
null
A.C. Pearson
Why the real time formalism doesn't factorise
7 pages, Imperial/TP/93-94/7
null
null
null
hep-ph
null
We show that in the real time formalism, the generating functional for thermal Green functions does not factorise. However for most calculations, the normal real time Feynman rules can still be used to give correct results.
[ { "created": "Thu, 4 Nov 1993 14:35:47 GMT", "version": "v1" } ]
2007-05-23
[ [ "Pearson", "A. C.", "" ] ]
We show that in the real time formalism, the generating functional for thermal Green functions does not factorise. However for most calculations, the normal real time Feynman rules can still be used to give correct results.
hep-ph/0101201
Chuan Hung Chen
Chuan-Hung Chen and C.Q. Geng
Lepton Asymmetries in Heavy Baryon Decays of $\Lambda_b\to\Lambda l^+l^-$
10 pages, 9 figures, revised version
Phys.Lett. B516 (2001) 327-336
10.1016/S0370-2693(01)00937-6
null
hep-ph
null
We study the dilepton forward-backward and the longitudinal, normal and transverse lepton polarization asymmetries in the heavy baryon decays of $\Lambda_b\to\Lambda l^+l^-$. We show that the asymmetries have a less dependence on the non-perturbative QCD effects. In the standard model, we find that the integrated for...
[ { "created": "Thu, 18 Jan 2001 03:35:34 GMT", "version": "v1" }, { "created": "Mon, 19 Mar 2001 10:11:21 GMT", "version": "v2" } ]
2010-06-02
[ [ "Chen", "Chuan-Hung", "" ], [ "Geng", "C. Q.", "" ] ]
We study the dilepton forward-backward and the longitudinal, normal and transverse lepton polarization asymmetries in the heavy baryon decays of $\Lambda_b\to\Lambda l^+l^-$. We show that the asymmetries have a less dependence on the non-perturbative QCD effects. In the standard model, we find that the integrated forwa...
2305.00013
Ian Lewis
Samuel D. Lane, Hye-Sung Lee, Ian M. Lewis
Multi-photon decays of the Higgs boson at the LHC
23 pages, 12 figures
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Many new physics scenarios predict multi-photon Higgs resonances. One such scenario is the dark axion portal model. The primary decay chain that we study is the Higgs to dark photon ($\gamma_D$) pairs that subsequently decay into a photon ($\gamma$) and an axion-like particle ($a$). The axion-like particles then deca...
[ { "created": "Fri, 28 Apr 2023 18:00:00 GMT", "version": "v1" } ]
2023-05-02
[ [ "Lane", "Samuel D.", "" ], [ "Lee", "Hye-Sung", "" ], [ "Lewis", "Ian M.", "" ] ]
Many new physics scenarios predict multi-photon Higgs resonances. One such scenario is the dark axion portal model. The primary decay chain that we study is the Higgs to dark photon ($\gamma_D$) pairs that subsequently decay into a photon ($\gamma$) and an axion-like particle ($a$). The axion-like particles then decay ...
hep-ph/0607285
Manuel Toharia
Brooks Thomas and Manuel Toharia
Lepton Flavor Violation and Supersymmetric Dirac Leptogenesis
15 pages, 4 figures, corrected parametric dependance on leading LFV term, figure 2 and discussion modified accordingly, conclusions unchanged
Phys.Rev.D75:013013,2007
10.1103/PhysRevD.75.013013
MCTP-06-17
hep-ph
null
Dirac leptogenesis (or Dirac neutrinogenesis), in which neutrinos are purely Dirac particles, is an interesting alternative to the standard leptogenesis scenario. In its supersymmetric version, the modified form of the superpotential required for successful baryogenesis contributes new, generically non-flavor-diagona...
[ { "created": "Wed, 26 Jul 2006 02:56:54 GMT", "version": "v1" }, { "created": "Tue, 29 Aug 2006 01:33:29 GMT", "version": "v2" } ]
2008-11-26
[ [ "Thomas", "Brooks", "" ], [ "Toharia", "Manuel", "" ] ]
Dirac leptogenesis (or Dirac neutrinogenesis), in which neutrinos are purely Dirac particles, is an interesting alternative to the standard leptogenesis scenario. In its supersymmetric version, the modified form of the superpotential required for successful baryogenesis contributes new, generically non-flavor-diagonal ...
0802.0171
Bernd Kniehl
Joachim Brod, Frank Fugel, and Bernd A. Kniehl
Dominant two-loop electroweak corrections to the hadroproduction of a pseudoscalar Higgs boson and its photonic decay
9 pages, 3 figures
Phys.Rev.D78:011303,2008
10.1103/PhysRevD.78.011303
DESY 08-010, TTP08-05, SFB/CPP-08-10
hep-ph
null
We present the dominant two-loop electroweak corrections to the partial decay widths to gluon jets and prompt photons of the neutral CP-odd Higgs boson A^0, with mass M_{A^0} < 2 M_W, in the two-Higgs-doublet model for low to intermediate values of the ratio tan(beta) = v_2/v_1 of the vacuum expectation values. They ...
[ { "created": "Fri, 1 Feb 2008 17:27:20 GMT", "version": "v1" } ]
2008-11-26
[ [ "Brod", "Joachim", "" ], [ "Fugel", "Frank", "" ], [ "Kniehl", "Bernd A.", "" ] ]
We present the dominant two-loop electroweak corrections to the partial decay widths to gluon jets and prompt photons of the neutral CP-odd Higgs boson A^0, with mass M_{A^0} < 2 M_W, in the two-Higgs-doublet model for low to intermediate values of the ratio tan(beta) = v_2/v_1 of the vacuum expectation values. They ap...
1602.08212
Albino Hernandez-Galeana
Albino Hernandez-Galeana
Charged Fermion Masses and Mixing from a SU(3) Family Symmetry Model
LaTex 14 pages, 1 figure. Contribution to Proceedings to the 18th Bled workshop "What comes beyond the standard models.", 11-19 July, 2015, Bled, Slovenia. version with minor improvements and corrections. arXiv admin note: substantial text overlap with arXiv:1212.4571, arXiv:1312.3403
Bled Workshops in Physics, Vol.16, No. 2, (2015) 47-62. ( ISSN: 1580-4992 )
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Within the framework of a Beyond Standard Model (BSM) with a local $SU(3)$ family symmetry, we report an updated fit of parameters which account for the known spectrum of quarks and charged lepton masses and the quark mixing in a $4\times 4$ non-unitary $V_{CKM}$. In this scenario, ordinary heavy fermions, top and bo...
[ { "created": "Fri, 26 Feb 2016 06:35:05 GMT", "version": "v1" } ]
2016-02-29
[ [ "Hernandez-Galeana", "Albino", "" ] ]
Within the framework of a Beyond Standard Model (BSM) with a local $SU(3)$ family symmetry, we report an updated fit of parameters which account for the known spectrum of quarks and charged lepton masses and the quark mixing in a $4\times 4$ non-unitary $V_{CKM}$. In this scenario, ordinary heavy fermions, top and bott...
2108.10035
Siamak Sadat Gousheh
S. Abbaslu, S. Rostam Zadeh and S. S. Gousheh
Contribution of the thermal mass to the chiral vortical effect and magnetobaryogenesis
28 pages, 2 figures, 4 tables, 4 Appendices
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We show that the chiral vortical effect can exist in a nonchiral electroweak plasma in thermal equilibrium using the effective thermal masses of the fermions in the symmetric phase. We use a nonperturbative formula for the vortical current, which has been recently obtained and is a functional of the dispersion relati...
[ { "created": "Mon, 23 Aug 2021 09:51:01 GMT", "version": "v1" }, { "created": "Fri, 8 Jul 2022 18:01:34 GMT", "version": "v2" }, { "created": "Sun, 27 Aug 2023 14:40:06 GMT", "version": "v3" } ]
2023-08-29
[ [ "Abbaslu", "S.", "" ], [ "Zadeh", "S. Rostam", "" ], [ "Gousheh", "S. S.", "" ] ]
We show that the chiral vortical effect can exist in a nonchiral electroweak plasma in thermal equilibrium using the effective thermal masses of the fermions in the symmetric phase. We use a nonperturbative formula for the vortical current, which has been recently obtained and is a functional of the dispersion relation...
0908.3581
Ayse Cagil
Ayse Cagil, Mehmet T. Zeyrek
$Z_L$ associated pair production of charged Higgs bosons in the littlest Higgs model at $e^{+}e^{-}$ colliders
20 pages, 5 figures, version published in Physical Review D
Phys.Rev.D80:055021,2009
10.1103/PhysRevD.80.055021
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The production of single and doubly charged Higgs bosons associated with standard model gauge boson $Z_L$ in $e^{+}e^{-}$ colliders are examined. The sensitivity of these processes on the littlest Higgs model parameters in the range of compatibility with electroweak precision observables are analyzed. The possibility...
[ { "created": "Tue, 25 Aug 2009 10:07:20 GMT", "version": "v1" }, { "created": "Mon, 12 Mar 2012 12:46:43 GMT", "version": "v2" } ]
2012-03-13
[ [ "Cagil", "Ayse", "" ], [ "Zeyrek", "Mehmet T.", "" ] ]
The production of single and doubly charged Higgs bosons associated with standard model gauge boson $Z_L$ in $e^{+}e^{-}$ colliders are examined. The sensitivity of these processes on the littlest Higgs model parameters in the range of compatibility with electroweak precision observables are analyzed. The possibility o...
hep-ph/0701032
Harry Lipkin J
Harry J. Lipkin
From Sakata Model to Goldberg-Ne'eman Quarks and Nambu QCD Phenomenology and "Right" and "Wrong" experiments
8 pages
Prog.Theor.Phys.Suppl.167:155-162,2007
10.1143/PTPS.167.155
null
hep-ph
null
The basic theoretical milestones were the Sakata SU(3) symmetry, the Goldberg-Ne'eman composite model with SU(3) triplets having baryon number (1/3) and the Nambu color gauge Lagrangian. The transition was led in right and wrong directions by experiments interpreted by phenomenology. A "good" experiment on $\bar p p$...
[ { "created": "Thu, 4 Jan 2007 18:08:42 GMT", "version": "v1" }, { "created": "Wed, 31 Jan 2007 14:52:21 GMT", "version": "v2" } ]
2008-11-26
[ [ "Lipkin", "Harry J.", "" ] ]
The basic theoretical milestones were the Sakata SU(3) symmetry, the Goldberg-Ne'eman composite model with SU(3) triplets having baryon number (1/3) and the Nambu color gauge Lagrangian. The transition was led in right and wrong directions by experiments interpreted by phenomenology. A "good" experiment on $\bar p p$ a...
hep-ph/0601090
Chris Bird
C. Bird, R. Kowalewski, M. Pospelov
Dark matter pair-production in b -> s transitions
23 pages, 11 figures,Invited Review for MPLA; Corrected minor typos, added two references
Mod.Phys.Lett.A21:457-478,2006
10.1142/S0217732306019852
UVIC-TH/06-01
hep-ph
null
The flavour-changing neutral current transition b \to s can serve as a sensitive probe of WIMP dark matter models, if the WIMP mass is under 2 GeV. In this work we extend our earlier analysis to a generic class of models where the interaction between the dark matter sector and the Standard Model matter sector is medi...
[ { "created": "Thu, 12 Jan 2006 06:55:04 GMT", "version": "v1" }, { "created": "Sun, 5 Mar 2006 05:06:14 GMT", "version": "v2" } ]
2009-11-11
[ [ "Bird", "C.", "" ], [ "Kowalewski", "R.", "" ], [ "Pospelov", "M.", "" ] ]
The flavour-changing neutral current transition b \to s can serve as a sensitive probe of WIMP dark matter models, if the WIMP mass is under 2 GeV. In this work we extend our earlier analysis to a generic class of models where the interaction between the dark matter sector and the Standard Model matter sector is mediat...
