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1806.02836
Mikael Chala
Shankha Banerjee, Mikael Chala and Michael Spannowsky
Top quark FCNCs in extended Higgs sectors
18 pages, 4 figures. V3: one typo corrected
Eur.Phys.J. C78 (2018) no.8, 683
10.1140/epjc/s10052-018-6150-0
null
hep-ph hep-ex
http://creativecommons.org/licenses/by-nc-sa/4.0/
The large number of top quarks produced at the LHC and possible future hadron colliders allows to study rare decays of this particle. In many well motivated models of new physics, for example in non-minimal composite-Higgs models, the existence of scalar singlets can induce new flavor-violating top decays surpassing ...
[ { "created": "Thu, 7 Jun 2018 18:00:01 GMT", "version": "v1" }, { "created": "Fri, 10 Aug 2018 15:53:06 GMT", "version": "v2" }, { "created": "Fri, 31 Aug 2018 14:12:02 GMT", "version": "v3" } ]
2018-09-03
[ [ "Banerjee", "Shankha", "" ], [ "Chala", "Mikael", "" ], [ "Spannowsky", "Michael", "" ] ]
The large number of top quarks produced at the LHC and possible future hadron colliders allows to study rare decays of this particle. In many well motivated models of new physics, for example in non-minimal composite-Higgs models, the existence of scalar singlets can induce new flavor-violating top decays surpassing th...
hep-ph/0308058
H. C. G. Caldas
Heron Caldas
Neutral Pion Decay Width in a Hot and Dense Medium
RevTeX, 11 pages, 11 figures, PRC version
Phys.Rev.C69:035204,2004
10.1103/PhysRevC.69.035204
null
hep-ph
null
We study the behavior of the $\pi^0$ width as a function of temperature and density. We provide simple expressions for the neutral pion width in a hot and dense medium based on a renormalized version of the microscopic Nambu Jona Lasinio model. Then we consider the two cases where the pion mass is finite or vanishes ...
[ { "created": "Wed, 6 Aug 2003 18:16:36 GMT", "version": "v1" }, { "created": "Fri, 12 Dec 2003 04:56:34 GMT", "version": "v2" }, { "created": "Fri, 12 Mar 2004 01:36:12 GMT", "version": "v3" } ]
2014-11-17
[ [ "Caldas", "Heron", "" ] ]
We study the behavior of the $\pi^0$ width as a function of temperature and density. We provide simple expressions for the neutral pion width in a hot and dense medium based on a renormalized version of the microscopic Nambu Jona Lasinio model. Then we consider the two cases where the pion mass is finite or vanishes at...
hep-ph/9801401
Dr P. K. Panigrahi
Prasanta. K. Panigrahi and C. Nagaraja (Kumar School of Physics, University of Hyderabad, Hyderabad (INDIA))
Soliton Solutions of the $\sigma$ Model and the Disoriented Chiral Condensates
4 pages, LaTex, invited talk presented at workshop SOLITONS: properties, dynamics, interactions and applications, held at Kingston, Ontario, Canada, July 20 - Jul 26, 1997
null
null
null
hep-ph
null
We derive travelling soliton solutions of the $\sigma$ model, relevant for the description of dynamics of pions, in the high-energy, heavy-ion collisions. These extended objects are analogs of Ne$\grave{e}$l and Bloch type defects in ferromagnetic systems and could possibly describe the disoriented chiral condensates...
[ { "created": "Fri, 23 Jan 1998 11:26:52 GMT", "version": "v1" } ]
2007-05-23
[ [ "Panigrahi", "Prasanta. K.", "", "Kumar School of Physics,\n University of Hyderabad, Hyderabad" ], [ "Nagaraja", "C.", "", "Kumar School of Physics,\n University of Hyderabad, Hyderabad" ] ]
We derive travelling soliton solutions of the $\sigma$ model, relevant for the description of dynamics of pions, in the high-energy, heavy-ion collisions. These extended objects are analogs of Ne$\grave{e}$l and Bloch type defects in ferromagnetic systems and could possibly describe the disoriented chiral condensates. ...
1207.0333
Andrzej Sandacz M
A. Sandacz and P. Sznajder
HEPGEN - generator for hard exclusive leptoproduction
null
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
HEPGEN is a generator of Monte Carlo events, which is dedicated to studies of hard exclusive single photon or meson production processes at the COMPASS experiment kinematic domain. In addition HEPGEN allows to generate also single photon or meson production accompanied by the diffractive dissociation of the nucleon, ...
[ { "created": "Mon, 2 Jul 2012 10:40:40 GMT", "version": "v1" } ]
2012-07-03
[ [ "Sandacz", "A.", "" ], [ "Sznajder", "P.", "" ] ]
HEPGEN is a generator of Monte Carlo events, which is dedicated to studies of hard exclusive single photon or meson production processes at the COMPASS experiment kinematic domain. In addition HEPGEN allows to generate also single photon or meson production accompanied by the diffractive dissociation of the nucleon, wh...
1204.4444
Christian Hambrock
Christian Hambrock and Gudrun Hiller
Extracting $B \to K^*$ Form Factors from Data
null
null
10.1103/PhysRevLett.109.091802
DO-TH 12/10
hep-ph hep-ex hep-lat
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We extract ratios of $B \to K^*$ form factors at low hadronic recoil from recent data on $B \to K^* \mu^+ \mu^-$ decays in a model-independent way. The presented method will improve in the future with further (angular) studies in semileptonic rare B-decays and advance our understanding of form factors, which are impo...
[ { "created": "Thu, 19 Apr 2012 19:41:50 GMT", "version": "v1" } ]
2013-05-30
[ [ "Hambrock", "Christian", "" ], [ "Hiller", "Gudrun", "" ] ]
We extract ratios of $B \to K^*$ form factors at low hadronic recoil from recent data on $B \to K^* \mu^+ \mu^-$ decays in a model-independent way. The presented method will improve in the future with further (angular) studies in semileptonic rare B-decays and advance our understanding of form factors, which are import...
2310.01023
Karim Ghorbani
Karim Ghorbani
Secluded Scalar Dark Matter and the Muon Anomalous Magnetic Moment
11 pages
null
null
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
We consider a dark matter model with a singlet scalar, $\chi$, as our dark matter (DM) candidate which is secluded from the Standard Model (SM) and annihilates to the singlet scalar, $\phi$, via a contact interaction. The singlet scalar, $\phi$, has a leptophilic interaction with the SM leptons and may decay leptonic...
[ { "created": "Mon, 2 Oct 2023 09:16:07 GMT", "version": "v1" } ]
2023-10-03
[ [ "Ghorbani", "Karim", "" ] ]
We consider a dark matter model with a singlet scalar, $\chi$, as our dark matter (DM) candidate which is secluded from the Standard Model (SM) and annihilates to the singlet scalar, $\phi$, via a contact interaction. The singlet scalar, $\phi$, has a leptophilic interaction with the SM leptons and may decay leptonical...
hep-ph/0310233
Johan Alwall
Johan Alwall and Gunnar Ingelman
Generalized VDM and F_2 data at low Q^2
5 pages, 4 figures, latex. Talk given at DIS2003 in St. Petersburg, to appear in the proceedings
null
null
null
hep-ph
null
The generalised vector meson dominance model (GVDM) gives a good description of F_2 data at very low Q^2. At intermediate Q^2 a GVDM component avoids problems when applying the large-Q^2 DIS formalism, such as a negative gluon distribution in the proton. The fluctuations of the exchanged photon into vector mesons is ...
[ { "created": "Mon, 20 Oct 2003 08:50:01 GMT", "version": "v1" } ]
2007-05-23
[ [ "Alwall", "Johan", "" ], [ "Ingelman", "Gunnar", "" ] ]
The generalised vector meson dominance model (GVDM) gives a good description of F_2 data at very low Q^2. At intermediate Q^2 a GVDM component avoids problems when applying the large-Q^2 DIS formalism, such as a negative gluon distribution in the proton. The fluctuations of the exchanged photon into vector mesons is al...
1312.3022
Yukio Nemoto
Masakiyo Kitazawa, Teiji Kunihiro, Yukio Nemoto
Possible generation of anomalously soft quark excitations at nonzero temperature: Nonhyperbolic dispersion of parapion and van Hove singularity
10 pages, 7 figures, to appear in Phys. Rev. D. Comments on the parameter dependence, the Matsubara summation, future prospects added. References added. Typos corrected
null
10.1103/PhysRevD.89.056002
null
hep-ph cond-mat.str-el nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the quark spectrum at finite temperature near and above the pseudocritical temperature of the chiral phase transition incorporating the effects of the collective modes with the quantum number of the sigma (parasigma) and pion (parapion) in a chiral effective model with a nonzero current quark mass. Below the...
[ { "created": "Wed, 11 Dec 2013 02:39:46 GMT", "version": "v1" }, { "created": "Sun, 16 Feb 2014 23:10:48 GMT", "version": "v2" } ]
2015-06-18
[ [ "Kitazawa", "Masakiyo", "" ], [ "Kunihiro", "Teiji", "" ], [ "Nemoto", "Yukio", "" ] ]
We study the quark spectrum at finite temperature near and above the pseudocritical temperature of the chiral phase transition incorporating the effects of the collective modes with the quantum number of the sigma (parasigma) and pion (parapion) in a chiral effective model with a nonzero current quark mass. Below the p...
2205.14379
Andreas Papaefstathiou
Andreas Papaefstathiou, Tania Robens, and Graham White
Signal strength and W-boson mass measurements as a probe of the electro-weak phase transition at colliders -- Snowmass White Paper
8 pages, 1 figure; contribution to Snowmass 2021. Minor correction to v1
null
null
RBI-ThPhys-2022-20
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider an extension of the scalar sector of the Standard Model (SM) by an additional gauge singlet, which mixes with a part of the SM-like Higgs doublet. Within this model, parameter-space regions exist that can lead to a strong first-order electro-weak phase transition, a necessary condition for electro-weak ba...