1506.05042
Fernando M\'endez
J. Gamboa and F. Mendez
Dark and Visible Photons as Source of CP Violation
4 pages, no figures
null
null
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The problem of excess gamma radiation in the center of galaxy is discussed assuming that the photon's production is dominated by two kinds of processes, the first one due to the conventional kinetic mixing term and, secondly, due to a kinetic mixing term violating the CP symmetry between dark and visible photons. The...
[ { "created": "Tue, 16 Jun 2015 17:34:26 GMT", "version": "v1" } ]
2015-06-17
[ [ "Gamboa", "J.", "" ], [ "Mendez", "F.", "" ] ]
The problem of excess gamma radiation in the center of galaxy is discussed assuming that the photon's production is dominated by two kinds of processes, the first one due to the conventional kinetic mixing term and, secondly, due to a kinetic mixing term violating the CP symmetry between dark and visible photons. The C...
1407.3792
Roman Kogler
M. Baak, J. Cuth, J. Haller, A. Hoecker, R. Kogler, K. Moenig, M. Schott, J. Stelzer
The global electroweak fit at NNLO and prospects for the LHC and ILC
26 pages, 9 figures
null
10.1140/epjc/s10052-014-3046-5
DESY-14-124
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
For a long time, global fits of the electroweak sector of the Standard Model (SM) have been used to exploit measurements of electroweak precision observables at lepton colliders (LEP, SLC), together with measurements at hadron colliders (Tevatron, LHC), and accurate theoretical predictions at multi-loop level, to con...
[ { "created": "Mon, 14 Jul 2014 20:00:04 GMT", "version": "v1" } ]
2015-06-22
[ [ "Baak", "M.", "" ], [ "Cuth", "J.", "" ], [ "Haller", "J.", "" ], [ "Hoecker", "A.", "" ], [ "Kogler", "R.", "" ], [ "Moenig", "K.", "" ], [ "Schott", "M.", "" ], [ "Stelzer", "J.", "" ] ]
For a long time, global fits of the electroweak sector of the Standard Model (SM) have been used to exploit measurements of electroweak precision observables at lepton colliders (LEP, SLC), together with measurements at hadron colliders (Tevatron, LHC), and accurate theoretical predictions at multi-loop level, to const...
1504.07617
Jan Hajer
Jan Hajer, Ying-Ying Li, Tao Liu, John F.H. Shiu
Heavy Higgs Bosons at 14 TeV and 100 TeV
published version
null
10.1007/JHEP11(2015)124
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Searching for Higgs bosons beyond the Standard Model (BSM) is one of the most important missions for hadron colliders. As a landmark of BSM physics, the MSSM Higgs sector at the LHC is expected to be tested up to the scale of the decoupling limit of O(1) TeV, except for a wedge region centered around $\tan\beta \sim ...
[ { "created": "Tue, 28 Apr 2015 19:55:43 GMT", "version": "v1" }, { "created": "Fri, 30 Oct 2015 17:37:27 GMT", "version": "v2" } ]
2016-01-20
[ [ "Hajer", "Jan", "" ], [ "Li", "Ying-Ying", "" ], [ "Liu", "Tao", "" ], [ "Shiu", "John F. H.", "" ] ]
Searching for Higgs bosons beyond the Standard Model (BSM) is one of the most important missions for hadron colliders. As a landmark of BSM physics, the MSSM Higgs sector at the LHC is expected to be tested up to the scale of the decoupling limit of O(1) TeV, except for a wedge region centered around $\tan\beta \sim 3 ...
hep-ph/9708271
Andrei Shuvaev
Yu. M. Shabelski, A. G. Shuvaev (St.Petersburg Nuclear Physics Institute)
Heavy quark pair correlations in QCD
11 pages, LaTeX, 8 figures
Eur.Phys.J.C6:313-319,1999
10.1007/s100520050342
null
hep-ph
null
The azimutal correlations of heavy quarks produced in the high energy $pp$ ($p\bar{p}$) collisions are calculated in the framework of QCD without the usual assumptions of the parton model. The virtual nature of the interacting gluons as well as their transverse motion and different polarizations are taken into accoun...
[ { "created": "Thu, 7 Aug 1997 10:03:17 GMT", "version": "v1" } ]
2011-01-25
[ [ "Shabelski", "Yu. M.", "", "St.Petersburg Nuclear Physics\n Institute" ], [ "Shuvaev", "A. G.", "", "St.Petersburg Nuclear Physics\n Institute" ] ]
The azimutal correlations of heavy quarks produced in the high energy $pp$ ($p\bar{p}$) collisions are calculated in the framework of QCD without the usual assumptions of the parton model. The virtual nature of the interacting gluons as well as their transverse motion and different polarizations are taken into account....
1905.02892
Zhi-Gang Wang
Zhi-Gang Wang
Analysis of the $P_c(4312)$, $P_c(4440)$, $P_c(4457)$ and related hidden-charm pentaquark states with QCD sum rules
20 pages, 14 figures. arXiv admin note: text overlap with arXiv:1806.10384
Int.J.Mod.Phys.A35(2020)2050003
10.1142/S0217751X20500037
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this article, we restudy the ground state mass spectrum of the diquark-diquark-antiquark type $uudc\bar{c}$ pentaquark states with the QCD sum rules by carrying out the operator product expansion up to the vacuum condensates of $13$ in a consistent way. The predicted masses support assigning the $P_c(4312)$ to be ...
[ { "created": "Tue, 7 May 2019 09:10:17 GMT", "version": "v1" }, { "created": "Mon, 10 Jun 2019 07:55:52 GMT", "version": "v2" }, { "created": "Tue, 1 Oct 2019 12:15:26 GMT", "version": "v3" }, { "created": "Sat, 21 Dec 2019 13:27:35 GMT", "version": "v4" } ]
2020-02-27
[ [ "Wang", "Zhi-Gang", "" ] ]
In this article, we restudy the ground state mass spectrum of the diquark-diquark-antiquark type $uudc\bar{c}$ pentaquark states with the QCD sum rules by carrying out the operator product expansion up to the vacuum condensates of $13$ in a consistent way. The predicted masses support assigning the $P_c(4312)$ to be th...
2302.07149
Mohammed Boukidi
Hamza Abouabid (1), Abdesslam Arhrib (1), Rachid Benbrik (2), Mohammed Boukidi (2), Jaouad El Falaki (3)((1) Universit\'e Abdelmalek Essaadi, FSTT, Tangier, Morocco, (2) Polydisciplinary Faculty, Laboratory of Fundamental and Applied Physics, Cadi Ayyad University, Sidi Bouzid, Safi, Morocco, (3) LPTHE, Physics...
The oblique parameters in the 2HDM with Vector-Like Quarks: Confronting $M_W$ CDF-II Anomaly
37 pages, 13 figures, more discussions added and references updated, version published in JPG
null
10.1088/1361-6471/ad3f34
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
The CDF collaboration has released a new measurement of the $W$ boson mass using their complete data set with 8.8 fb$^{-1}$ in $p\bar{p}$ collisions. This result deviates from the Standard Model prediction by around 7$\sigma$. We explain how the two Higgs doublet model (2HDM) with vector-like quarks is affected by th...
[ { "created": "Tue, 14 Feb 2023 15:58:49 GMT", "version": "v1" }, { "created": "Wed, 17 Apr 2024 14:29:09 GMT", "version": "v2" } ]
2024-04-18
[ [ "Abouabid", "Hamza", "" ], [ "Arhrib", "Abdesslam", "" ], [ "Benbrik", "Rachid", "" ], [ "Boukidi", "Mohammed", "" ], [ "Falaki", "Jaouad El", "" ] ]
The CDF collaboration has released a new measurement of the $W$ boson mass using their complete data set with 8.8 fb$^{-1}$ in $p\bar{p}$ collisions. This result deviates from the Standard Model prediction by around 7$\sigma$. We explain how the two Higgs doublet model (2HDM) with vector-like quarks is affected by the ...
1510.06412
Keith Olive
Keith A. Olive
Supersymmetric Dark Matter after Run I at the LHC: From a TeV to a PeV
22 pages, 21 figures, prepared for the Proceedings of the 18th International Conference From the Planck Scale to the Electroweak Scale, 25-29 May 2015, Ioannina, Greece
null
null
FTPI-MINN-15/45, UMN-TH-3508/15
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The absence of low energy supersymmetry in run I data at the LHC has pushed the nominal scale for supersymmetry beyond a TeV. While this is consistent with the discovery of the Higgs boson at \approx 125 GeV, simple models with scalar and gaugino mass universality are being pushed into corners of parameter space. Som...
[ { "created": "Wed, 21 Oct 2015 20:11:16 GMT", "version": "v1" } ]
2015-10-23
[ [ "Olive", "Keith A.", "" ] ]
The absence of low energy supersymmetry in run I data at the LHC has pushed the nominal scale for supersymmetry beyond a TeV. While this is consistent with the discovery of the Higgs boson at \approx 125 GeV, simple models with scalar and gaugino mass universality are being pushed into corners of parameter space. Some ...
hep-ph/9203201
null
M. Dine, R.G. Leigh, P. Huet, A.D. Linde and D.A. Linde
Comments on the Electroweak Phase Transition
14 pages, 2 figures (not included)
Phys.Lett.B283:319-325,1992
10.1016/0370-2693(92)90026-Z
null
hep-ph
null
We report on an investigation of various problems related to the theory of the electroweak phase transition. This includes a determination of the nature of the phase transition, a discussion of the possible role of higher order radiative corrections and the theory of the formation and evolution of the bubbles of the ...
[ { "created": "Mon, 24 Feb 1992 20:07:00 GMT", "version": "v1" } ]
2009-09-29
[ [ "Dine", "M.", "" ], [ "Leigh", "R. G.", "" ], [ "Huet", "P.", "" ], [ "Linde", "A. D.", "" ], [ "Linde", "D. A.", "" ] ]
We report on an investigation of various problems related to the theory of the electroweak phase transition. This includes a determination of the nature of the phase transition, a discussion of the possible role of higher order radiative corrections and the theory of the formation and evolution of the bubbles of the ne...
2003.09181
Zhan-Wei Liu
Zhan-Wei Liu, Jia-Jun Wu, Derek B. Leinweber, Anthony W. Thomas
Kaonic Hydrogen and Deuterium in Hamiltonian Effective Field Theory
7 pages, 3 figures, published version
Phys. Lett. B 808 (2020) 135652
10.1016/j.physletb.2020.135652
ADP-20-8/T1118
hep-ph hep-ex nucl-ex nucl-th
http://creativecommons.org/licenses/by/4.0/
The anti-kaon nucleon scattering lengths resulting from a Hamiltonian effective field theory analysis of experimental data and lattice QCD studies are presented. The same Hamiltonian is then used to compute the scattering length for the $K^- d$ system, taking careful account of the effects of recoil on the energy at ...
[ { "created": "Fri, 20 Mar 2020 10:37:47 GMT", "version": "v1" }, { "created": "Wed, 29 Jul 2020 04:33:51 GMT", "version": "v2" } ]
2020-07-30
[ [ "Liu", "Zhan-Wei", "" ], [ "Wu", "Jia-Jun", "" ], [ "Leinweber", "Derek B.", "" ], [ "Thomas", "Anthony W.", "" ] ]
The anti-kaon nucleon scattering lengths resulting from a Hamiltonian effective field theory analysis of experimental data and lattice QCD studies are presented. The same Hamiltonian is then used to compute the scattering length for the $K^- d$ system, taking careful account of the effects of recoil on the energy at wh...
2311.17149
Taylor Murphy
Diyar Agin, Benjamin Fuks, Mark D. Goodsell, Taylor Murphy
Monojets reveal overlapping excesses for light compressed higgsinos
7 pages, 2 figures. Updated to resemble Phys. Lett. B Version of Record
Phys. Lett. B 853 (2024) 138597
10.1016/j.physletb.2024.138597
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The ATLAS and CMS collaborations have recently presented results of searches for compressed electroweakinos in final states including soft leptons. These searches are sensitive to mass splittings ranging from quite small values of about 5 GeV to O(10) GeV, which are endemic to scenarios with wino-like and higgsino-li...
[ { "created": "Tue, 28 Nov 2023 19:00:01 GMT", "version": "v1" }, { "created": "Fri, 26 Apr 2024 14:34:39 GMT", "version": "v2" } ]
2024-04-29
[ [ "Agin", "Diyar", "" ], [ "Fuks", "Benjamin", "" ], [ "Goodsell", "Mark D.", "" ], [ "Murphy", "Taylor", "" ] ]
The ATLAS and CMS collaborations have recently presented results of searches for compressed electroweakinos in final states including soft leptons. These searches are sensitive to mass splittings ranging from quite small values of about 5 GeV to O(10) GeV, which are endemic to scenarios with wino-like and higgsino-like...
hep-ph/9911335
Gennaro Corcella
Gennaro Corcella (Milano), Michael H. Seymour (RAL)
Simulations of Top Production and Decay at the Linear Collider
6 pages, 3 figures. Talk given at the 2nd ECFA/DESY Study on Physics and Detectors for a Linear Electron-Positron Collider, LNF, Frascati, Italy, 8-10 November 1998
null
null
BICOCCA-FT-99-38, RAL-TR-1999-076
hep-ph
null
We review the present status of simulations of top production and decay in the HERWIG event generator. We show the phenomenological impact of the recently-implemented matrix-element corrections to top decays for e+e- collisions at 360 GeV and discuss possible further improvements for studies of future experiments at ...
[ { "created": "Fri, 12 Nov 1999 18:18:00 GMT", "version": "v1" } ]
2007-05-23
[ [ "Corcella", "Gennaro", "", "Milano" ], [ "Seymour", "Michael H.", "", "RAL" ] ]
We review the present status of simulations of top production and decay in the HERWIG event generator. We show the phenomenological impact of the recently-implemented matrix-element corrections to top decays for e+e- collisions at 360 GeV and discuss possible further improvements for studies of future experiments at th...
0903.2329
Omar Benhar
Omar Benhar and Davide Meloni
Impact of nuclear effects on the determination of the nucleon axial mass
4 pages, three figures
Phys.Rev.D80:073003,2009
10.1103/PhysRevD.80.073003
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We analize the influence of nuclear effects on the determination of the nucleon axial mass from nuclear cross sections. Our work is based on a formalism widely applied to describe electron-nucleus scattering data in the impulse approximation regime. The results of numerical calculations show that correlation effects,...
[ { "created": "Fri, 13 Mar 2009 08:24:02 GMT", "version": "v1" } ]
2009-10-29
[ [ "Benhar", "Omar", "" ], [ "Meloni", "Davide", "" ] ]
We analize the influence of nuclear effects on the determination of the nucleon axial mass from nuclear cross sections. Our work is based on a formalism widely applied to describe electron-nucleus scattering data in the impulse approximation regime. The results of numerical calculations show that correlation effects, n...
hep-ph/0503048
Grzegorz Wilk
O.V.Utyuzh, G.Wilk and Z.Wlodarczyk
Multiparticle production processes from the Information Theory point of view
Talk given at 4th Budapest Winter School On Heavy Ion Physics (2004) 16 pages, 5 figures; version published in APH (HIP)
Acta Phys.Hung. A25 (2006) 65-81
10.1556/APH.25.2006.1.6
null
hep-ph nucl-th
null
We look at multiparticle production processes from the Information Theory point of view, both in its extensive and nonextensive versions. Examples of both symmetric (like pp or AA) and asymmetric (like pA) collisions are considered showing that some ways of description of experimental data used in the literature are ...
[ { "created": "Fri, 4 Mar 2005 12:29:39 GMT", "version": "v1" }, { "created": "Sat, 5 Mar 2005 14:43:59 GMT", "version": "v2" }, { "created": "Mon, 14 Mar 2005 14:16:15 GMT", "version": "v3" }, { "created": "Sat, 7 May 2005 14:48:13 GMT", "version": "v4" }, { "crea...
2009-11-11
[ [ "Utyuzh", "O. V.", "" ], [ "Wilk", "G.", "" ], [ "Wlodarczyk", "Z.", "" ] ]
We look at multiparticle production processes from the Information Theory point of view, both in its extensive and nonextensive versions. Examples of both symmetric (like pp or AA) and asymmetric (like pA) collisions are considered showing that some ways of description of experimental data used in the literature are of...
1305.3843
S. Descotes-Genon
V. Bernard (IPN Orsay), S. Descotes-Genon (LPT Orsay), M. Knecht (CPT Marseille)
Isospin breaking in the phases of the Ke4 form factors
48 pages, 7 figures
null
10.1140/epjc/s10052-013-2478-7
CPT-P001-2013, LPT-ORSAY/13-35
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Isospin breaking in the Kl4 form factors induced by the difference between charged and neutral pion masses is studied. Starting from suitably subtracted dispersion representations, the form factors are constructed in an iterative way up to two loops in the low-energy expansion by implementing analyticity, crossing, a...
[ { "created": "Thu, 16 May 2013 15:26:22 GMT", "version": "v1" } ]
2015-06-16
[ [ "Bernard", "V.", "", "IPN Orsay" ], [ "Descotes-Genon", "S.", "", "LPT Orsay" ], [ "Knecht", "M.", "", "CPT\n Marseille" ] ]
Isospin breaking in the Kl4 form factors induced by the difference between charged and neutral pion masses is studied. Starting from suitably subtracted dispersion representations, the form factors are constructed in an iterative way up to two loops in the low-energy expansion by implementing analyticity, crossing, and...
hep-ph/9807407
Jerry Franklin
Jerrold Franklin
Comment on Octet Baryon Magnetic Moments in the Chiral Quark Model with Configuration Mixing
5 pages, Latex file
Phys.Rev. D61 (2000) 098301
10.1103/PhysRevD.61.098301
TUHE9871
hep-ph
null
The importance of exchange currents, and of conserving isotopic spin at both the quark and baryon levels in application of the chiral quark model to any calculation of baryon magnetic moments is emphasized.
[ { "created": "Fri, 17 Jul 1998 19:08:57 GMT", "version": "v1" } ]
2009-10-31
[ [ "Franklin", "Jerrold", "" ] ]
The importance of exchange currents, and of conserving isotopic spin at both the quark and baryon levels in application of the chiral quark model to any calculation of baryon magnetic moments is emphasized.
1607.02142
Javier Fuentes-Mart\'in
Javier Fuentes-Martin, Jorge Portoles, Pedro Ruiz-Femenia
Integrating out heavy particles with functional methods: a simplified framework
24 pages. Uses feynMF package
JHEP 1609 (2016) 156
10.1007/JHEP09(2016)156
IFIC/16-28, TUM-HEP-1047/16
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a systematic procedure to obtain the one-loop low-energy effective Lagrangian resulting from integrating out the heavy fields of a given ultraviolet theory. We show that the matching coefficients are determined entirely by the hard region of the functional determinant involving the heavy fields. This repre...
[ { "created": "Thu, 7 Jul 2016 20:00:01 GMT", "version": "v1" } ]
2016-10-03
[ [ "Fuentes-Martin", "Javier", "" ], [ "Portoles", "Jorge", "" ], [ "Ruiz-Femenia", "Pedro", "" ] ]
We present a systematic procedure to obtain the one-loop low-energy effective Lagrangian resulting from integrating out the heavy fields of a given ultraviolet theory. We show that the matching coefficients are determined entirely by the hard region of the functional determinant involving the heavy fields. This represe...
2406.05102
Giacomo Polesello
Roy Aleksan, Emmanuel Perez, Giacomo Polesello, Nicol\`o Valle
Timing-based mass measurement of exotic long-lived particles at the FCC-ee
16 pages, 11 figures, 1 table
null
null
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
The very high luminosity run foreseen at the $Z$-pole for the FCC-ee will allow the detection in $Z$ decays of new particles with very low couplings to the Standard Model. These particles will have measurable flight paths before they decay. If the timing and the position of the decay vertex can be measured with high ...
[ { "created": "Mon, 3 Jun 2024 12:35:33 GMT", "version": "v1" } ]
2024-06-10
[ [ "Aleksan", "Roy", "" ], [ "Perez", "Emmanuel", "" ], [ "Polesello", "Giacomo", "" ], [ "Valle", "Nicolò", "" ] ]
The very high luminosity run foreseen at the $Z$-pole for the FCC-ee will allow the detection in $Z$ decays of new particles with very low couplings to the Standard Model. These particles will have measurable flight paths before they decay. If the timing and the position of the decay vertex can be measured with high pr...
1102.0392
Marco Ciuchini
Marco Ciuchini, Maurizio Pierini and Luca Silvestrini
Theoretical uncertainty in sin 2beta: An update
8 pages, 2 figures, 3 tables, Proceedings of CKM2010, the 6th International Workshop on the CKM Unitarity Triangle, University of Warwick, UK, 6-10 September 2010
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The source of theoretical uncertainty in the extraction of sin 2beta from the measurement of the golden channel Bd -> J/psi K0 is briefly reviewed. An updated estimate of this uncertainty based on SU(3) flavour symmetry and the measurement of the decay Bd -> J/psi pi0 is also presented.
[ { "created": "Wed, 2 Feb 2011 09:53:57 GMT", "version": "v1" } ]
2011-02-03
[ [ "Ciuchini", "Marco", "" ], [ "Pierini", "Maurizio", "" ], [ "Silvestrini", "Luca", "" ] ]
The source of theoretical uncertainty in the extraction of sin 2beta from the measurement of the golden channel Bd -> J/psi K0 is briefly reviewed. An updated estimate of this uncertainty based on SU(3) flavour symmetry and the measurement of the decay Bd -> J/psi pi0 is also presented.
hep-ph/0506285
Matteo Beccaria
Matteo Beccaria
Sudakov Expansions and Top Quark Physics at LHC
4 pages, PostScript file
null
10.1063/1.2125634
XVII Incontri di Fisica delle Alte Energie - IFAE 2005 Catania, 30/3 - 2/4 2005
hep-ph
null
We review some peculiar features of Sudakov expansions in the calculation of electroweak radiative corrections in the MSSM at high energy. We give specific examples and consider in particular the process b g -> t W of single top quark production relevant for the top quark physics programme at LHC.
[ { "created": "Tue, 28 Jun 2005 08:30:13 GMT", "version": "v1" } ]
2015-06-25
[ [ "Beccaria", "Matteo", "" ] ]
We review some peculiar features of Sudakov expansions in the calculation of electroweak radiative corrections in the MSSM at high energy. We give specific examples and consider in particular the process b g -> t W of single top quark production relevant for the top quark physics programme at LHC.
hep-ph/9408247
Andrei Linde
V.V.Kopenkin, A.K.Managadze, I.V.Rakobolskaya, T.M.Roganova
Alignment in Gamma-Hadron Families of Cosmic Rays
15 pages, 2 tables, 6 figures (not included), Stanford University preprint SU-ITP-94-25
Phys. Rev. D 52, 2766 (1995)
10.1103/PhysRevD.52.2766
null
hep-ph hep-th nucl-th
null
Alignment of main fluxes of energy in a target plane is found in families of cosmic ray particles detected in deep lead X-ray chambers. The fraction of events with alignment is unexpectedly large for families with high energy and large number of hadrons. This can be considered as evidence for the existence of coplana...