[ { "created": "Sat, 28 May 2022 09:36:36 GMT", "version": "v1" }, { "created": "Fri, 30 Sep 2022 14:25:41 GMT", "version": "v2" } ]
2022-10-03
[ [ "Papaefstathiou", "Andreas", "" ], [ "Robens", "Tania", "" ], [ "White", "Graham", "" ] ]
We consider an extension of the scalar sector of the Standard Model (SM) by an additional gauge singlet, which mixes with a part of the SM-like Higgs doublet. Within this model, parameter-space regions exist that can lead to a strong first-order electro-weak phase transition, a necessary condition for electro-weak bary...
1007.2470
Yumi Ko
Kyung Kiu Kim, Youngman Kim and Yumi Ko
Self-bound dense objects in holographic QCD
17 pages, 5 figures, figures replaced, minor revision, to appear in JHEP
JHEP 1010:039,2010
10.1007/JHEP10(2010)039
null
hep-ph hep-th nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study a self-bound dense object in the hard wall model. We consider a spherically symmetric dense object which is characterized by its radial density distribution and non-uniform but spherically symmetric chiral condensate. For this we analytically solve the partial differential equations in the hard wall model an...
[ { "created": "Thu, 15 Jul 2010 04:12:16 GMT", "version": "v1" }, { "created": "Tue, 12 Oct 2010 07:20:50 GMT", "version": "v2" } ]
2014-11-21
[ [ "Kim", "Kyung Kiu", "" ], [ "Kim", "Youngman", "" ], [ "Ko", "Yumi", "" ] ]
We study a self-bound dense object in the hard wall model. We consider a spherically symmetric dense object which is characterized by its radial density distribution and non-uniform but spherically symmetric chiral condensate. For this we analytically solve the partial differential equations in the hard wall model and ...
1101.3796
Fabrizio Nesti
Homero Mart\'inez, Alejandra Melfo, Fabrizio Nesti, Goran Senjanovi\'c
Three Extra Mirror or Sequential Families: a Case for Heavy Higgs and Inert Doublet
Four pages. Some figures and numerical results corrected. References updated
Phys.Rev.Lett.106:191802,2011
10.1103/PhysRevLett.106.191802
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the possibility of the existence of extra fermion families and an extra Higgs doublet. We find that requiring the extra Higgs doublet to be inert leaves space for three extra families, allowing for mirror fermion families and a dark matter candidate at the same time. The emerging scenario is very predictive:...
[ { "created": "Wed, 19 Jan 2011 23:08:34 GMT", "version": "v1" }, { "created": "Sun, 24 Apr 2011 18:29:02 GMT", "version": "v2" } ]
2011-05-23
[ [ "Martínez", "Homero", "" ], [ "Melfo", "Alejandra", "" ], [ "Nesti", "Fabrizio", "" ], [ "Senjanović", "Goran", "" ] ]
We study the possibility of the existence of extra fermion families and an extra Higgs doublet. We find that requiring the extra Higgs doublet to be inert leaves space for three extra families, allowing for mirror fermion families and a dark matter candidate at the same time. The emerging scenario is very predictive: i...
hep-ph/0107256
Yuri V. Kovchegov
Yuri V. Kovchegov (University of Washington)
Diffractive Gluon Production in Proton-Nucleus Collisions and in DIS
14 pages, 6 figures, REVTeX, minor corrections included
Phys.Rev.D64:114016,2001; Erratum-ibid.D68:039901,2003
10.1103/PhysRevD.64.114016 10.1103/PhysRevD.68.039901
NT@UW-01-018
hep-ph nucl-th
null
We derive expressions for the gluon production cross sections in the single diffractive proton-nucleus scattering and DIS processes in a quasi-classical approximation. The resulting cross sections include the effects of all multiple rescatterings in the classical background field of the target proton or nucleus, whic...
[ { "created": "Wed, 25 Jul 2001 00:13:41 GMT", "version": "v1" }, { "created": "Wed, 2 Jul 2003 19:36:40 GMT", "version": "v2" } ]
2014-11-17
[ [ "Kovchegov", "Yuri V.", "", "University of Washington" ] ]
We derive expressions for the gluon production cross sections in the single diffractive proton-nucleus scattering and DIS processes in a quasi-classical approximation. The resulting cross sections include the effects of all multiple rescatterings in the classical background field of the target proton or nucleus, which ...
hep-ph/0406155
Chong Sheng Li
Jian Jun Liu, Chong Sheng Li, Li Lin Yang and Li Gang Jin
$t\to cV$ via SUSY FCNC couplings in the unconstrained MSSM
15 pages, 3 figures, minor changs in the Table 1
Phys.Lett.B599:92-101,2004
10.1016/j.physletb.2004.07.062
null
hep-ph
null
We recalculate the branching ratios for $t\to cV$ ($V=g,\gamma,Z$) induced by SUSY FCNC couplings within the general unconstrained MSSM framework using mass eigenstate approach. Our results show that the branching ratios for these decays are larger than ones reported in previous literatures in the MSSM with R-parity ...
[ { "created": "Tue, 15 Jun 2004 08:33:43 GMT", "version": "v1" }, { "created": "Tue, 31 Aug 2004 01:04:41 GMT", "version": "v2" }, { "created": "Thu, 14 Oct 2004 08:23:08 GMT", "version": "v3" } ]
2008-11-26
[ [ "Liu", "Jian Jun", "" ], [ "Li", "Chong Sheng", "" ], [ "Yang", "Li Lin", "" ], [ "Jin", "Li Gang", "" ] ]
We recalculate the branching ratios for $t\to cV$ ($V=g,\gamma,Z$) induced by SUSY FCNC couplings within the general unconstrained MSSM framework using mass eigenstate approach. Our results show that the branching ratios for these decays are larger than ones reported in previous literatures in the MSSM with R-parity co...
1302.7240
Pietro Biancofiore
Pietro Biancofiore
Bounds on the compactification scale of two universal extra dimensions from exclusive $b \to s \gamma$ decays
10 pages, 2 figures
null
10.1088/0954-3899/40/6/065006
BARI-TH/652-13
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The exclusive radiative $B \to K^* \gamma$, $B \to K^*_2 \gamma$, $B_s \to \phi \gamma$ and $\Lambda_b \to \Lambda \gamma$ decays are studied in a new physics scenario with two universal extra dimensions compactified on a chiral square. The computed branching fractions depend on the size $R$ of the extra dimensions, ...
[ { "created": "Thu, 28 Feb 2013 16:01:59 GMT", "version": "v1" } ]
2015-06-15
[ [ "Biancofiore", "Pietro", "" ] ]
The exclusive radiative $B \to K^* \gamma$, $B \to K^*_2 \gamma$, $B_s \to \phi \gamma$ and $\Lambda_b \to \Lambda \gamma$ decays are studied in a new physics scenario with two universal extra dimensions compactified on a chiral square. The computed branching fractions depend on the size $R$ of the extra dimensions, an...
hep-ph/0509171
Sujoy Poddar
Siba Prasad Das, Amitava Datta and Sujoy Poddar
Top squark and neutralino decays in a R-parity violating model constrained by neutrino oscillation data
20 pages, 4 figures, LaTex,typos corrected and reference added for section 2, a paragraph has been added in the conclusion part
Phys.Rev. D73 (2006) 075014
10.1103/PhysRevD.73.075014
null
hep-ph
null
In a R-parity violating (RPV) model of neutrino mass with three bilinear couplings $\mu_i$ and three trilinear couplings $\lambda'_{i33}$, where $i$ is the lepton index, we find six generic scenarios each with a distinctive pattern of the trilinear couplings consistent with the oscillation data. These patterns may be...
[ { "created": "Fri, 16 Sep 2005 14:15:31 GMT", "version": "v1" }, { "created": "Mon, 26 Sep 2005 14:35:48 GMT", "version": "v2" }, { "created": "Fri, 17 Mar 2006 08:07:22 GMT", "version": "v3" } ]
2016-09-06
[ [ "Das", "Siba Prasad", "" ], [ "Datta", "Amitava", "" ], [ "Poddar", "Sujoy", "" ] ]
In a R-parity violating (RPV) model of neutrino mass with three bilinear couplings $\mu_i$ and three trilinear couplings $\lambda'_{i33}$, where $i$ is the lepton index, we find six generic scenarios each with a distinctive pattern of the trilinear couplings consistent with the oscillation data. These patterns may be r...
hep-ph/9204233
S. Umasankar
D. Bhowmick, A. K. Ray, S. Raychaudhuri and S. Uma Sankar
CP-violating Phenomena in an $ SU(2)_L \times SU(2)_R \times U(1)_{B-L} \times SU(3)_H^{VL}$ Horizontal Symmetric Model
19 pages, 2 figures, one included, other will be mailed on request LaTeX file
null
null
null
hep-ph
null
We consider an $SU(2)_L \times SU(2)_R \times U(1)_{B-L} \times SU(3)_H^{VL}$ gauge model with natural flavour conservation in the Higgs sector, in which CP-violation occurs due to the horizontal interactions only. We calculate the CP-violating observables $\epsilon$ and $\epsilon'$ of the neutral kaon sector and $d_...
[ { "created": "Thu, 23 Apr 1992 23:15:32 GMT", "version": "v1" } ]
2007-05-23
[ [ "Bhowmick", "D.", "" ], [ "Ray", "A. K.", "" ], [ "Raychaudhuri", "S.", "" ], [ "Sankar", "S. Uma", "" ] ]
We consider an $SU(2)_L \times SU(2)_R \times U(1)_{B-L} \times SU(3)_H^{VL}$ gauge model with natural flavour conservation in the Higgs sector, in which CP-violation occurs due to the horizontal interactions only. We calculate the CP-violating observables $\epsilon$ and $\epsilon'$ of the neutral kaon sector and $d_n$...
2112.01449
Markus Wobisch
L. Sawyer, C. Waits, M. Wobisch
Perturbative QCD predictions in fixed order for cross section ratios
12 pages, 4 figures, submitted to JHEP
null
null
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In the standard approach, predictions of perturbative Quantum Chromodynamics for ratios of cross sections are computed as the ratio of fixed-order predictions for the numerator and the denominator. Beyond the lowest order in the perturbative expansion, the result does, however, not correspond to a fixed-order predict...