[ { "created": "Sat, 6 Aug 1994 00:22:54 GMT", "version": "v1" } ]
2016-08-24
[ [ "Kopenkin", "V. V.", "" ], [ "Managadze", "A. K.", "" ], [ "Rakobolskaya", "I. V.", "" ], [ "Roganova", "T. M.", "" ] ]
Alignment of main fluxes of energy in a target plane is found in families of cosmic ray particles detected in deep lead X-ray chambers. The fraction of events with alignment is unexpectedly large for families with high energy and large number of hadrons. This can be considered as evidence for the existence of coplanar ...
1705.05388
Farinaldo Queiroz
Miguel D. Campos, D. Cogollo, Manfred Lindner, T. Melo, Farinaldo S. Queiroz, Werner Rodejohann
Neutrino Masses and Absence of Flavor Changing Interactions in the 2HDM from Gauge Principles
54 pages, 10 figures
null
10.1007/JHEP08(2017)092
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We propose several Two Higgs Doublet Models with the addition of an Abelian gauge group which free the usual framework from flavor changing neutral interactions and explain neutrino masses through the seesaw mechanism. We discuss the kinetic and mass-mixing gripping phenomenology which encompass several constraints c...
[ { "created": "Mon, 15 May 2017 18:00:07 GMT", "version": "v1" } ]
2017-09-13
[ [ "Campos", "Miguel D.", "" ], [ "Cogollo", "D.", "" ], [ "Lindner", "Manfred", "" ], [ "Melo", "T.", "" ], [ "Queiroz", "Farinaldo S.", "" ], [ "Rodejohann", "Werner", "" ] ]
We propose several Two Higgs Doublet Models with the addition of an Abelian gauge group which free the usual framework from flavor changing neutral interactions and explain neutrino masses through the seesaw mechanism. We discuss the kinetic and mass-mixing gripping phenomenology which encompass several constraints com...
1603.05932
Oscar Moreno
O. Moreno, T. W. Donnelly
Elastic vector and axial scattering of weakly interacting particles off nuclei
11 pages, 14 figures
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We analyze the elastic scattering of particles interacting with nuclei through vector and axial currents with overall couplings of the order of the Standard Model weak interaction, or smaller; the dominant contribution to the elastic cross section is identified as the coherent component and is therefore spin-independ...
[ { "created": "Thu, 17 Mar 2016 16:25:26 GMT", "version": "v1" } ]
2016-03-21
[ [ "Moreno", "O.", "" ], [ "Donnelly", "T. W.", "" ] ]
We analyze the elastic scattering of particles interacting with nuclei through vector and axial currents with overall couplings of the order of the Standard Model weak interaction, or smaller; the dominant contribution to the elastic cross section is identified as the coherent component and is therefore spin-independen...
hep-ph/9801342
Shinohara Tadatomi
I.S.Sogami, K.Nishida, H.Tanaka, T.Shinohara (Kyoto Sangyo University)
Approximate Sum Rules of CKM Matrix Elements from Quasi-Democratic Mass Matrices
Latex, 15 pages, no figures
Prog.Theor.Phys.99:281-292,1998
10.1143/PTP.99.281
null
hep-ph
null
To extract sum rules of CKM matrix elements, eigenvalue problems for quasi-democratic mass matrices are solved in the first order perturbation approximation with respect to small deviations from the democratic limit. Mass spectra of up and down quark sectors and the CKM matrix are shown to have clear and distinctive ...
[ { "created": "Mon, 19 Jan 1998 12:14:23 GMT", "version": "v1" } ]
2014-11-17
[ [ "Sogami", "I. S.", "", "Kyoto Sangyo University" ], [ "Nishida", "K.", "", "Kyoto Sangyo University" ], [ "Tanaka", "H.", "", "Kyoto Sangyo University" ], [ "Shinohara", "T.", "", "Kyoto Sangyo University" ] ]
To extract sum rules of CKM matrix elements, eigenvalue problems for quasi-democratic mass matrices are solved in the first order perturbation approximation with respect to small deviations from the democratic limit. Mass spectra of up and down quark sectors and the CKM matrix are shown to have clear and distinctive hi...
hep-ph/0608108
Jaroslaw Nowak
Jaroslaw A. Nowak and Jan T. Sobczyk
Hadron production in Wroclaw neutrino event generator
Presented at 20th Max Born Symposium: Nuclear Effects in Neutrino Interactions, Wroclaw, Poland, 7-10 Dec 2005
Acta Phys.Polon. B37 (2006) 2371-2378
null
null
hep-ph hep-ex
null
Results from the Wroclaw Monte Carlo neutrino generator of events are reported. Predictions for charged hadron multiplicities, neutral pion and strange particle production are presented and compared with available data.
[ { "created": "Thu, 10 Aug 2006 11:07:46 GMT", "version": "v1" } ]
2007-05-23
[ [ "Nowak", "Jaroslaw A.", "" ], [ "Sobczyk", "Jan T.", "" ] ]
Results from the Wroclaw Monte Carlo neutrino generator of events are reported. Predictions for charged hadron multiplicities, neutral pion and strange particle production are presented and compared with available data.
hep-ph/9607278
Copenhagen Bennett
D.L. Bennett, H.B. Nielsen (The Niels Bohr Institute)
Gauge Couplings calculated from Multiple Point Criticality yield $\alpha^{-1}=136._8\pm 9$: At Last the Elusive Case of $U(1)$
4 figures, 85 pages, accepted for publication in Intl. J. Mod. Phys. A, this is a second replacement that should correct the lack of references in the original version
Int.J.Mod.Phys. A14 (1999) 3313-3385
10.1142/S0217751X9900155X
NBI-HE-96-29
hep-ph
null
We calculate the $U(1)$ continuum gauge coupling using the values of action parameters at the multiple point in the phase diagram of a lattice gauge theory. The multiple point is where a maximum number of phases convene. We obtain for the running inverse finestructure constant the values $\alpha_1^{-1}=56\pm 5$ and $...
[ { "created": "Wed, 10 Jul 1996 13:07:04 GMT", "version": "v1" }, { "created": "Sun, 14 Jul 1996 18:01:00 GMT", "version": "v2" } ]
2009-10-28
[ [ "Bennett", "D. L.", "", "The Niels Bohr Institute" ], [ "Nielsen", "H. B.", "", "The Niels Bohr Institute" ] ]
We calculate the $U(1)$ continuum gauge coupling using the values of action parameters at the multiple point in the phase diagram of a lattice gauge theory. The multiple point is where a maximum number of phases convene. We obtain for the running inverse finestructure constant the values $\alpha_1^{-1}=56\pm 5$ and $\a...
2406.00756
Daeho Park
Daeho Park, Su Houng Lee
An AI-Inspired Numerical Method in the Quark Model: Application to Finding the Wave Functions for Heavy Tetraquark States
7 pages, 5 figures
null
null
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
The current ongoing advancements in AI have shed light on the landscape of numerical analysis in science. Inspired by the path of achievement of AI, we have developed a method to construct accurate ground state wave functions of multiquark configurations within a quark model. We successfully tested our method through...
[ { "created": "Sun, 2 Jun 2024 14:18:28 GMT", "version": "v1" } ]
2024-06-04
[ [ "Park", "Daeho", "" ], [ "Lee", "Su Houng", "" ] ]
The current ongoing advancements in AI have shed light on the landscape of numerical analysis in science. Inspired by the path of achievement of AI, we have developed a method to construct accurate ground state wave functions of multiquark configurations within a quark model. We successfully tested our method through c...
hep-ph/0011002
Serguei Alekhine
Alekhin Sergey (IHEP, Protvino)
Global fit to the charged leptons DIS data: \boldmath{$\alpha_{\rm s}$,} parton distributions, and high twists
34 pages, REVTeX, 14 figures (EPS)
Phys.Rev. D63 (2001) 094022
null
null
hep-ph
null
We perform the NLO QCD analysis of the world data on inclusive deep inelastic scattering cross sections of charged leptons off the proton and the deuterium targets. The parton distributions, the value of strong coupling constant $\alpha_{\rm s}$, and the twist 4 contributions to the structure functions $F_2$ and $F_{...
[ { "created": "Wed, 1 Nov 2000 01:07:28 GMT", "version": "v1" } ]
2007-05-23
[ [ "Sergey", "Alekhin", "", "IHEP, Protvino" ] ]
We perform the NLO QCD analysis of the world data on inclusive deep inelastic scattering cross sections of charged leptons off the proton and the deuterium targets. The parton distributions, the value of strong coupling constant $\alpha_{\rm s}$, and the twist 4 contributions to the structure functions $F_2$ and $F_{\r...
hep-ph/0703261
Juan Antonio Aguilar-Saavedra
F. del Aguila, J. A. Aguilar-Saavedra, R. Pittau
Heavy neutrino signals at large hadron colliders
Latex 36 pages, 49 PS figures. Major extension incorporating analysis for e+- e+-, e+- mu+- and e+- mu-+ final states. Final version to appear in JHEP
JHEP0710:047,2007
10.1088/1126-6708/2007/10/047
null
hep-ph
null
We study the LHC discovery potential for heavy Majorana neutrino singlets in the process pp -> W+ -> l+ N -> l+ l+ jj (l=e,mu) plus its charge conjugate. With a fast detector simulation we show that backgrounds involving two like-sign charged leptons are not negligible and, moreover, they cannot be eliminated with si...
[ { "created": "Fri, 23 Mar 2007 19:58:43 GMT", "version": "v1" }, { "created": "Sat, 14 Apr 2007 11:07:58 GMT", "version": "v2" }, { "created": "Thu, 23 Aug 2007 17:55:09 GMT", "version": "v3" }, { "created": "Wed, 3 Oct 2007 22:13:43 GMT", "version": "v4" } ]
2008-11-26
[ [ "del Aguila", "F.", "" ], [ "Aguilar-Saavedra", "J. A.", "" ], [ "Pittau", "R.", "" ] ]
We study the LHC discovery potential for heavy Majorana neutrino singlets in the process pp -> W+ -> l+ N -> l+ l+ jj (l=e,mu) plus its charge conjugate. With a fast detector simulation we show that backgrounds involving two like-sign charged leptons are not negligible and, moreover, they cannot be eliminated with simp...
0807.4922
Takayuki Kubo
Masaki Asano, Takayuki Kubo, Shigeki Matsumoto and Masato Senami
Light Higgs boson scenario in the SUSY seesaw model
17 pages, 5 figures
Phys. Rev. D 80, 095017 (2009)
10.1103/PhysRevD.80.095017
UT-HET 012, KEK-TH-1264
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
It is demonstrated that the light Higgs boson scenario, which the lightest Higgs mass is less than the LEP bound, mh > 114.4 GeV, is consistent with the SUSY seesaw model. With the assumptions of the universal right-handed neutrino mass and the hierarchical mass spectrum of the ordinary neutrinos, the bounds for the ...
[ { "created": "Wed, 30 Jul 2008 19:06:05 GMT", "version": "v1" } ]
2013-05-29
[ [ "Asano", "Masaki", "" ], [ "Kubo", "Takayuki", "" ], [ "Matsumoto", "Shigeki", "" ], [ "Senami", "Masato", "" ] ]
It is demonstrated that the light Higgs boson scenario, which the lightest Higgs mass is less than the LEP bound, mh > 114.4 GeV, is consistent with the SUSY seesaw model. With the assumptions of the universal right-handed neutrino mass and the hierarchical mass spectrum of the ordinary neutrinos, the bounds for the ri...
1611.08786
Ai-Jun Ma
Ai-Jun Ma, Ya Li, Wen-Fei Wang and Zhen-Jun Xiao
The quasi-two-body decays $B_{(s)} \to (D_{(s)},\bar{D}_{(s)}) \rho \to (D_{(s)}, \bar{D}_{(s)})\pi \pi$ in the perturbative QCD factorization approach
17 pages, 3 figures and 2 tables. matching the published version
Nucl.Phys. B923 (2017) 54-72
10.1016/j.nuclphysb.2017.07.014
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this paper, we studied the $B_{(s)} \to (D_{(s)},\bar{D}_{(s)}) \rho \to (D_{(s)}, \bar{D}_{(s)})\pi \pi$ decays by employing a framework for the quasi-two-body decays in the perturbative QCD (PQCD) factorization approach. We use the two-pion distribution amplitudes $\Phi_{\pi\pi}$, which contains both resonant an...
[ { "created": "Sun, 27 Nov 2016 04:43:24 GMT", "version": "v1" }, { "created": "Tue, 14 Feb 2017 07:17:24 GMT", "version": "v2" }, { "created": "Wed, 14 Jun 2017 12:22:59 GMT", "version": "v3" }, { "created": "Fri, 15 Sep 2017 03:08:14 GMT", "version": "v4" } ]
2017-09-18
[ [ "Ma", "Ai-Jun", "" ], [ "Li", "Ya", "" ], [ "Wang", "Wen-Fei", "" ], [ "Xiao", "Zhen-Jun", "" ] ]
In this paper, we studied the $B_{(s)} \to (D_{(s)},\bar{D}_{(s)}) \rho \to (D_{(s)}, \bar{D}_{(s)})\pi \pi$ decays by employing a framework for the quasi-two-body decays in the perturbative QCD (PQCD) factorization approach. We use the two-pion distribution amplitudes $\Phi_{\pi\pi}$, which contains both resonant and ...
2006.14388
Luciano Maiani prof
C. Becchi, A. Giachino, L. Maiani, E. Santopinto
A study of $c c\bar{c}\bar{c}$ tetraquark decays in 4 muons and in $D^{(*)} \bar{D}^{(*)}$ at LHC
comments added, new figure, new references
null
10.1016/j.physletb.2020.135952
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We perform a quantitative analysis of the decays of $cc\bar c\bar c$ tetraquarks with $J^{PC}=0^{++}, 2^{++}$ into 4 muons and into hidden- and open-charm mesons and estimate, for the first time, the fully charmed tetraquark decay width. The calculated cross section upper limit is $\sim 40$ fb for the 4 muons channel...
[ { "created": "Thu, 25 Jun 2020 13:23:14 GMT", "version": "v1" }, { "created": "Sun, 4 Oct 2020 05:53:57 GMT", "version": "v2" } ]
2020-12-30
[ [ "Becchi", "C.", "" ], [ "Giachino", "A.", "" ], [ "Maiani", "L.", "" ], [ "Santopinto", "E.", "" ] ]
We perform a quantitative analysis of the decays of $cc\bar c\bar c$ tetraquarks with $J^{PC}=0^{++}, 2^{++}$ into 4 muons and into hidden- and open-charm mesons and estimate, for the first time, the fully charmed tetraquark decay width. The calculated cross section upper limit is $\sim 40$ fb for the 4 muons channel, ...
1107.0559
Artem Lipatov
A.V. Lipatov, N.P. Zotov
Phenomenology of kt-factorization for inclusive top quark pair production at hadron colliders
8 pages, 2 figures
Phys. Lett. B 704, 189 (2011)
10.1016/j.physletb.2011.08.072
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the inclusive top quark pair production in proton-proton and proton-antiproton collisions at high energies in the framework of kt-factorization QCD approach. Our study is based on the off-shell partonic subprocesses g*g* -> QQ and q*q* -> QQ, where the transverse momentum of both incoming quarks and gl...
[ { "created": "Mon, 4 Jul 2011 08:32:22 GMT", "version": "v1" } ]
2015-05-28
[ [ "Lipatov", "A. V.", "" ], [ "Zotov", "N. P.", "" ] ]
We investigate the inclusive top quark pair production in proton-proton and proton-antiproton collisions at high energies in the framework of kt-factorization QCD approach. Our study is based on the off-shell partonic subprocesses g*g* -> QQ and q*q* -> QQ, where the transverse momentum of both incoming quarks and gluo...
1211.7267
Leonid Glozman
L. Ya. Glozman
Confinement, chiral symmetry breaking and the mass generation of hadrons
Invited talk at Light Cone 2012, 8-13 July, 2012, Cracow, Poland
null
null
null
hep-ph hep-lat nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A key question to QCD is what mechanism generates the hadron mass in the light quark sector, where both confinement and chiral symmetry breaking are in the game. Are confinement and chiral symmetry breaking in the vacuum uniquely interconnected? Can hadrons survive chiral symmetry restoration? If yes, what happens wi...
[ { "created": "Fri, 30 Nov 2012 14:38:39 GMT", "version": "v1" } ]
2012-12-03
[ [ "Glozman", "L. Ya.", "" ] ]
A key question to QCD is what mechanism generates the hadron mass in the light quark sector, where both confinement and chiral symmetry breaking are in the game. Are confinement and chiral symmetry breaking in the vacuum uniquely interconnected? Can hadrons survive chiral symmetry restoration? If yes, what happens with...
1712.05246
Kre\v{s}imir Kumeri\v{c}ki
Kresimir Kumericki, Timon Mede, Ivica Picek
Renormalizable SU(5) Completions of a Zee-type Neutrino Mass Model
LaTeX, 31 pages
Phys. Rev. D 97, 055012 (2018)
10.1103/PhysRevD.97.055012
ZTF-EP-17-07
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We explore the potential of a selected model of radiative neutrino masses to be implemented in a renormalizable SU(5) unification framework. The Zee-type model under consideration uncovers the SU(5) representations in which the new fields are embedded and which may contain also other light states leading to the unifi...
[ { "created": "Thu, 14 Dec 2017 14:26:18 GMT", "version": "v1" } ]
2018-03-14
[ [ "Kumericki", "Kresimir", "" ], [ "Mede", "Timon", "" ], [ "Picek", "Ivica", "" ] ]
We explore the potential of a selected model of radiative neutrino masses to be implemented in a renormalizable SU(5) unification framework. The Zee-type model under consideration uncovers the SU(5) representations in which the new fields are embedded and which may contain also other light states leading to the unifica...
1411.6975
Olga Solovtsova
A.V. Sidorov, O.P. Solovtsova
Polarized nonsinglet {Delta q}_3 and nonsinglet fragmentation function D^{pi+}_{u_v} in the analytic approach to QCD
7 pages, 8 figures, talk given at the XXII International Baldin Seminar on High Energy Physics Problems, September 15-20, 2014, JINR, Dubna, Russia. Some minor typos are corrected
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We discuss the application of an analytic approach called the analytic perturbation theory (APT) to the QCD analysis of DIS data. In particular, the results of the QCD analysis of a set of `fake' data on the polarized nonsinglet Delta{q3} and the nonsinglet fragmentation function D^{pi+}_{u_v} by using the Q^2-evolut...
[ { "created": "Tue, 25 Nov 2014 19:19:45 GMT", "version": "v1" }, { "created": "Thu, 15 Jan 2015 12:36:17 GMT", "version": "v2" } ]
2015-01-16
[ [ "Sidorov", "A. V.", "" ], [ "Solovtsova", "O. P.", "" ] ]
We discuss the application of an analytic approach called the analytic perturbation theory (APT) to the QCD analysis of DIS data. In particular, the results of the QCD analysis of a set of `fake' data on the polarized nonsinglet Delta{q3} and the nonsinglet fragmentation function D^{pi+}_{u_v} by using the Q^2-evolutio...
2002.09875
Quan-Yi Hu
Quan-Yi Hu, Ya-Dong Yang and Min-Di Zheng
Revisiting the $B$-physics anomalies in $R$-parity violating MSSM
10 pages, 8 figures, matches to the version published in EPJC
Eur. Phys. J. C 80, 365 (2020)
10.1140/epjc/s10052-020-7940-8
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In recent years, several deviations from the Standard Model predictions in semileptonic decays of $B$-meson might suggest the existence of new physics which would break the lepton-flavour universality. In this work, we have explored the possibility of using muon sneutrinos and right-handed sbottoms to solve these $B$...
[ { "created": "Sun, 23 Feb 2020 09:42:23 GMT", "version": "v1" }, { "created": "Wed, 4 Mar 2020 10:29:19 GMT", "version": "v2" }, { "created": "Thu, 7 May 2020 02:53:57 GMT", "version": "v3" } ]
2020-05-20
[ [ "Hu", "Quan-Yi", "" ], [ "Yang", "Ya-Dong", "" ], [ "Zheng", "Min-Di", "" ] ]
In recent years, several deviations from the Standard Model predictions in semileptonic decays of $B$-meson might suggest the existence of new physics which would break the lepton-flavour universality. In this work, we have explored the possibility of using muon sneutrinos and right-handed sbottoms to solve these $B$-p...
hep-ph/9406252
Taku Izubuchi
K. Hagiwara, T. Izubuchi, M. Tanaka and I. Watanabe
Gluon and Charm Distributions in the Photon
59 pages, REVTeX, PostScript figures appended, KEK-TH-376, KEK preprint 93-160, UT--659
Phys.Rev.D51:3197-3219,1995
10.1103/PhysRevD.51.3197
null
hep-ph
null
We study systematically the sensitivity of the photon structure function data on the gluon contents of the photon, by using the leading order Altarelli--Parisi (AP) equations. Charm quark contribution is studied in the quark parton model and by using the massive quark AP equations of Gl\"uck, Hoffmann and Reya. T...
[ { "created": "Wed, 8 Jun 1994 12:18:49 GMT", "version": "v1" } ]
2010-03-25
[ [ "Hagiwara", "K.", "" ], [ "Izubuchi", "T.", "" ], [ "Tanaka", "M.", "" ], [ "Watanabe", "I.", "" ] ]
We study systematically the sensitivity of the photon structure function data on the gluon contents of the photon, by using the leading order Altarelli--Parisi (AP) equations. Charm quark contribution is studied in the quark parton model and by using the massive quark AP equations of Gl\"uck, Hoffmann and Reya. The pre...
hep-ph/9501240
Paolo Nason
G. Altarelli (CERN), P. Nason (CERN), G. Ridolfi (CERN).
A Study of Ultraviolet Renormalon Ambiguities in the Determination of $\as$ from $\tau$ Decay
32 pages, epsfig.sty.
Z.Phys. C68 (1995) 257-268
10.1007/BF01566673
CERN-TH.7537/94, GeF-TH-1/95 and IFUM 489/FT
hep-ph
null
The divergent large-order behaviour of the perturbative series relevant for the determination of $\as$ from $\tau$ decay is controlled by the leading ultraviolet (UV) renormalon. Even in the absence of the first infrared (IR) renormalon, an ambiguity of order $\Lambda^2/m_\tau^2$ is introduced. We make a quantitative...
[ { "created": "Mon, 9 Jan 1995 11:23:47 GMT", "version": "v1" } ]
2016-09-01
[ [ "Altarelli", "G.", "", "CERN" ], [ "Nason", "P.", "", "CERN" ], [ "Ridolfi", "G.", "", "CERN" ], [ ".", "", "" ] ]
The divergent large-order behaviour of the perturbative series relevant for the determination of $\as$ from $\tau$ decay is controlled by the leading ultraviolet (UV) renormalon. Even in the absence of the first infrared (IR) renormalon, an ambiguity of order $\Lambda^2/m_\tau^2$ is introduced. We make a quantitative s...
2011.02469
Andrej Arbuzov
M.K. Volkov, A.B. Arbuzov, K. Nurlan, and A.A. Pivovarov
Fixing the vector coupling constant $g_\rho = 5.0$ in the NJL model and final-state interactions in processes $\rho \to e^+e^-[\mu^+\mu^-]$, $\rho \to \pi^+\pi^-$, $\tau \to \pi^-\pi^0\nu_\tau$, and $e^+e^-\to\pi^+\pi^-$
4 pages, 6 figures, misprints are corrected
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The possibility to use the width of the decay $\rho \to e^{+}e^{-}$ to fix the input parameter $g_\rho=5.0$ of the $SU(2) \times SU(2)$ chiral-symmetric Nambu--Jona-Lasinio model is discussed. It is shown that for a consistent simultaneous description of the processes $\rho \to e^{+}e^{-}$, $\rho \to \pi^{+}\pi^{-}$,...