[ { "created": "Thu, 2 Dec 2021 17:43:58 GMT", "version": "v1" } ]
2021-12-03
[ [ "Sawyer", "L.", "" ], [ "Waits", "C.", "" ], [ "Wobisch", "M.", "" ] ]
In the standard approach, predictions of perturbative Quantum Chromodynamics for ratios of cross sections are computed as the ratio of fixed-order predictions for the numerator and the denominator. Beyond the lowest order in the perturbative expansion, the result does, however, not correspond to a fixed-order predictio...
2205.05744
Pasquale Di Bari
Pasquale Di Bari
Gravitational waves from neutrino mass genesis
19 pages, 5 figures; Proceedings of the Corfu Summer Institute 2021
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The discovery of gravitational waves opens new opportunities to test BSM physics. In particular, the production of a stochastic background of primordial gravitational waves could provide a signature of the generation of the right-right Majorana neutrino mass term necessary, within type-I seesaw mechanism, to explain ...
[ { "created": "Wed, 11 May 2022 19:23:51 GMT", "version": "v1" } ]
2022-05-13
[ [ "Di Bari", "Pasquale", "" ] ]
The discovery of gravitational waves opens new opportunities to test BSM physics. In particular, the production of a stochastic background of primordial gravitational waves could provide a signature of the generation of the right-right Majorana neutrino mass term necessary, within type-I seesaw mechanism, to explain li...
1205.5035
Sebastian Sapeta
Krzysztof Kutak and Sebastian Sapeta
Gluon saturation in dijet production in p-Pb collisions at Large Hadron Collider
16 pages, 8 figures; v2: minor textual changes, reference added; v3: extra paragraph and figure for RHIC, several clarifying sentences and references added, version accepted by PRD
Phys. Rev. D 86, 094043 (2012)
10.1103/PhysRevD.86.094043
IPPP/12/35; DCPT/12/70; IFJPAN-IV-2012-1
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study saturation effects in the production of dijets in p-p and p-Pb collisions using the framework of high energy factorization. We focus on central-forward jet configurations, which allow for probing gluon density at low longitudinal momentum fraction. We find significant suppression of the central-forward jet d...
[ { "created": "Tue, 22 May 2012 20:00:17 GMT", "version": "v1" }, { "created": "Fri, 25 May 2012 17:01:02 GMT", "version": "v2" }, { "created": "Mon, 5 Nov 2012 17:24:59 GMT", "version": "v3" } ]
2013-05-30
[ [ "Kutak", "Krzysztof", "" ], [ "Sapeta", "Sebastian", "" ] ]
We study saturation effects in the production of dijets in p-p and p-Pb collisions using the framework of high energy factorization. We focus on central-forward jet configurations, which allow for probing gluon density at low longitudinal momentum fraction. We find significant suppression of the central-forward jet dec...
1109.2236
Bruno Os\'orio Rodrigues
A. Cerqueira Jr, B. Os\'orio Rodrigues and M. E. Bracco
$B_s^* B K$ vertex from QCD sum rules
11 pages, 11 figures
null
10.1016/j.nuclphysa.2011.11.004
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The form factors and the coupling constant of the $B_s^* B K$ vertex are calculated using the QCD sum rules method. Three point correlation functions are computed considering both $K$ and $B$ mesons off-shell and, after an extrapolation of the QCDSR results, we obtain the coupling constant of the vertex. We study the...
[ { "created": "Sat, 10 Sep 2011 16:56:11 GMT", "version": "v1" } ]
2014-12-02
[ [ "Cerqueira", "A.", "Jr" ], [ "Rodrigues", "B. Osório", "" ], [ "Bracco", "M. E.", "" ] ]
The form factors and the coupling constant of the $B_s^* B K$ vertex are calculated using the QCD sum rules method. Three point correlation functions are computed considering both $K$ and $B$ mesons off-shell and, after an extrapolation of the QCDSR results, we obtain the coupling constant of the vertex. We study the u...
hep-ph/9709222
Hans-Guenter Dosch
H.G. Dosch (Institut f\"ur Theoretische Physik der Universit\"at Heidelberg)
Few-body aspects of non-perturbative QCD
Plenary Talk at 15th Int. Conf. on Few-Body Problems in Physics 16 pages
Nucl.Phys.A631:316c-330c,1998
10.1016/S0375-9474(98)00030-X
null
hep-ph
null
After some general remarks on non-perturbative QCD I present shortly models which lead to a color-electric flux tube formation. The implications of such a flux tube formation especially on high energy scattering are discussed.
[ { "created": "Tue, 2 Sep 1997 16:04:37 GMT", "version": "v1" } ]
2008-11-26
[ [ "Dosch", "H. G.", "", "Institut für Theoretische Physik der Universität\n Heidelberg" ] ]
After some general remarks on non-perturbative QCD I present shortly models which lead to a color-electric flux tube formation. The implications of such a flux tube formation especially on high energy scattering are discussed.
hep-ph/9504380
Boris Kopeliovich
Boris Kopeliovich and Bogdan Povh (MPI-K, Heidelberg)
Nuclear Shadowing and the Proton Structure Function at Small x
9 pages, LATEX, 3 uuencoded figures
null
null
MPIH-V12-1995
hep-ph
null
A new scaling variable is introduced in terms of which nuclear shadowing in deep-inelastic scattering is universal, i.e. independent of $A$, $Q^2$ and $x$. This variable can be interpreted as a measure of the number of gluons probed by the hadronic fluctuations of a virtual photon during their lifetime. According to ...
[ { "created": "Mon, 24 Apr 1995 17:49:37 GMT", "version": "v1" } ]
2007-05-23
[ [ "Kopeliovich", "Boris", "", "MPI-K, Heidelberg" ], [ "Povh", "Bogdan", "", "MPI-K, Heidelberg" ] ]
A new scaling variable is introduced in terms of which nuclear shadowing in deep-inelastic scattering is universal, i.e. independent of $A$, $Q^2$ and $x$. This variable can be interpreted as a measure of the number of gluons probed by the hadronic fluctuations of a virtual photon during their lifetime. According to re...
2112.07330
Zbigniew Was
Sw. Banerjee, D. Biswas, T. Przedzinski, Z. Was
The tau lepton Monte Carlo Event Generation -- imprinting New Physics models with exotic scalar or vector states into simulation samples
Presented by Z. Was on "STRONG 2020 Virtual Workshop on Spacelike and Timelike determination of the Hadronic LO contribution to the Muon g-2 November, 2021, Frascati (virtual edition), Italy
null
null
IFJPAN-IV-2021-20
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The Monte Carlo for lepton pair production andtau decays consist of KKMC for lepton pair production, tauola for tau lepton decays and photos for radiative corrections in decays. An effort for adaptation of the system for precision data being collected at the Belle II experiment included simulation of additional lig...
[ { "created": "Tue, 14 Dec 2021 12:34:58 GMT", "version": "v1" } ]
2021-12-15
[ [ "Banerjee", "Sw.", "" ], [ "Biswas", "D.", "" ], [ "Przedzinski", "T.", "" ], [ "Was", "Z.", "" ] ]
The Monte Carlo for lepton pair production andtau decays consist of KKMC for lepton pair production, tauola for tau lepton decays and photos for radiative corrections in decays. An effort for adaptation of the system for precision data being collected at the Belle II experiment included simulation of additional light l...
2311.00350
Hao Chen
Hao Chen
QCD Factorization from Light-ray OPE
13 pages
null
null
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The energy-energy correlator (EEC) in Quantum Chromodynamics (QCD) serves as an important event shape for probing the substructure of jets in high-energy collisions. A significant progress has been make in understanding the collinear limit, where the angle between two detectors approaches zero, from the factorization...
[ { "created": "Wed, 1 Nov 2023 07:51:43 GMT", "version": "v1" } ]
2023-11-02
[ [ "Chen", "Hao", "" ] ]
The energy-energy correlator (EEC) in Quantum Chromodynamics (QCD) serves as an important event shape for probing the substructure of jets in high-energy collisions. A significant progress has been make in understanding the collinear limit, where the angle between two detectors approaches zero, from the factorization f...
hep-ph/0006137
Jai Sam Kim
Jai Sam Kim and Kyungsoo Lee
The Earth Regeneration Effect of Solar Neutrinos: a Numerical Treatment with Three Active Neutrino Flavors
8 pages, 2 postscript figures
Comput.Phys.Commun.135:176-189,2001
10.1016/S0010-4655(00)00237-X
null
hep-ph
null
We introduce an integrated algorithm for full scale investigation of the earth regeneration effect of solar neutrinos with all three active neutrinos. We illustrate that the earth effect on low energy solar neutrinos ($E_\nu < 20$ MeV) causes large variations in the survival probabilities for large values of the mixi...
[ { "created": "Tue, 13 Jun 2000 14:31:41 GMT", "version": "v1" } ]
2014-11-17
[ [ "Kim", "Jai Sam", "" ], [ "Lee", "Kyungsoo", "" ] ]
We introduce an integrated algorithm for full scale investigation of the earth regeneration effect of solar neutrinos with all three active neutrinos. We illustrate that the earth effect on low energy solar neutrinos ($E_\nu < 20$ MeV) causes large variations in the survival probabilities for large values of the mixing...
hep-ph/0001094
Ma Bo-Qiang
Bo-Qiang Ma
The Spin Structure of the Proton
8 latex pages, Invited talk presented at Circum-Pan-Pacific RIKEN Symposium on High Energy Spin Physics, RIKEN, Wako, Japan, November 3-6, 1999. To be published in the proceedings
RIKEN Rev.28:110-113,2000
null
null
hep-ph hep-ex nucl-ex nucl-th
null
It is shown that the proton "spin crisis'' or "spin puzzle" can be understood by the relativistic effect of quark transversal motions due to the Melosh-Wigner rotation. The quark helicity $\Delta q$ measured in polarized deep inelastic scattering is actually the quark spin in the infinite momentum frame or in the lig...
[ { "created": "Wed, 12 Jan 2000 09:20:00 GMT", "version": "v1" } ]
2011-04-15
[ [ "Ma", "Bo-Qiang", "" ] ]
It is shown that the proton "spin crisis'' or "spin puzzle" can be understood by the relativistic effect of quark transversal motions due to the Melosh-Wigner rotation. The quark helicity $\Delta q$ measured in polarized deep inelastic scattering is actually the quark spin in the infinite momentum frame or in the light...
hep-ph/0502046
Yogesh Mathur Kumar
R. Ramanathan, Y. K. Mathur, K. K. Gupta, Agam K. Jha and S. S. Singh (University of Delhi, India)
A Comparative Study of Two Models of QGP-Fireball Formation
Revtex 5 pages and 5 figures, Added some results and references
null
null
null
hep-ph
null
A Comparative study of the strengths and weakness of the models of fireball formation namely the statistical model of Ramanathan et.al (Physical Review C 70, 027903, 2004) and the approximation schemes of Kapusta et. al (Physical Review D 46, 1379, 1992) and its subsequent improved variants is made. The way to comple...
[ { "created": "Fri, 4 Feb 2005 16:12:21 GMT", "version": "v1" }, { "created": "Fri, 25 Feb 2005 14:49:49 GMT", "version": "v2" }, { "created": "Sat, 5 Mar 2005 10:49:54 GMT", "version": "v3" } ]
2007-05-23
[ [ "Ramanathan", "R.", "", "University of Delhi, India" ], [ "Mathur", "Y. K.", "", "University of Delhi, India" ], [ "Gupta", "K. K.", "", "University of Delhi, India" ], [ "Jha", "Agam K.", "", "University of Delhi, India" ], [ "Si...
A Comparative study of the strengths and weakness of the models of fireball formation namely the statistical model of Ramanathan et.al (Physical Review C 70, 027903, 2004) and the approximation schemes of Kapusta et. al (Physical Review D 46, 1379, 1992) and its subsequent improved variants is made. The way to compleme...
hep-ph/9906275
Carlo Giunti
C. Giunti
Neutrinoless double-beta decay with three or four neutrino mixing
18 pages including 2 figures, RevTeX
Phys.Rev. D61 (2000) 036002
10.1103/PhysRevD.61.036002
DFTT 32/99
hep-ph hep-ex nucl-ex
null
Considering the scheme with mixing of three neutrinos and a mass hierarchy that can accommodate the results of solar and atmospheric neutrino experiments, it is shown that the results of solar neutrino experiments imply a lower bound for the effective Majorana mass in neutrinoless double-beta decay, under the natural...
[ { "created": "Mon, 7 Jun 1999 13:28:10 GMT", "version": "v1" }, { "created": "Fri, 27 Aug 1999 12:45:05 GMT", "version": "v2" } ]
2009-10-31
[ [ "Giunti", "C.", "" ] ]
Considering the scheme with mixing of three neutrinos and a mass hierarchy that can accommodate the results of solar and atmospheric neutrino experiments, it is shown that the results of solar neutrino experiments imply a lower bound for the effective Majorana mass in neutrinoless double-beta decay, under the natural a...
hep-ph/0605128
Zaven Akopoff N
N. Akopov, L. Grigoryan, Z. Akopov
Nuclear Attenuation of high energy two-hadron system in the string model
8 pages
Eur.Phys.J.C49:1015-1021,2007
10.1140/epjc/s10052-006-0183-5
null
hep-ph
null
Nuclear attenuation of the two-hadron system is considered in the string model. The two-scale model and its improved version with two different choices of constituent formation time and sets of parameters obtained earlier for the single hadron attenuation, are used to describe available experimental data for the $z$-...
[ { "created": "Thu, 11 May 2006 12:01:45 GMT", "version": "v1" } ]
2008-11-26
[ [ "Akopov", "N.", "" ], [ "Grigoryan", "L.", "" ], [ "Akopov", "Z.", "" ] ]
Nuclear attenuation of the two-hadron system is considered in the string model. The two-scale model and its improved version with two different choices of constituent formation time and sets of parameters obtained earlier for the single hadron attenuation, are used to describe available experimental data for the $z$-de...
2307.02888
Wen-Chen Chang
Wen-Chen Chang, Chia-Yu Hsieh, Yu-Shiang Lian, Jen-Chieh Peng, Stephane Platchkov and Takahiro Sawada
Pion PDFs confronted by Fixed-Target Charmonium Production
17 pages, 6 figures; invited review. arXiv admin note: text overlap with arXiv:2006.06947, arXiv:2209.04072
AAPPS Bulletin volume 33, Article number: 15 (2023)
10.1007/s43673-023-00085-4
null
hep-ph hep-ex nucl-ex
http://creativecommons.org/licenses/by/4.0/
The pion, as the Goldstone boson of the strong interaction, is the lightest QCD bound state and responsible for the long-range nucleon-nucleon interaction inside the nucleus. Our knowledge on the pion partonic structure is limited by the existing Drell-Yan data which are primarily sensitive to the pion valence-quark ...
[ { "created": "Thu, 6 Jul 2023 09:45:06 GMT", "version": "v1" } ]
2023-07-07
[ [ "Chang", "Wen-Chen", "" ], [ "Hsieh", "Chia-Yu", "" ], [ "Lian", "Yu-Shiang", "" ], [ "Peng", "Jen-Chieh", "" ], [ "Platchkov", "Stephane", "" ], [ "Sawada", "Takahiro", "" ] ]
The pion, as the Goldstone boson of the strong interaction, is the lightest QCD bound state and responsible for the long-range nucleon-nucleon interaction inside the nucleus. Our knowledge on the pion partonic structure is limited by the existing Drell-Yan data which are primarily sensitive to the pion valence-quark di...
2108.03248
David Morrissey
Andrea Gaspert, Pietro Giampa, and David E. Morrissey
Neutrino Backgrounds in Future Liquid Noble Element Dark Matter Direct Detection Experiments
44 pages, 11 figures, added references and discussion and updated figures for clarity, matches published version
null
10.1103/PhysRevD.105.035020
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
Experiments that use liquid noble gasses as target materials, such as argon and xenon, play a significant role in direct detection searches for WIMP(-like) dark matter. As these experiments grow in size, they will soon encounter a new background to their dark matter discovery potential from neutrino scattering off nu...
[ { "created": "Fri, 6 Aug 2021 18:00:03 GMT", "version": "v1" }, { "created": "Wed, 3 May 2023 18:11:37 GMT", "version": "v2" } ]
2023-05-05
[ [ "Gaspert", "Andrea", "" ], [ "Giampa", "Pietro", "" ], [ "Morrissey", "David E.", "" ] ]
Experiments that use liquid noble gasses as target materials, such as argon and xenon, play a significant role in direct detection searches for WIMP(-like) dark matter. As these experiments grow in size, they will soon encounter a new background to their dark matter discovery potential from neutrino scattering off nucl...
1203.1918
James Maxin
Tianjun Li, James A. Maxin, Dimitri V. Nanopoulos, and Joel W. Walker
A Multi-Axis Best Fit to the Collider Supersymmetry Search: The Aroma of Stops and Gluinos at the \sqrt{s} = 7 TeV LHC
13 pages, 2 figures, 3 tables
null
null
ACT-04-12, MIFPA-12-09
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In Profumo di SUSY, we presented evidence that CMS&ATLAS may have already registered a handful of deftly camouflaged supersymmetry events at the LHC in the multijet channels. Here, we explore the prospect for corroboration of this suggestion from 5 additional CMS&ATLAS search strategies targeting the production of li...
[ { "created": "Thu, 8 Mar 2012 20:57:38 GMT", "version": "v1" } ]
2012-03-09
[ [ "Li", "Tianjun", "" ], [ "Maxin", "James A.", "" ], [ "Nanopoulos", "Dimitri V.", "" ], [ "Walker", "Joel W.", "" ] ]
In Profumo di SUSY, we presented evidence that CMS&ATLAS may have already registered a handful of deftly camouflaged supersymmetry events at the LHC in the multijet channels. Here, we explore the prospect for corroboration of this suggestion from 5 additional CMS&ATLAS search strategies targeting the production of ligh...
0706.3672
Kirill Semenov-Tian-Shansky
Kirill M.Semenov-Tian-Shansky, Alexander V.Vereshagin, Vladimir V. Vereshagin
Bootstrap and the physical values of $\pi N$ resonance parameters
41 pages, 7 figures
Phys.Rev.D77:025028,2008
10.1103/PhysRevD.77.025028
null
hep-ph hep-th
null
This is the 6th paper in the series developing the formalism to manage the effective scattering theory of strong interactions. Relying on the theoretical scheme suggested in our previous publications we concentrate here on the practical aspect and apply our technique to the elastic pion-nucleon scattering amplitude. ...
[ { "created": "Mon, 25 Jun 2007 17:13:39 GMT", "version": "v1" } ]
2008-11-26
[ [ "Semenov-Tian-Shansky", "Kirill M.", "" ], [ "Vereshagin", "Alexander V.", "" ], [ "Vereshagin", "Vladimir V.", "" ] ]
This is the 6th paper in the series developing the formalism to manage the effective scattering theory of strong interactions. Relying on the theoretical scheme suggested in our previous publications we concentrate here on the practical aspect and apply our technique to the elastic pion-nucleon scattering amplitude. We...
2408.03068
Yanbing Cai
Jingxuan Chen, Xiaopeng Wang, Yanbing Cai, Xurong Chen, Qian Wang
Valence Quark Distributions in Pions: Insights from Tsallis Entropy
11 pages, 3 figures
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the valence quark distributions of pions at a low initial scale ($Q^2_0$) through the application of Tsallis entropy, a non-extensive measure adept at encapsulating long-range correlations among internal constituents. Utilizing the maximum entropy approach, we derive the valence quark distributions at ...
[ { "created": "Tue, 6 Aug 2024 09:49:11 GMT", "version": "v1" } ]
2024-08-07
[ [ "Chen", "Jingxuan", "" ], [ "Wang", "Xiaopeng", "" ], [ "Cai", "Yanbing", "" ], [ "Chen", "Xurong", "" ], [ "Wang", "Qian", "" ] ]
We investigate the valence quark distributions of pions at a low initial scale ($Q^2_0$) through the application of Tsallis entropy, a non-extensive measure adept at encapsulating long-range correlations among internal constituents. Utilizing the maximum entropy approach, we derive the valence quark distributions at el...
hep-ph/0607033
Vittorio del Duca
V. Del Duca, G. Somogyi, Z. Trocsanyi
Cross sections at NNLO
4 pages. To appear in the proceedings of DIS06, Tsukuba, Japan
null
10.1142/9789812706706_0130
null
hep-ph
null
In this talk we report on the state of the art on the calculation of cross section at next-to-next-to-leading (NNLO) accuracy.