[ { "created": "Wed, 4 Nov 2020 18:38:37 GMT", "version": "v1" }, { "created": "Thu, 5 Nov 2020 12:52:10 GMT", "version": "v2" } ]
2020-11-06
[ [ "Volkov", "M. K.", "" ], [ "Arbuzov", "A. B.", "" ], [ "Nurlan", "K.", "" ], [ "Pivovarov", "A. A.", "" ] ]
The possibility to use the width of the decay $\rho \to e^{+}e^{-}$ to fix the input parameter $g_\rho=5.0$ of the $SU(2) \times SU(2)$ chiral-symmetric Nambu--Jona-Lasinio model is discussed. It is shown that for a consistent simultaneous description of the processes $\rho \to e^{+}e^{-}$, $\rho \to \pi^{+}\pi^{-}$, $...
1707.02061
Toshitaka Tatsumi
Toshitaka Tatsumi
Inhomogeneous Chiral Phase in Quark Matter
8 pages,3 figures, Proc. of QCS2017 (Kyoto, Japan)
null
10.7566/JPSCP.20.011008
null
hep-ph astro-ph.HE nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Recent development of inhomogeneous chiral phase in Kyoto group is briefly reviewed. First, the nesting effect of the Fermi surface is emphasized as a key mechanism leading to inhomogeneous chiral phase. After introduction of inhomogeneous chiral phase, some topological aspect is discussed in 1+1 dimensions and in th...
[ { "created": "Fri, 7 Jul 2017 07:39:50 GMT", "version": "v1" } ]
2018-02-14
[ [ "Tatsumi", "Toshitaka", "" ] ]
Recent development of inhomogeneous chiral phase in Kyoto group is briefly reviewed. First, the nesting effect of the Fermi surface is emphasized as a key mechanism leading to inhomogeneous chiral phase. After introduction of inhomogeneous chiral phase, some topological aspect is discussed in 1+1 dimensions and in the ...
2109.04852
Gabriel Massoni Salla
Daniele Barducci, Enrico Bertuzzo, Giovanni Grilli di Cortona, Gabriel M. Salla
Dark Photon bounds in the dark EFT
22 pages; v2: Expanded discussion on the UV completion, version accepted for publication in JHEP
JHEP 12 (2021) 081
10.1007/JHEP12(2021)081
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Dark photons are massive abelian gauge bosons that interact with ordinary photons via a kinetic mixing with the hypercharge field strength tensor. This theory is probed by a variety of different experiments and limits are set on a combination of the dark photon mass and kinetic mixing parameter. These limits can howe...
[ { "created": "Fri, 10 Sep 2021 13:06:25 GMT", "version": "v1" }, { "created": "Tue, 30 Nov 2021 12:30:53 GMT", "version": "v2" } ]
2022-05-17
[ [ "Barducci", "Daniele", "" ], [ "Bertuzzo", "Enrico", "" ], [ "di Cortona", "Giovanni Grilli", "" ], [ "Salla", "Gabriel M.", "" ] ]
Dark photons are massive abelian gauge bosons that interact with ordinary photons via a kinetic mixing with the hypercharge field strength tensor. This theory is probed by a variety of different experiments and limits are set on a combination of the dark photon mass and kinetic mixing parameter. These limits can howeve...
hep-ph/9607271
Debajyoti Choudhury
Debajyoti Choudhury (MPI, Munich) and Maria Krawczyk (ITP, Warsaw)
Light Neutral Higgs Bosons at the Low Energy $\gamma \gamma $ Collider
8 pages (LaTeX), 7 figures (postscript versions included as a uuencoded tarred gzipped file)
Phys.Rev.D55:2774-2778,1997
10.1103/PhysRevD.55.2774
MPI-PTh/96-46, IFT-96/13
hep-ph
null
A light neutral Higgs boson in the framework of the general two Higgs doublet model (2HDM) is not excluded by existing data. We point out that it can be looked for at the proposed low energy $\gamma \gamma$ collider. Failure to detect one may lead to important limits on the parameters of the general 2HDM.
[ { "created": "Tue, 9 Jul 1996 21:05:53 GMT", "version": "v1" } ]
2011-04-15
[ [ "Choudhury", "Debajyoti", "", "MPI, Munich" ], [ "Krawczyk", "Maria", "", "ITP, Warsaw" ] ]
A light neutral Higgs boson in the framework of the general two Higgs doublet model (2HDM) is not excluded by existing data. We point out that it can be looked for at the proposed low energy $\gamma \gamma$ collider. Failure to detect one may lead to important limits on the parameters of the general 2HDM.
1103.2122
Markus Schulze
Kirill Melnikov and Markus Schulze
Top quark spin correlations at the Tevatron and the LHC
6 pages, 4 figures; reference added
Phys.Lett.B700:17-20,2011
10.1016/j.physletb.2011.04.043
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Spin correlations of top quarks produced in hadron collisions have not been observed experimentally with large significance. In this Letter, we propose a new variable that may enable demonstration of the existence of spin correlations with 3-4 sigma significance using just a few hundred dilepton events both at the Te...
[ { "created": "Thu, 10 Mar 2011 20:52:37 GMT", "version": "v1" }, { "created": "Mon, 21 Mar 2011 15:11:33 GMT", "version": "v2" } ]
2015-03-19
[ [ "Melnikov", "Kirill", "" ], [ "Schulze", "Markus", "" ] ]
Spin correlations of top quarks produced in hadron collisions have not been observed experimentally with large significance. In this Letter, we propose a new variable that may enable demonstration of the existence of spin correlations with 3-4 sigma significance using just a few hundred dilepton events both at the Teva...
hep-ph/0612292
Mario E. Gomez
John Ellis, Mario E. Gomez, Smaragda Lola
CP and Lepton-Number Violation in GUT Neutrino Models with Abelian Flavour Symmetries
30 pages, 6 figures
JHEP 0707:052,2007
10.1088/1126-6708/2007/07/052
CERN-PH-TH/2006-181
hep-ph
null
We study the possible magnitudes of CP and lepton-number-violating quantities in specific GUT models of massive neutrinos with different Abelian flavour groups, taking into account experimental constraints and requiring successful leptogenesis. We discuss SU(5) and flipped SU(5) models that are consistent with the pr...
[ { "created": "Thu, 21 Dec 2006 22:23:08 GMT", "version": "v1" }, { "created": "Wed, 18 Jul 2007 22:48:28 GMT", "version": "v2" } ]
2009-09-11
[ [ "Ellis", "John", "" ], [ "Gomez", "Mario E.", "" ], [ "Lola", "Smaragda", "" ] ]
We study the possible magnitudes of CP and lepton-number-violating quantities in specific GUT models of massive neutrinos with different Abelian flavour groups, taking into account experimental constraints and requiring successful leptogenesis. We discuss SU(5) and flipped SU(5) models that are consistent with the pres...
1101.3822
Alexey A. Petrov
Alexey A Petrov
CP-violation in charm
7 pages, presented at the 6th International Workshop on the CKM Unitarity Triangle (CKM2010), University of Warwick, UK, 6-10 September 2010
null
null
WSU-HEP-1004
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
I review recent results in theoretical and experimental analyses of CP-violation in charmed transitions, paying particular attention to constraints on parameters of beyond the Standard Model interactions.
[ { "created": "Thu, 20 Jan 2011 05:18:17 GMT", "version": "v1" } ]
2011-01-21
[ [ "Petrov", "Alexey A", "" ] ]
I review recent results in theoretical and experimental analyses of CP-violation in charmed transitions, paying particular attention to constraints on parameters of beyond the Standard Model interactions.
hep-ph/9807314
Zhang
Meng Ta-chung, R. Rittel, K. Tabelow and Zhang Yang
Formation of color-singlet gluon-clusters and inelastic diffractive scattering. Part II: Derivation of the $t$- and $M_x^2/s$-dependence of cross-sections in the SOC-approach
21 pages, 4 PS figures
null
null
null
hep-ph
null
The $t$-dependence and the $(M_x^2/s)$-dependence of the double differential cross-sections for inelastic diffractive scattering off proton-target are discussed. Here $t$ stands for the four-momentum-transfer squared, $M_x$ for the missing mass, and $\sqrt{s}$ for the total c.m.s. energy. It is shown, that the space-...
[ { "created": "Thu, 9 Jul 1998 18:27:14 GMT", "version": "v1" }, { "created": "Wed, 15 Jul 1998 15:22:35 GMT", "version": "v2" }, { "created": "Wed, 10 Feb 1999 17:19:19 GMT", "version": "v3" } ]
2007-05-23
[ [ "Ta-chung", "Meng", "" ], [ "Rittel", "R.", "" ], [ "Tabelow", "K.", "" ], [ "Yang", "Zhang", "" ] ]
The $t$-dependence and the $(M_x^2/s)$-dependence of the double differential cross-sections for inelastic diffractive scattering off proton-target are discussed. Here $t$ stands for the four-momentum-transfer squared, $M_x$ for the missing mass, and $\sqrt{s}$ for the total c.m.s. energy. It is shown, that the space-ti...
1706.08664
David Latimer
Kyle M. Whitcomb and David C. Latimer
Scattering from a quantum anapole at low energies
null
Am. J. Phys. 85, 932 (2017)
10.1119/1.5003377
null
hep-ph hep-th quant-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In quantum field theory, the photon-fermion vertex can be described in terms of four form factors which encode the static electromagnetic properties of the particle, namely its charge, magnetic dipole moment, electric dipole moment, and anapole moment. For Majorana fermions, only the anapole moment can be nonzero, a ...
[ { "created": "Tue, 27 Jun 2017 04:04:11 GMT", "version": "v1" } ]
2017-11-22
[ [ "Whitcomb", "Kyle M.", "" ], [ "Latimer", "David C.", "" ] ]
In quantum field theory, the photon-fermion vertex can be described in terms of four form factors which encode the static electromagnetic properties of the particle, namely its charge, magnetic dipole moment, electric dipole moment, and anapole moment. For Majorana fermions, only the anapole moment can be nonzero, a co...
2002.03590
Sinan Kuday
I. Hos, S. Kuday and H. Sayg{\i}n
The Observation of Jet Azimuthal Angular Decorrelation at FCC-ep
11 pages, 15 figures, 3 tables. Accepted by IJMPA in 13/02/2023
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Higher collision energies at future colliders may eventually lead to the falsification of standard fixed-order perturbation theory and linear evolutions due to non-linear structure of QCD at small-x. New physics researches that is strictly based on accurate jet measurements will undoubtedly have this observation know...
[ { "created": "Mon, 10 Feb 2020 08:12:46 GMT", "version": "v1" }, { "created": "Wed, 2 Sep 2020 09:12:32 GMT", "version": "v2" }, { "created": "Mon, 13 Feb 2023 12:41:44 GMT", "version": "v3" } ]
2023-02-14
[ [ "Hos", "I.", "" ], [ "Kuday", "S.", "" ], [ "Saygın", "H.", "" ] ]
Higher collision energies at future colliders may eventually lead to the falsification of standard fixed-order perturbation theory and linear evolutions due to non-linear structure of QCD at small-x. New physics researches that is strictly based on accurate jet measurements will undoubtedly have this observation known ...
hep-ph/9910272
Nathan Isgur
Nathan Isgur (Jefferson Lab)
Meson-like Baryons and the Spin-Orbit Puzzle
24 pages, 4 figures
Phys.Rev.D62:014025,2000
10.1103/PhysRevD.62.014025
JLAB-THY-99-30
hep-ph
null
I describe a special class of meson-like \Lambda_Q excited states and present evidence supporting the similarity of their spin-independent spectra to those of mesons. I then examine spin-dependent forces in these baryons, showing that predicted effects of spin-orbit forces are small for them for the same reason they ...