[ { "created": "Tue, 4 Jul 2006 09:56:19 GMT", "version": "v1" } ]
2017-08-23
[ [ "Del Duca", "V.", "" ], [ "Somogyi", "G.", "" ], [ "Trocsanyi", "Z.", "" ] ]
In this talk we report on the state of the art on the calculation of cross section at next-to-next-to-leading (NNLO) accuracy.
2110.15840
Giacomo Magni
Raquel Gomez-Ambrosio and Giacomo Magni
SMEFT analysis of the electroweak sector: challenges beyond dimension 6
null
null
null
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
In these proceedings we present the latest developments in our effort to include vector boson scattering (VBS) measurements into global SMEFT fits of LHC data. We present some updates to our initial study of arXiv:2101.03180 as well as comment on a possible road map for the inclusion of higher orders beyond dimension...
[ { "created": "Fri, 29 Oct 2021 15:04:32 GMT", "version": "v1" } ]
2021-11-01
[ [ "Gomez-Ambrosio", "Raquel", "" ], [ "Magni", "Giacomo", "" ] ]
In these proceedings we present the latest developments in our effort to include vector boson scattering (VBS) measurements into global SMEFT fits of LHC data. We present some updates to our initial study of arXiv:2101.03180 as well as comment on a possible road map for the inclusion of higher orders beyond dimension 6...
hep-ph/9907489
Bernd Kniehl
B.A. Kniehl and A.A. Penin
Ultrasoft Effects in Heavy-Quarkonium Physics
14 pages (Latex), 5 figures (Axodraw), one reference added, accepted for publication in Nuclear Physics B
Nucl.Phys. B563 (1999) 200-210
10.1016/S0550-3213(99)00564-7
DESY 99-099, MPI/PhT/99-029
hep-ph
null
In the framework of nonrelativistic QCD, we consider a new class of radiative corrections, which are generated at next-to-next-to-next-to-leading order through the chromoelectric dipole interaction of heavy quarkonium with ultrasoft virtual gluons. We provide analytical formulae from which the resulting shifts in the...
[ { "created": "Mon, 26 Jul 1999 13:55:08 GMT", "version": "v1" }, { "created": "Tue, 21 Sep 1999 17:38:41 GMT", "version": "v2" } ]
2009-10-31
[ [ "Kniehl", "B. A.", "" ], [ "Penin", "A. A.", "" ] ]
In the framework of nonrelativistic QCD, we consider a new class of radiative corrections, which are generated at next-to-next-to-next-to-leading order through the chromoelectric dipole interaction of heavy quarkonium with ultrasoft virtual gluons. We provide analytical formulae from which the resulting shifts in the q...
1811.02581
Simone Biondini
S. Biondini and S. Vogl
Coloured coannihilations: Dark matter phenomenology meets non-relativistic EFTs
Published version, references and section on indirect detection added
null
10.1007/JHEP02(2019)016
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the phenomenology of a simplified model with a Majorana fermion as dark matter candidate which interacts with Standard Model quarks via a colour-charged coannihilation partner. Recently it has been realized that non-perturbative dynamics, including the Sommerfeld effect, bound state formation/dissociat...
[ { "created": "Tue, 6 Nov 2018 19:00:07 GMT", "version": "v1" }, { "created": "Sun, 17 Mar 2019 13:31:09 GMT", "version": "v2" } ]
2019-03-19
[ [ "Biondini", "S.", "" ], [ "Vogl", "S.", "" ] ]
We investigate the phenomenology of a simplified model with a Majorana fermion as dark matter candidate which interacts with Standard Model quarks via a colour-charged coannihilation partner. Recently it has been realized that non-perturbative dynamics, including the Sommerfeld effect, bound state formation/dissociatio...
hep-ph/0005288
Ernest Ma
D. A. Demir (ICTP), Ernest Ma (UC Riverside), Utpal Sarkar (UC Riverside and PRL, Ahmedabad)
Neutrino Masses and the Gluino Axion Model
8 pages, no figure
J.Phys. G26 (2000) L117
10.1088/0954-3899/26/11/101
IC/00/65, UCRHEP-T277 (May 2000)
hep-ph
null
We extend the recently proposed gluino axion model to include neutrino masses. We discuss how the canonical seesaw model and the Higgs triplet model may be realized in this framework. In the former case, the heavy singlet neutrinos are contained in superfields which do not have any vacuum expectation value, whereas t...
[ { "created": "Mon, 29 May 2000 18:32:14 GMT", "version": "v1" } ]
2009-10-31
[ [ "Demir", "D. A.", "", "ICTP" ], [ "Ma", "Ernest", "", "UC Riverside" ], [ "Sarkar", "Utpal", "", "UC\n Riverside and PRL, Ahmedabad" ] ]
We extend the recently proposed gluino axion model to include neutrino masses. We discuss how the canonical seesaw model and the Higgs triplet model may be realized in this framework. In the former case, the heavy singlet neutrinos are contained in superfields which do not have any vacuum expectation value, whereas the...
1811.06003
Toshinori Matsui
Toshinori Matsui
Exploring first order phase transition in $U(1)$ extended models by complementarity between collider measurements and cosmological observations
4 pages, 2 figures. Talk presented at the International Workshop on Future Linear Colliders (LCWS2018), Arlington, Texas, 22-26 October 2018. C18-10-22
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider models with the $U(1)_X$ gauge symmetry, which is spontaneously broken by dark Higgs mechanism. We discuss patterns of the electroweak phase transition and detectability of gravitational waves (GWs) when strongly first order phase transition (1stOPT) occurs. It is pointed out that the collider bounds on t...
[ { "created": "Wed, 14 Nov 2018 19:04:12 GMT", "version": "v1" } ]
2018-11-16
[ [ "Matsui", "Toshinori", "" ] ]
We consider models with the $U(1)_X$ gauge symmetry, which is spontaneously broken by dark Higgs mechanism. We discuss patterns of the electroweak phase transition and detectability of gravitational waves (GWs) when strongly first order phase transition (1stOPT) occurs. It is pointed out that the collider bounds on the...
1708.09408
Joao Silva
Miguel P. Bento, Howard E. Haber, J. C. Rom\~ao, Jo\~ao P. Silva
Multi-Higgs doublet models: physical parametrization, sum rules and unitarity bounds
66 pages, 3 figures. v2: refs added
null
10.1007/JHEP11(2017)095
CFTP-17-005, SCIPP-17/10
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
If the scalar sector of the Standard Model is non-minimal, one might expect multiple generations of the hypercharge-1/2 scalar doublet analogous to the generational structure of the fermions. In this work, we examine the structure of a Higgs sector consisting of N Higgs doublets (where N \geq 2). It is particularly c...
[ { "created": "Wed, 30 Aug 2017 18:04:25 GMT", "version": "v1" }, { "created": "Fri, 8 Sep 2017 21:49:40 GMT", "version": "v2" } ]
2017-12-06
[ [ "Bento", "Miguel P.", "" ], [ "Haber", "Howard E.", "" ], [ "Romão", "J. C.", "" ], [ "Silva", "João P.", "" ] ]
If the scalar sector of the Standard Model is non-minimal, one might expect multiple generations of the hypercharge-1/2 scalar doublet analogous to the generational structure of the fermions. In this work, we examine the structure of a Higgs sector consisting of N Higgs doublets (where N \geq 2). It is particularly con...
1811.11699
Simon Badger
Simon Badger, Christian Br{\o}nnum-Hansen, Heribertus Bayu Hartanto, Tiziano Peraro
Analytic helicity amplitudes for two-loop five-gluon scattering: the single-minus case
18 pages, 2 figures
null
10.1007/JHEP01(2019)186
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a compact analytic expression for the leading colour two-loop five-gluon amplitude in Yang-Mills theory with a single negative helicity and four positive helicities. The analytic result is reconstructed from numerical evaluations over finite fields. The numerical method combines integrand reduction, integr...
[ { "created": "Wed, 28 Nov 2018 17:37:08 GMT", "version": "v1" } ]
2019-02-20
[ [ "Badger", "Simon", "" ], [ "Brønnum-Hansen", "Christian", "" ], [ "Hartanto", "Heribertus Bayu", "" ], [ "Peraro", "Tiziano", "" ] ]
We present a compact analytic expression for the leading colour two-loop five-gluon amplitude in Yang-Mills theory with a single negative helicity and four positive helicities. The analytic result is reconstructed from numerical evaluations over finite fields. The numerical method combines integrand reduction, integrat...
1212.0301
Andrea Shindler
N. Carrasco, P. Dimopoulos, R. Frezzotti, V. Gimenez, G. Herdoiza, V. Lubicz, G. Martinelli, C. Michael, D. Palao, G. C. Rossi, F. Sanfilippo, A. Shindler, S. Simula, C. Tarantino
B-physics from lattice QCD...with a twist
6 pages, 3 figures. Proceedings of the 36th International Conference on High Energy Physics - ICHEP 2012; July 4-11 2012; Melbourne, Australia
PoS(ICHEP2012)428
null
IFIC/12-80; FTUAM-12-113; IFT-UAM/CSIC-12-111; RM3-TH/12-20; LTH966; CERN-PH-TH/2012-328
hep-ph hep-ex hep-lat
http://creativecommons.org/licenses/by-nc-sa/3.0/
We present a precise lattice QCD determination of the b-quark mass, of the B and Bs decay constants and first results for the B-meson bag parameters. For our computation we employ the so-called ratio method and our results benefit from the use of improved interpolating operators for the B-mesons. QCD calculations are...
[ { "created": "Mon, 3 Dec 2012 07:17:16 GMT", "version": "v1" } ]
2012-12-04
[ [ "Carrasco", "N.", "" ], [ "Dimopoulos", "P.", "" ], [ "Frezzotti", "R.", "" ], [ "Gimenez", "V.", "" ], [ "Herdoiza", "G.", "" ], [ "Lubicz", "V.", "" ], [ "Martinelli", "G.", "" ], [ "Michael", ...
We present a precise lattice QCD determination of the b-quark mass, of the B and Bs decay constants and first results for the B-meson bag parameters. For our computation we employ the so-called ratio method and our results benefit from the use of improved interpolating operators for the B-mesons. QCD calculations are p...
1306.4445
Lewis Tunstall
R.J. Crewther and Lewis C. Tunstall
Infrared Fixed Point in the Strong Running Coupling: Unraveling the \Delta I=1/2 puzzle in K-Decays
8 pages, 3 figures. Contribution to the proceedings of the workshop "Determination of the Fundamental Parameters of QCD", Nanyang Technological University, Singapore, 18-22 March 2013, to be published in Mod. Phys. Lett. A
Mod.Phys.Lett. A28 (2013) 1360010
10.1142/S0217732313600109
ADP-13-14/T834
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this talk, we present an explanation for the Delta I = 1/2 rule in K-decays based on the premise of an infrared fixed point alpha_IR in the running coupling alpha_s of quantum chromodynamics (QCD) for three light quarks u,d,s. At the fixed point, the quark condensate spontaneously breaks scale and chiral SU(3)_L x...
[ { "created": "Wed, 19 Jun 2013 07:44:14 GMT", "version": "v1" } ]
2013-12-13
[ [ "Crewther", "R. J.", "" ], [ "Tunstall", "Lewis C.", "" ] ]
In this talk, we present an explanation for the Delta I = 1/2 rule in K-decays based on the premise of an infrared fixed point alpha_IR in the running coupling alpha_s of quantum chromodynamics (QCD) for three light quarks u,d,s. At the fixed point, the quark condensate spontaneously breaks scale and chiral SU(3)_L x S...
0707.0005
Scott Thomas
Michael Dine, Nathan Seiberg and Scott Thomas
Higgs Physics as a Window Beyond the MSSM (BMSSM)
LaTex, 28 pages
Phys.Rev.D76:095004,2007
10.1103/PhysRevD.76.095004
SCIPP 07/13, RU-NHETC-07-10
hep-ph
null
We interpret the current experimental limit on the lightest Higgs boson mass to suggest that if nature is supersymmetric, there are additional interactions beyond those of the MSSM coming from new degrees of freedom around the TeV scale. Within an effective field theory analysis, the leading order corrections to the ...
[ { "created": "Fri, 29 Jun 2007 20:08:08 GMT", "version": "v1" }, { "created": "Tue, 10 Jul 2007 19:49:25 GMT", "version": "v2" }, { "created": "Tue, 7 Aug 2007 20:09:48 GMT", "version": "v3" } ]
2008-11-26
[ [ "Dine", "Michael", "" ], [ "Seiberg", "Nathan", "" ], [ "Thomas", "Scott", "" ] ]
We interpret the current experimental limit on the lightest Higgs boson mass to suggest that if nature is supersymmetric, there are additional interactions beyond those of the MSSM coming from new degrees of freedom around the TeV scale. Within an effective field theory analysis, the leading order corrections to the MS...
hep-ph/0102047
Mark G. Alford
Mark Alford (Glasgow)
Color superconducting quark matter
31 pages, LaTeX. To appear in Annu. Rev. Nucl. Part. Sci. (Minor corrections, references added.)
Ann.Rev.Nucl.Part.Sci.51:131-160,2001
10.1146/annurev.nucl.51.101701.132449
GUTPA/01/02/01
hep-ph
null
I review recent progress in our understanding of the color superconducting phase of matter above nuclear density, giving particular emphasis to the effort to find observable signatures of the presence of this phase in compact stars.
[ { "created": "Mon, 5 Feb 2001 17:02:00 GMT", "version": "v1" }, { "created": "Fri, 4 May 2001 16:19:01 GMT", "version": "v2" } ]
2014-11-17
[ [ "Alford", "Mark", "", "Glasgow" ] ]
I review recent progress in our understanding of the color superconducting phase of matter above nuclear density, giving particular emphasis to the effort to find observable signatures of the presence of this phase in compact stars.
2012.15039
Wen-Fei Wang
Wen-Fei Wang
Contributions for the kaon pair from $\rho(770)$, $\omega(782)$ and their excited states in the $B\to K\bar K h$ decays
25 pages, 3 figures, typos in Eq.(25) corrected
Phys. Rev. D 103, 056021 (2021)
10.1103/PhysRevD.103.056021
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
We study the resonance contributions for the kaon pair originating from the intermediate states $\rho(770,1450,1700)$ and $\omega(782,1420,1650)$ for the three-body hadronic decays $B\to K\bar K h$ in the perturbative QCD approach, where $h=(\pi, K)$. The branching fractions of the virtual contributions for $K\bar K$...
[ { "created": "Wed, 30 Dec 2020 04:45:31 GMT", "version": "v1" }, { "created": "Tue, 23 Feb 2021 06:16:12 GMT", "version": "v2" }, { "created": "Fri, 9 Jul 2021 10:19:31 GMT", "version": "v3" } ]
2021-07-12
[ [ "Wang", "Wen-Fei", "" ] ]
We study the resonance contributions for the kaon pair originating from the intermediate states $\rho(770,1450,1700)$ and $\omega(782,1420,1650)$ for the three-body hadronic decays $B\to K\bar K h$ in the perturbative QCD approach, where $h=(\pi, K)$. The branching fractions of the virtual contributions for $K\bar K$ f...
2012.05502
Rohit Gupta
Rohit Gupta and Satyajit Jena
A generalized approach to study low as well as high $p_T$ regime of transverse momentum spectra
null
Proceedings of Science ICHEP2020 579
null
null
hep-ph
http://creativecommons.org/licenses/by-nc-nd/4.0/
A good understanding of the transverse momentum $(p_T)$ spectra is pivotal in the study of QCD matter created during the heavy-ion collision. Considering the difference in the underlying particle production mechanism, $p_T$ spectra can be divided into two distinct regions. Low-$p_T$ region corresponds to particle pro...
[ { "created": "Thu, 10 Dec 2020 08:13:13 GMT", "version": "v1" } ]
2021-03-23
[ [ "Gupta", "Rohit", "" ], [ "Jena", "Satyajit", "" ] ]
A good understanding of the transverse momentum $(p_T)$ spectra is pivotal in the study of QCD matter created during the heavy-ion collision. Considering the difference in the underlying particle production mechanism, $p_T$ spectra can be divided into two distinct regions. Low-$p_T$ region corresponds to particle produ...
0803.2626
Robi Peschanski
Robi Peschanski
On the maximal noise for stochastic and QCD traveling waves
19 pages, 2 figures
Nucl.Phys.B805:377-390,2008
10.1016/j.nuclphysb.2008.06.010
null
hep-ph cond-mat.stat-mech hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Using the relation of a set of nonlinear Langevin equations with reaction-diffusion processes, we note the existence of a maximal strength of the noise for the stochastic traveling wave solutions of these equations. Its determination is obtained using the field-theoretical analysis of branching-annihilation random wa...
[ { "created": "Tue, 18 Mar 2008 13:26:51 GMT", "version": "v1" } ]
2008-11-26
[ [ "Peschanski", "Robi", "" ] ]
Using the relation of a set of nonlinear Langevin equations with reaction-diffusion processes, we note the existence of a maximal strength of the noise for the stochastic traveling wave solutions of these equations. Its determination is obtained using the field-theoretical analysis of branching-annihilation random walk...
0805.1735
Adam K. Leibovich
Chul Kim, Adam K. Leibovich, and Thomas Mehen
Nonperturbative Charming Penguin Contributions to Isospin Asymmetries in Radiative B decays
14 pages, 4 figures. Updated analysis of charming penguin extraction
Phys.Rev.D78:054024,2008
10.1103/PhysRevD.78.054024
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Recent experimental data on the radiative decays B -> V gamma, where V is a light vector meson, find small isospin violation in B -> K^* gamma while isospin asymmetries in B -> rho gamma are of order 20%, with large uncertainties. Using Soft-Collinear Effective Theory, we calculate isospin asymmetries in these radiat...
[ { "created": "Mon, 12 May 2008 20:15:01 GMT", "version": "v1" }, { "created": "Thu, 12 Jun 2008 16:50:03 GMT", "version": "v2" } ]
2008-11-26
[ [ "Kim", "Chul", "" ], [ "Leibovich", "Adam K.", "" ], [ "Mehen", "Thomas", "" ] ]
Recent experimental data on the radiative decays B -> V gamma, where V is a light vector meson, find small isospin violation in B -> K^* gamma while isospin asymmetries in B -> rho gamma are of order 20%, with large uncertainties. Using Soft-Collinear Effective Theory, we calculate isospin asymmetries in these radiativ...
hep-ph/9803310
Christopher Kolda
Christopher Kolda, Stefan Pokorski and Nir Polonsky
Stabilized Singlets in Supergravity as a Source of the mu-parameter
9 pages, LaTeX
Phys.Rev.Lett. 80 (1998) 5263-5266
10.1103/PhysRevLett.80.5263
IASSNS-HEP-97-137, CERN-TH/98-75, RU-97-97
hep-ph
null
Within the context of supergravity-coupled supersymmetry, fields which are gauge and global singlets are usually considered anathema. Their vacuum expectation values are shifted by quadratically divergent tadpole diagrams which are cutoff at the Planck scale, destabilizing the classical potential and driving the sing...
[ { "created": "Wed, 11 Mar 1998 16:47:56 GMT", "version": "v1" } ]
2009-10-31
[ [ "Kolda", "Christopher", "" ], [ "Pokorski", "Stefan", "" ], [ "Polonsky", "Nir", "" ] ]
Within the context of supergravity-coupled supersymmetry, fields which are gauge and global singlets are usually considered anathema. Their vacuum expectation values are shifted by quadratically divergent tadpole diagrams which are cutoff at the Planck scale, destabilizing the classical potential and driving the single...
hep-ph/0412165
Massimo Passera
J. Bernabeu, J. Papavassiliou, and M. Passera
Dynamical Zero in Antineutrino_e -- Electron Scattering and the Neutrino Magnetic Moment
13 pages, 3 figures. V2: one figure and comments added. Published version
Phys.Lett.B613:162-169,2005
10.1016/j.physletb.2005.03.055
null
hep-ph
null
The Standard Model differential cross section for $\bar{\nu}_e-e^-$ elastic scattering vanishes exactly, at lowest order, for forward electrons and incident $\bar{\nu}_e$ energy close to the rest energy of the electron. This dynamical zero is not induced by a fundamental symmetry of the Lagrangian but by a destructiv...