[ { "created": "Thu, 7 Oct 1999 17:23:26 GMT", "version": "v1" } ]
2014-11-17
[ [ "Isgur", "Nathan", "", "Jefferson Lab" ] ]
I describe a special class of meson-like \Lambda_Q excited states and present evidence supporting the similarity of their spin-independent spectra to those of mesons. I then examine spin-dependent forces in these baryons, showing that predicted effects of spin-orbit forces are small for them for the same reason they ar...
1404.3073
Bin Wang
Bin Wang, Zhu-Fang Cui, Wei-Min Sun and Hong-Shi Zong
A model study of the chiral phase diagram of QCD
15 pages, 6 figures. Few-Body Systems 2013
null
10.1007/s00601-013-0737-7
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this paper we study the chiral phase transition of QCD at finite temperature and density by using the rank-2 confining separable gluon propagator model in the framework of Dyson-Schwinger Equations. The critical end point is located at (T_CEP, {\mu}_CEP) = (69 MeV, 270.3 MeV). It is also found that the first order...
[ { "created": "Fri, 11 Apr 2014 11:10:32 GMT", "version": "v1" } ]
2016-11-02
[ [ "Wang", "Bin", "" ], [ "Cui", "Zhu-Fang", "" ], [ "Sun", "Wei-Min", "" ], [ "Zong", "Hong-Shi", "" ] ]
In this paper we study the chiral phase transition of QCD at finite temperature and density by using the rank-2 confining separable gluon propagator model in the framework of Dyson-Schwinger Equations. The critical end point is located at (T_CEP, {\mu}_CEP) = (69 MeV, 270.3 MeV). It is also found that the first order p...
hep-ph/9809357
Durmus Ali Demir
D. A. Demir, N. K. Pak
One-Loop Effects in Supergravity Models with an Additional U(1)
16 pages, 6 postscript figures
Phys.Rev. D57 (1998) 6609-6617
10.1103/PhysRevD.57.6609
null
hep-ph
null
For an Abelian extended Supergravity model, we investigate some important low energy parameters: \tan\beta, Z-Z' mixing angle, lightest CP-even Higgs mass bound, Z' mass, and effective \mu parameter. By integrating the RGE's from string scale down to the weak scale we constuct the scalar potential, and analyze the qu...
[ { "created": "Sun, 13 Sep 1998 13:54:35 GMT", "version": "v1" } ]
2009-10-31
[ [ "Demir", "D. A.", "" ], [ "Pak", "N. K.", "" ] ]
For an Abelian extended Supergravity model, we investigate some important low energy parameters: \tan\beta, Z-Z' mixing angle, lightest CP-even Higgs mass bound, Z' mass, and effective \mu parameter. By integrating the RGE's from string scale down to the weak scale we constuct the scalar potential, and analyze the quan...
1504.02409
Jeremie Quevillon
Aleksandra Drozd, John Ellis, J\'er\'emie Quevillon and Tevong You
Comparing EFT and Exact One-Loop Analyses of Non-Degenerate Stops
25 pages, v2 corrects three equations and some typos, with plot results and conclusions unchanged
null
null
KCL-PH-TH/2015-17, LCTS/2015-08, CERN-PH-TH/2015-072
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We develop a universal approach to the one-loop effective field theory (EFT) using the Covariant Derivative Expansion (CDE) method. We generalise previous results to include broader classes of UV models, showing how expressions previously obtained assuming degenerate heavy-particle masses can be extended to non-degen...
[ { "created": "Thu, 9 Apr 2015 18:17:50 GMT", "version": "v1" }, { "created": "Wed, 10 Feb 2016 18:07:42 GMT", "version": "v2" } ]
2016-02-11
[ [ "Drozd", "Aleksandra", "" ], [ "Ellis", "John", "" ], [ "Quevillon", "Jérémie", "" ], [ "You", "Tevong", "" ] ]
We develop a universal approach to the one-loop effective field theory (EFT) using the Covariant Derivative Expansion (CDE) method. We generalise previous results to include broader classes of UV models, showing how expressions previously obtained assuming degenerate heavy-particle masses can be extended to non-degener...
1806.09508
Sangjun Lee
Kiwoon Choi, Sangjun Lee, Hyeonseok Seong, Seokhoon Yun
Gamma-ray spectral modulations induced by photon-ALP-dark photon oscillations
12 pages, 3 figures. v3: realization of background dark photon gauge fields included; v4: PRD accepted version, figures updated, chi-square analysis presented in Sec. III, observational constraints revisited in Sec. IV C and D
Phys. Rev. D 101, 043007 (2020)
10.1103/PhysRevD.101.043007
CTPU-PTC-18-18, KIAS-P19027
hep-ph astro-ph.CO astro-ph.HE
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Recently it has been noticed that the Fermi-LAT data of gamma-rays from some galactic pulsars and supernova remnants reveal spectral modulations that might be explained by the conversion of photons to ALPs (axion-like particles) induced by the conventional ALP coupling to photon in the presence of galactic magnetic f...
[ { "created": "Mon, 25 Jun 2018 14:53:51 GMT", "version": "v1" }, { "created": "Wed, 27 Jun 2018 07:59:58 GMT", "version": "v2" }, { "created": "Fri, 3 May 2019 06:57:10 GMT", "version": "v3" }, { "created": "Sun, 17 May 2020 06:08:31 GMT", "version": "v4" } ]
2020-05-19
[ [ "Choi", "Kiwoon", "" ], [ "Lee", "Sangjun", "" ], [ "Seong", "Hyeonseok", "" ], [ "Yun", "Seokhoon", "" ] ]
Recently it has been noticed that the Fermi-LAT data of gamma-rays from some galactic pulsars and supernova remnants reveal spectral modulations that might be explained by the conversion of photons to ALPs (axion-like particles) induced by the conventional ALP coupling to photon in the presence of galactic magnetic fie...
1506.01410
Nobuchika Okada
Nobuchika Okada, Qaisar Shafi
$\mu$-Term Hybrid Inflation and Split Supersymmetry
10 pages, 5 figures, some minor changes
null
10.1016/j.physletb.2017.11.015
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider $\mu$-term hybrid inflation which, in its minimal format with gravity mediated supersymmetry breaking, leads to split supersymmetry. The MSSM $\mu$-term in this framework is larger than the gravitino mass $m_G$, and successful inflation requires $m_G$ (and hence also $|\mu|$) $\gtrsim 5 \times 10^7$ GeV, ...
[ { "created": "Wed, 3 Jun 2015 21:13:38 GMT", "version": "v1" }, { "created": "Mon, 26 Oct 2015 14:29:41 GMT", "version": "v2" } ]
2018-02-01
[ [ "Okada", "Nobuchika", "" ], [ "Shafi", "Qaisar", "" ] ]
We consider $\mu$-term hybrid inflation which, in its minimal format with gravity mediated supersymmetry breaking, leads to split supersymmetry. The MSSM $\mu$-term in this framework is larger than the gravitino mass $m_G$, and successful inflation requires $m_G$ (and hence also $|\mu|$) $\gtrsim 5 \times 10^7$ GeV, su...
1312.1631
Ernst Trojan
Ernst Trojan and George V. Vlasov
Reply to Comment on "Acoustics of tachyon Fermi gas"
4 pages, 1 suppl. figure
Phys. Rev. D 85, 128502 (2012)
10.1103/PhysRevD.85.128502
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In a paper appearing in this issue of Physical Review D, Burmistrov raises some critical comments on the thermodynamics of a cold tachyon Fermi gas [E. Trojan and G. V. Vlasov, Phys. Rev. D 83, 124013 (2011)]. However, apart from any possible theoretical speculation, there are the basic physical principles to test th...
[ { "created": "Thu, 5 Dec 2013 17:55:28 GMT", "version": "v1" } ]
2015-06-18
[ [ "Trojan", "Ernst", "" ], [ "Vlasov", "George V.", "" ] ]
In a paper appearing in this issue of Physical Review D, Burmistrov raises some critical comments on the thermodynamics of a cold tachyon Fermi gas [E. Trojan and G. V. Vlasov, Phys. Rev. D 83, 124013 (2011)]. However, apart from any possible theoretical speculation, there are the basic physical principles to test the ...
hep-ph/0110329
Dmitri Ryzhikh
D. A. Ryzhikh (ITEP, Moscow, Russia), K. A. Ter-Martirosyan (ITEP, Moscow, Russia)
Neutrino Mixing and Leptonic CP Phase in Neutrino Oscillations
null
JETP Lett. 74 (2001) 139-143; Erratum-ibid. 76 (2002) 401
10.1134/1.1410217
null
hep-ph
null
Oscillations of the Dirac neutrinos of three generations in vacuum are considered with allowance made for the effect of the CP-violating leptonic phase (analogue of the quark CP phase) in the lepton mixing matrix. The general formulas for the probabilities of neutrino transition from one sort to another in oscillatio...
[ { "created": "Thu, 25 Oct 2001 11:17:46 GMT", "version": "v1" }, { "created": "Mon, 12 Nov 2001 14:46:45 GMT", "version": "v2" }, { "created": "Wed, 14 Nov 2001 10:43:30 GMT", "version": "v3" } ]
2009-11-07
[ [ "Ryzhikh", "D. A.", "", "ITEP, Moscow, Russia" ], [ "Ter-Martirosyan", "K. A.", "", "ITEP,\n Moscow, Russia" ] ]
Oscillations of the Dirac neutrinos of three generations in vacuum are considered with allowance made for the effect of the CP-violating leptonic phase (analogue of the quark CP phase) in the lepton mixing matrix. The general formulas for the probabilities of neutrino transition from one sort to another in oscillations...
1511.09457
Thorben Graf
Thorben Graf, Juergen Schaffner-Bielich, Eduardo S. Fraga
Perturbative thermodynamics at nonzero isospin density for cold QCD
V2: Minor modifications; 5 pages, 6 figures
Phys. Rev. D 93, 085030 (2016)
10.1103/PhysRevD.93.085030
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We use next-to-leading-order in perturbation theory to investigate the effects of a finite isospin density on the thermodynamics of cold strongly interacting matter. Our results include nonzero quark masses and are compared to lattice data.
[ { "created": "Mon, 30 Nov 2015 20:29:12 GMT", "version": "v1" }, { "created": "Tue, 2 Aug 2016 16:41:23 GMT", "version": "v2" } ]
2016-08-03
[ [ "Graf", "Thorben", "" ], [ "Schaffner-Bielich", "Juergen", "" ], [ "Fraga", "Eduardo S.", "" ] ]
We use next-to-leading-order in perturbation theory to investigate the effects of a finite isospin density on the thermodynamics of cold strongly interacting matter. Our results include nonzero quark masses and are compared to lattice data.
hep-ph/9408400
Erwin Mirkes
J.H. K"uhn and E. Mirkes
Structure Functions and Distributions in Semileptonic Tau Decays
Presented by E. Mirkes at DPF94 Meeting, Albuquerque, New Mexico, August 2-6,1994. 5 pages (LaTex), 2 uuencoded figures appended, MAD/PH/848
null
null
null
hep-ph
null
Semileptonic decays of polarized $\tau$ leptons are investigated. The most general angular distribution of three meson final states ($\tau\rightarrow \pi\pi\nu,\,K\pi\nu,\, \pi\pi\pi\nu,\\ \,K\pi\pi\nu,\, KK\pi\nu,\, KKK\nu,\, \eta\pi\pi\nu,\,\ldots{}$) is discussed. It is shown, that the most general distribution ca...