[ { "created": "Mon, 13 Dec 2004 22:33:39 GMT", "version": "v1" }, { "created": "Thu, 5 May 2005 20:13:51 GMT", "version": "v2" } ]
2008-11-26
[ [ "Bernabeu", "J.", "" ], [ "Papavassiliou", "J.", "" ], [ "Passera", "M.", "" ] ]
The Standard Model differential cross section for $\bar{\nu}_e-e^-$ elastic scattering vanishes exactly, at lowest order, for forward electrons and incident $\bar{\nu}_e$ energy close to the rest energy of the electron. This dynamical zero is not induced by a fundamental symmetry of the Lagrangian but by a destructive ...
hep-ph/0302138
Yuly Shabelski
J.Dias de Deus and Yu. M. Shabelski
An Estimate of the Percolation Parameter in Heavy Ion Collisions
5 pages
Eur.Phys.J.A20:457-458,2004
10.1140/epja/i2003-10162-7
null
hep-ph
null
From existing hadron and heavy ion collisions data on \bar{p}/p central production we estimate the value of the percolation parameter at RHIC energies.
[ { "created": "Mon, 17 Feb 2003 12:10:48 GMT", "version": "v1" } ]
2011-10-11
[ [ "de Deus", "J. Dias", "" ], [ "Shabelski", "Yu. M.", "" ] ]
From existing hadron and heavy ion collisions data on \bar{p}/p central production we estimate the value of the percolation parameter at RHIC energies.
1602.04206
Claudia Hagedorn
Claudia Hagedorn, Emiliano Molinaro
Flavor and CP symmetries for leptogenesis and 0nubb decay
1+59 pages, 10 figures, 3 tables; v2 matches journal version
null
10.1016/j.nuclphysb.2017.03.015
CP3-Origins-2016-005 DNRF90, DIAS-2016-5
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We perform a comprehensive analysis of the phenomenology of leptonic low and high energy CP phases in a scenario with three heavy right-handed neutrinos in which a flavor and a CP symmetry are non-trivially broken. All CP phases as well as lepton mixing angles are determined by the properties of the flavor and CP sym...
[ { "created": "Fri, 12 Feb 2016 20:54:18 GMT", "version": "v1" }, { "created": "Sun, 23 Apr 2017 10:50:19 GMT", "version": "v2" } ]
2017-04-26
[ [ "Hagedorn", "Claudia", "" ], [ "Molinaro", "Emiliano", "" ] ]
We perform a comprehensive analysis of the phenomenology of leptonic low and high energy CP phases in a scenario with three heavy right-handed neutrinos in which a flavor and a CP symmetry are non-trivially broken. All CP phases as well as lepton mixing angles are determined by the properties of the flavor and CP symme...
hep-ph/9606295
Denis Michaud
C.P. Burgess and D. Michaud
Neutrino Propagation in a Fluctuating Sun
45 pages, including 2 postscript figures. (We had a subsection in section 2 to detail the approximations leading to our results. We also fixed some typography and added some references)
Annals Phys.256:1-38,1997
10.1006/aphy.1996.5660
McGill-96/18
hep-ph astro-ph
null
We adapt to neutrino physics a general formulation for particle propagation in fluctuating media, initially developed for applications to electromagnetism and neutron optics. In leading approximation this formalism leads to the usual MSW effective hamiltonian governing neutrino propagation through a medium. Next-to-l...
[ { "created": "Mon, 10 Jun 1996 20:43:54 GMT", "version": "v1" }, { "created": "Wed, 3 Jul 1996 21:57:19 GMT", "version": "v2" }, { "created": "Sun, 18 Aug 1996 03:00:10 GMT", "version": "v3" } ]
2014-11-17
[ [ "Burgess", "C. P.", "" ], [ "Michaud", "D.", "" ] ]
We adapt to neutrino physics a general formulation for particle propagation in fluctuating media, initially developed for applications to electromagnetism and neutron optics. In leading approximation this formalism leads to the usual MSW effective hamiltonian governing neutrino propagation through a medium. Next-to-lea...
2101.00224
Mohamed Jakha
S. Mouslih, M. Jakha, I. Dahiri, S. Taj, B. Manaut and E. Siher
New phenomena in laser-assisted leptonic decays of the negatively charged boson $W^{-}$
19 pages, 13 figures
null
10.1088/1402-4896/ac5d6e
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
In this paper and within the standard Glashow-Weinberg-Salam model of electroweak interactions, we study theoretically the leptonic decay of the $W^{-}$-boson $(W^{-}\rightarrow \ell^{-}\bar{\nu}_{\ell})$ in the presence of a circularly polarized electromagnetic field and we examine the laser effect, in terms of its ...
[ { "created": "Fri, 1 Jan 2021 12:30:34 GMT", "version": "v1" }, { "created": "Tue, 23 Feb 2021 19:36:45 GMT", "version": "v2" } ]
2022-04-06
[ [ "Mouslih", "S.", "" ], [ "Jakha", "M.", "" ], [ "Dahiri", "I.", "" ], [ "Taj", "S.", "" ], [ "Manaut", "B.", "" ], [ "Siher", "E.", "" ] ]
In this paper and within the standard Glashow-Weinberg-Salam model of electroweak interactions, we study theoretically the leptonic decay of the $W^{-}$-boson $(W^{-}\rightarrow \ell^{-}\bar{\nu}_{\ell})$ in the presence of a circularly polarized electromagnetic field and we examine the laser effect, in terms of its fi...
1112.4423
Ted Rogers
S. Mert Aybat, Alexei Prokudin and Ted C. Rogers
Calculation of TMD Evolution for Transverse Single Spin Asymmetry Measurements
4 pages, 2 figures. Version published in Physical Review Letters
null
10.1103/PhysRevLett.108.242003
JLAB-THY-11-1466; NIKHEF-2011-033; YITP-SB-11-48
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The Sivers transverse single spin asymmetry (TSSA) is calculated and compared at different scales using the TMD evolution equations applied to previously existing extractions. We apply the Collins-Soper-Sterman (CSS) formalism, using the version recently developed by Collins. Our calculations rely on the universality...
[ { "created": "Mon, 19 Dec 2011 17:52:54 GMT", "version": "v1" }, { "created": "Tue, 20 Dec 2011 23:37:59 GMT", "version": "v2" }, { "created": "Wed, 27 Jun 2012 15:31:56 GMT", "version": "v3" } ]
2013-05-30
[ [ "Aybat", "S. Mert", "" ], [ "Prokudin", "Alexei", "" ], [ "Rogers", "Ted C.", "" ] ]
The Sivers transverse single spin asymmetry (TSSA) is calculated and compared at different scales using the TMD evolution equations applied to previously existing extractions. We apply the Collins-Soper-Sterman (CSS) formalism, using the version recently developed by Collins. Our calculations rely on the universality p...
hep-ph/9503231
Omar Miranda Romagnoli
M. Maya and O. G. Miranda
Constraints on Z1-Z2 Mixing from the Decay $Z1 \to e-e+$ in the left-right Symmetric Model
14 pages in Latex, 3 figures available on request
Z.Phys. C68 (1995) 481-484
10.1007/BF01620725
CINVESTAV-FIS-02/95
hep-ph
null
We examine the decay of $Z_1$ in electrons with recent data from LEP. The partial width $\Gamma(Z_1\to e^-e^+)$ is studied in the framework of a left-right symmetric model with standard electroweak corrections. Processes measured near the resonance has served to measure the neutral coupling constants very precisely, ...
[ { "created": "Fri, 3 Mar 1995 22:42:58 GMT", "version": "v1" } ]
2009-10-28
[ [ "Maya", "M.", "" ], [ "Miranda", "O. G.", "" ] ]
We examine the decay of $Z_1$ in electrons with recent data from LEP. The partial width $\Gamma(Z_1\to e^-e^+)$ is studied in the framework of a left-right symmetric model with standard electroweak corrections. Processes measured near the resonance has served to measure the neutral coupling constants very precisely, wh...
1902.07196
Greger Torgrimsson
Greger Torgrimsson
Thermally versus dynamically assisted Schwinger pair production
Version 2: Results unchanged, references added, matches PRD version. 9 pages, 4 figures
Phys. Rev. D 99, 096007 (2019)
10.1103/PhysRevD.99.096007
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study electron-positron pair production by the combination of a strong, constant electric field and a thermal background. We show that this process is similar to dynamically assisted Schwinger pair production, where the strong field is instead assisted by another coherent field, which is weaker but faster. We trea...
[ { "created": "Tue, 19 Feb 2019 18:48:57 GMT", "version": "v1" }, { "created": "Wed, 15 May 2019 16:44:02 GMT", "version": "v2" } ]
2019-05-16
[ [ "Torgrimsson", "Greger", "" ] ]
We study electron-positron pair production by the combination of a strong, constant electric field and a thermal background. We show that this process is similar to dynamically assisted Schwinger pair production, where the strong field is instead assisted by another coherent field, which is weaker but faster. We treat ...
hep-ph/9912463
Helmut Eberl
H. Eberl, K. Hidaka, S. Kraml, W. Majerotto, and Y. Yamada
Improved SUSY QCD corrections to Higgs boson decays into quarks and squarks
Version to be published in PRD
Phys.Rev.D62:055006,2000
10.1103/PhysRevD.62.055006
HEPHY-PUB 725/99, TGU-25, TU-583
hep-ph
null
We improve the calculation of the supersymmetric $O(\alpha_s)$ QCD corrections to the decays of Higgs bosons into quarks and squarks in the Minimal Supersymmetric Standard Model. In the on-shell renormalization scheme these corrections can be very large, which makes the perturbative expansion unreliable. This is espe...