[ { "created": "Wed, 31 Aug 1994 15:45:14 GMT", "version": "v1" } ]
2009-09-25
[ [ "K\"uhn", "J. H.", "" ], [ "Mirkes", "E.", "" ] ]
Semileptonic decays of polarized $\tau$ leptons are investigated. The most general angular distribution of three meson final states ($\tau\rightarrow \pi\pi\nu,\,K\pi\nu,\, \pi\pi\pi\nu,\\ \,K\pi\pi\nu,\, KK\pi\nu,\, KKK\nu,\, \eta\pi\pi\nu,\,\ldots{}$) is discussed. It is shown, that the most general distribution can ...
0706.0919
Zoltan Ligeti
Zoltan Ligeti
Mixing and CP violation in the D0 and Bs systems
Invited talk at the Flavor Physics and CP Violation Conference (FPCP 2007), Bled, Slovenia, 12-16 May 2007
ECONF C070512:021,2007
null
null
hep-ph
null
Recent developments for mixing and CP violation in the D0 and Bs systems are reviewed, including (i) the recently emerging evidence for D0-D0bar mixing and the interpretations of the measurements; (ii) the theoretical status of the calculations of Delta(Gamma_D) and Delta(m_D); (iii) some implications of the measurem...
[ { "created": "Thu, 7 Jun 2007 18:35:11 GMT", "version": "v1" } ]
2011-03-23
[ [ "Ligeti", "Zoltan", "" ] ]
Recent developments for mixing and CP violation in the D0 and Bs systems are reviewed, including (i) the recently emerging evidence for D0-D0bar mixing and the interpretations of the measurements; (ii) the theoretical status of the calculations of Delta(Gamma_D) and Delta(m_D); (iii) some implications of the measuremen...
hep-ph/0208242
Levan Babukhadia
L. Babukhadia and M. D. Scadron
Nucleon strangeness and spin crisis?
Accepted for publication in special issue of Hadronic Journal
Hadronic J. 26 (2003) 503-513
null
null
hep-ph
null
We summarize three alternative extensions of the quark-valence picture of nucleon strangeness and spin, including (1) gluon spin in QCD, (2) Bjorken sum rule and QCD, (3) D--E meson mixing and tadpole leakage. All three approaches suggest that ~40% of the nucleon's spin (as well as its momentum) resides with quarks, ...
[ { "created": "Mon, 26 Aug 2002 23:14:16 GMT", "version": "v1" }, { "created": "Wed, 13 Nov 2002 22:35:32 GMT", "version": "v2" } ]
2007-05-23
[ [ "Babukhadia", "L.", "" ], [ "Scadron", "M. D.", "" ] ]
We summarize three alternative extensions of the quark-valence picture of nucleon strangeness and spin, including (1) gluon spin in QCD, (2) Bjorken sum rule and QCD, (3) D--E meson mixing and tadpole leakage. All three approaches suggest that ~40% of the nucleon's spin (as well as its momentum) resides with quarks, bu...
2210.01733
Matteo Cerutti
Matteo Cerutti, Lorenzo Rossi, Simone Venturini, Alessandro Bacchetta, Valerio Bertone, Chiara Bissolotti and Marco Radici
Extraction of Pion Transverse Momentum Distributions from Drell-Yan data
null
null
10.1103/PhysRevD.107.014014
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
We map the distribution of unpolarized quarks inside a unpolarized pion as a function of the quark's transverse momentum, encoded in unpolarized Transverse Momentum Distributions (TMDs). We extract the pion TMDs from available data of unpolarized pion-nucleus Drell-Yan processes, where the cross section is differenti...
[ { "created": "Tue, 4 Oct 2022 16:50:16 GMT", "version": "v1" } ]
2023-01-25
[ [ "Cerutti", "Matteo", "" ], [ "Rossi", "Lorenzo", "" ], [ "Venturini", "Simone", "" ], [ "Bacchetta", "Alessandro", "" ], [ "Bertone", "Valerio", "" ], [ "Bissolotti", "Chiara", "" ], [ "Radici", "Marco", ""...
We map the distribution of unpolarized quarks inside a unpolarized pion as a function of the quark's transverse momentum, encoded in unpolarized Transverse Momentum Distributions (TMDs). We extract the pion TMDs from available data of unpolarized pion-nucleus Drell-Yan processes, where the cross section is differential...
hep-ph/0504194
Ulrich Haisch
Martin Gorbahn, Ulrich Haisch and Mikolaj Misiak
Three-Loop Mixing of Dipole Operators
4 pages, 1 figure; journal version, text below Eq. (7) corrected
Phys.Rev.Lett.95:102004,2005
10.1103/PhysRevLett.95.102004
IPPP/05/15; DCPT/05/30; FERMILAB-Pub-05-076-T; IFT-9/2005
hep-ph
null
We calculate the complete three-loop O(alpha_s^3) anomalous dimension matrix for the dimension-five dipole operators that arise in the Standard Model after integrating out the top quark and the heavy electroweak bosons. Our computation completes the three-loop anomalous dimension matrix of operators that govern low-e...
[ { "created": "Thu, 21 Apr 2005 15:46:18 GMT", "version": "v1" }, { "created": "Mon, 15 Aug 2005 14:02:27 GMT", "version": "v2" } ]
2008-11-26
[ [ "Gorbahn", "Martin", "" ], [ "Haisch", "Ulrich", "" ], [ "Misiak", "Mikolaj", "" ] ]
We calculate the complete three-loop O(alpha_s^3) anomalous dimension matrix for the dimension-five dipole operators that arise in the Standard Model after integrating out the top quark and the heavy electroweak bosons. Our computation completes the three-loop anomalous dimension matrix of operators that govern low-ene...
2001.10540
Thomas Hugle
Giorgio Arcadi, Giorgio Busoni, Thomas Hugle, Valentin Titus Tenorth
Comparing 2HDM $+$ Scalar and Pseudoscalar Simplified Models at LHC
26 pages, 14 figures
null
10.1007/JHEP06(2020)098
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this work we compare the current experimental LHC limits of the 2HDM $+$ scalar and pseudoscalar for the $t \bar{t}$, mono-$Z$ and mono-$h$ signatures and forecast the reach of future LHC upgrades for the mono-$Z$ channel. Furthermore, we comment on the possibility, in case of a signal detection, to discriminate b...
[ { "created": "Tue, 28 Jan 2020 19:00:00 GMT", "version": "v1" }, { "created": "Fri, 19 Feb 2021 17:51:57 GMT", "version": "v2" } ]
2021-02-22
[ [ "Arcadi", "Giorgio", "" ], [ "Busoni", "Giorgio", "" ], [ "Hugle", "Thomas", "" ], [ "Tenorth", "Valentin Titus", "" ] ]
In this work we compare the current experimental LHC limits of the 2HDM $+$ scalar and pseudoscalar for the $t \bar{t}$, mono-$Z$ and mono-$h$ signatures and forecast the reach of future LHC upgrades for the mono-$Z$ channel. Furthermore, we comment on the possibility, in case of a signal detection, to discriminate bet...
hep-ph/9512262
Jianwei Qiu
Xiaofeng Guo and Jianwei Qiu
Nuclear Dependence in Direct Photon Production
24 pages text in RevTex, 9 Postscript figures
Phys.Rev.D53:6144-6155,1996
10.1103/PhysRevD.53.6144
null
hep-ph nucl-th
null
We calculate the nuclear dependence of direct photon production in hadron-nucleus collisions. In terms of a multiple scattering picture, we factorize the cross section for direct photon production into calculable short-distance partonic parts times multiparton correlation functions in nuclei. We present the hadron-nu...
[ { "created": "Fri, 8 Dec 1995 23:02:52 GMT", "version": "v1" } ]
2014-11-17
[ [ "Guo", "Xiaofeng", "" ], [ "Qiu", "Jianwei", "" ] ]
We calculate the nuclear dependence of direct photon production in hadron-nucleus collisions. In terms of a multiple scattering picture, we factorize the cross section for direct photon production into calculable short-distance partonic parts times multiparton correlation functions in nuclei. We present the hadron-nucl...
1708.08464
Junwu Huang
Anson Hook and Junwu Huang
Probing axions with neutron star inspirals and other stellar processes
20 pages, 8 figures
null
10.1007/JHEP06(2018)036
null
hep-ph gr-qc
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In certain models of a QCD axion, finite density corrections to the axion potential can result in the axion being sourced by large dense objects. There are a variety of ways to test this phenomenon, but perhaps the most surprising effect is that the axion can mediate forces between neutron stars that can be as strong...
[ { "created": "Mon, 28 Aug 2017 18:00:08 GMT", "version": "v1" } ]
2018-07-04
[ [ "Hook", "Anson", "" ], [ "Huang", "Junwu", "" ] ]
In certain models of a QCD axion, finite density corrections to the axion potential can result in the axion being sourced by large dense objects. There are a variety of ways to test this phenomenon, but perhaps the most surprising effect is that the axion can mediate forces between neutron stars that can be as strong a...
hep-ph/0110408
Alexander Vereshagin
A.Vereshagin
Bootstrap equations for effective theories and the calculation of the $G_T/G_V$ ratio
4 pages, to be published in \pi N Newsletter 16 in The Proceedings of the MENU2001 Conference
PiN Newslett. 16 (2002) 426-428
null
null
hep-ph
null
A method is described for dealing with effective theories of hadron scattering. It allows one to reduce the number of independent renormalization prescriptions in those theories and gives a possibility to make numerical predictions. As an illustration, we show the results of comparison with the known data on $\pi\pi$...
[ { "created": "Wed, 31 Oct 2001 15:05:03 GMT", "version": "v1" } ]
2007-05-23
[ [ "Vereshagin", "A.", "" ] ]
A method is described for dealing with effective theories of hadron scattering. It allows one to reduce the number of independent renormalization prescriptions in those theories and gives a possibility to make numerical predictions. As an illustration, we show the results of comparison with the known data on $\pi\pi$, ...
hep-ph/0105216
Edi Halyo
Edi Halyo
Hybrid Quintessence with an End or Quintessence from Branes and Large Dimensions
16 pages in phyzzx.tex, many minor corrections and additions, one reference added, typos corrected
JHEP 0110:025,2001
10.1088/1126-6708/2001/10/025
null
hep-ph astro-ph hep-th
null
We describe a model of hybrid quintessence in which in addition to the tracker field there is a trigger field which is responsible for ending quintessence. As a result, hybrid quintessence does not suffer from the problems associated with the eternal acceleration of the universe. We derive the hybrid quintessence pot...
[ { "created": "Mon, 21 May 2001 19:50:02 GMT", "version": "v1" }, { "created": "Thu, 24 May 2001 19:19:18 GMT", "version": "v2" }, { "created": "Thu, 14 Jun 2001 18:27:02 GMT", "version": "v3" } ]
2010-02-03
[ [ "Halyo", "Edi", "" ] ]
We describe a model of hybrid quintessence in which in addition to the tracker field there is a trigger field which is responsible for ending quintessence. As a result, hybrid quintessence does not suffer from the problems associated with the eternal acceleration of the universe. We derive the hybrid quintessence poten...
hep-ph/0404288
Petros Dimopoulos
P. Dimopoulos and K. Farakos
Layered Higgs Phase as a Possible Field Localisation on a Brane
1+15 pages, 12 figures
Phys.Rev. D70 (2004) 045005
10.1103/PhysRevD.70.045005
null
hep-ph hep-lat hep-th
null
So far it has been found by using lattice techniques that in the anisotropic five--dimensional Abelian Higgs model, a layered Higgs phase exists in addition to the expected five--dimensional one. The exploration of the phase diagram has shown that the two Higgs phases are separated by a phase transition from the conf...
[ { "created": "Fri, 30 Apr 2004 14:45:25 GMT", "version": "v1" } ]
2009-11-10
[ [ "Dimopoulos", "P.", "" ], [ "Farakos", "K.", "" ] ]
So far it has been found by using lattice techniques that in the anisotropic five--dimensional Abelian Higgs model, a layered Higgs phase exists in addition to the expected five--dimensional one. The exploration of the phase diagram has shown that the two Higgs phases are separated by a phase transition from the confin...