[ { "created": "Wed, 22 Dec 1999 13:47:11 GMT", "version": "v1" }, { "created": "Tue, 11 Jan 2000 11:51:02 GMT", "version": "v2" }, { "created": "Thu, 11 May 2000 09:10:21 GMT", "version": "v3" } ]
2008-11-26
[ [ "Eberl", "H.", "" ], [ "Hidaka", "K.", "" ], [ "Kraml", "S.", "" ], [ "Majerotto", "W.", "" ], [ "Yamada", "Y.", "" ] ]
We improve the calculation of the supersymmetric $O(\alpha_s)$ QCD corrections to the decays of Higgs bosons into quarks and squarks in the Minimal Supersymmetric Standard Model. In the on-shell renormalization scheme these corrections can be very large, which makes the perturbative expansion unreliable. This is especi...
2201.06948
Vladimir A. Petrov
Vladimir Petrov, Nikolay Tkachenko
Odderon: Lost or/and Found?
null
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
This is a quick survey of theoretical and experimental efforts to understand and identify the Odderon.
[ { "created": "Tue, 18 Jan 2022 13:15:45 GMT", "version": "v1" } ]
2022-01-19
[ [ "Petrov", "Vladimir", "" ], [ "Tkachenko", "Nikolay", "" ] ]
This is a quick survey of theoretical and experimental efforts to understand and identify the Odderon.
2112.09635
Alessandro Podo
Roberto Contino, Alessandro Podo, Filippo Revello
Chiral models of composite axions and accidental Peccei-Quinn symmetry
48 pages. v2: improved classification of models with more inclusive selection criteria; added clarifications and other minor changes. v3: matches published version
null
10.1007/JHEP04(2022)180
null
hep-ph hep-th
http://creativecommons.org/licenses/by/4.0/
We introduce a class of composite axion models that provide a natural solution to the strong CP problem, and possibly account for the observed dark matter abundance. The QCD axion arises as a composite Nambu-Goldstone boson (NGB) from the dynamics of a chiral gauge theory with a strongly-interacting and confining SU(...
[ { "created": "Fri, 17 Dec 2021 17:16:08 GMT", "version": "v1" }, { "created": "Tue, 1 Mar 2022 18:21:28 GMT", "version": "v2" }, { "created": "Wed, 11 May 2022 18:10:02 GMT", "version": "v3" } ]
2022-05-13
[ [ "Contino", "Roberto", "" ], [ "Podo", "Alessandro", "" ], [ "Revello", "Filippo", "" ] ]
We introduce a class of composite axion models that provide a natural solution to the strong CP problem, and possibly account for the observed dark matter abundance. The QCD axion arises as a composite Nambu-Goldstone boson (NGB) from the dynamics of a chiral gauge theory with a strongly-interacting and confining SU(N)...
hep-ph/9705367
Jeremy S. Heyl
Jeremy S. Heyl and Lars Hernquist
Birefringence and Dichroism of the QED Vacuum
8 pages, 2 figures, to appear in Journal of Physics A
J.Phys.A30:6485-6492,1997
10.1088/0305-4470/30/18/022
null
hep-ph astro-ph
null
We use an analytic form for the Heisenberg-Euler Lagrangian to calculate the birefringent and dichroic properties of the vacuum for arbitrarily strong wrenchless fields. PACS : 12.20.Ds, 42.25.Lc 97.60.Jd, 98.70.Rz
[ { "created": "Tue, 20 May 1997 20:11:42 GMT", "version": "v1" } ]
2008-11-26
[ [ "Heyl", "Jeremy S.", "" ], [ "Hernquist", "Lars", "" ] ]
We use an analytic form for the Heisenberg-Euler Lagrangian to calculate the birefringent and dichroic properties of the vacuum for arbitrarily strong wrenchless fields. PACS : 12.20.Ds, 42.25.Lc 97.60.Jd, 98.70.Rz
2007.13313
Claude Duhr
Claude Duhr, Falko Dulat, Bernhard Mistlberger
Charged Current Drell-Yan Production at N3LO
22 pages, 11 figures. v2: Fixed mistake in figure 8
null
10.1007/JHEP11(2020)143
CERN-TH-2020-121, SLAC-PUB-17539
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present the production cross section for a lepton-neutrino pair at the Large Hadron Collider computed at next-to-next-to-next-to leading order (N3LO) in QCD perturbation theory. We compute the partonic coefficient functions of a virtual $W^{\pm}$ boson at this order. We then use these analytic functions to study t...
[ { "created": "Mon, 27 Jul 2020 05:38:20 GMT", "version": "v1" }, { "created": "Sat, 19 Sep 2020 18:38:22 GMT", "version": "v2" } ]
2020-12-30
[ [ "Duhr", "Claude", "" ], [ "Dulat", "Falko", "" ], [ "Mistlberger", "Bernhard", "" ] ]
We present the production cross section for a lepton-neutrino pair at the Large Hadron Collider computed at next-to-next-to-next-to leading order (N3LO) in QCD perturbation theory. We compute the partonic coefficient functions of a virtual $W^{\pm}$ boson at this order. We then use these analytic functions to study the...
hep-ph/9501330
null
L. Motyka and K. Zalewski (Jagellonian University, Poland)
NONRELATIVISTIC MODEL FOR $b\OVERLINE{b}$ QUARKONIA
6 pages, Latex file
Zs. Phys. C69 (1995) 343
null
TPJU - 1/95
hep-ph
null
Experimental data for $b\bar{b}$ quarkonia have been compared with the predictions of a variety of nonrelativistic quark models. It is found that a potential $a\sqrt{r} - b/r +$ const gives good agreement, while many others do not. Some implications of this observation are discussed.
[ { "created": "Wed, 18 Jan 1995 11:29:00 GMT", "version": "v1" } ]
2007-05-23
[ [ "Motyka", "L.", "", "Jagellonian University, Poland" ], [ "Zalewski", "K.", "", "Jagellonian University, Poland" ] ]
Experimental data for $b\bar{b}$ quarkonia have been compared with the predictions of a variety of nonrelativistic quark models. It is found that a potential $a\sqrt{r} - b/r +$ const gives good agreement, while many others do not. Some implications of this observation are discussed.
1910.02666
Jing-Yu Zhu
Shao-Feng Ge and Jing-yu Zhu
Phenomenological Advantages of the Normal Neutrino Mass Ordering
8 pages, 5 figures, the version to be published in Chinese Physics C
null
10.1088/1674-1137/44/8/083103
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The preference of the normal neutrino mass ordering from the recent cosmological constraint and the global fit of neutrino oscillation experiments does not seem like a wise choice at first glance since it obscures the neutrinoless double beta decay and hence the Majorana nature of neutrinos. Contrary to this naive ex...
[ { "created": "Mon, 7 Oct 2019 08:28:36 GMT", "version": "v1" }, { "created": "Tue, 24 Dec 2019 12:01:38 GMT", "version": "v2" }, { "created": "Thu, 23 Jul 2020 13:53:06 GMT", "version": "v3" } ]
2020-08-26
[ [ "Ge", "Shao-Feng", "" ], [ "Zhu", "Jing-yu", "" ] ]
The preference of the normal neutrino mass ordering from the recent cosmological constraint and the global fit of neutrino oscillation experiments does not seem like a wise choice at first glance since it obscures the neutrinoless double beta decay and hence the Majorana nature of neutrinos. Contrary to this naive expe...
1905.01031
Volodymyr Vovchenko
Volodymyr Vovchenko, Jan Steinheimer, Owe Philipsen, Horst Stoecker
QCD equation of state at finite baryon density with fugacity expansion
8 pages, 4 figures. Contribution to the proceedings of the CPOD2018 conference, Corfu Island, Greece, September 24-28, 2018
null
null
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We explore the QCD equation of state at finite baryon density through an expansion in baryon number fugacity, making use of the recent lattice data on the four leading Fourier coefficients of the expansion. A state-of-the-art description of the lattice data at both imaginary $\mu_B$ and $\mu_B = 0$ is provided by the...
[ { "created": "Fri, 3 May 2019 04:25:19 GMT", "version": "v1" } ]
2019-05-06
[ [ "Vovchenko", "Volodymyr", "" ], [ "Steinheimer", "Jan", "" ], [ "Philipsen", "Owe", "" ], [ "Stoecker", "Horst", "" ] ]
We explore the QCD equation of state at finite baryon density through an expansion in baryon number fugacity, making use of the recent lattice data on the four leading Fourier coefficients of the expansion. A state-of-the-art description of the lattice data at both imaginary $\mu_B$ and $\mu_B = 0$ is provided by the c...
0904.0139
Petr Benes
Petr Benes
Fermion flavor mixing in models with dynamical mass generation
14 pages, REVTeX4, 2 eps figures; discussion of momentum-dependence of proper vertex and polarization tensors added, gauge boson mixing considered, additional references added; version published in Phys. Rev. D
Phys.Rev.D81:065029,2010
10.1103/PhysRevD.81.065029
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a model-independent method of dealing with fermion flavor mixing in the case when instead of constant, momentum-independent mass matrices one has rather momentum-dependent self-energies. This situation is typical for strongly coupled models of dynamical fermion mass generation. We demonstrate our approach ...
[ { "created": "Wed, 1 Apr 2009 12:02:57 GMT", "version": "v1" }, { "created": "Tue, 30 Mar 2010 12:57:33 GMT", "version": "v2" } ]
2012-02-03
[ [ "Benes", "Petr", "" ] ]
We present a model-independent method of dealing with fermion flavor mixing in the case when instead of constant, momentum-independent mass matrices one has rather momentum-dependent self-energies. This situation is typical for strongly coupled models of dynamical fermion mass generation. We demonstrate our approach on...
hep-ph/9511276
Yasuko Sato
K. Kobayakawa, Y. Sato and S. Tanaka
Moduli Effects on Neutrino Oscillations
17pages, Latex, 3 figures (available from the author upon request by FAX or mail)
Phys.Rev.D54:1204-1211,1996
10.1103/PhysRevD.54.1204
KOBE-FHD-95-07
hep-ph
null
We point out the possibility to detect the low-energy signals of moduli in the superstring theory through the neutrino oscillation. The idea is based on the characteristics that the couplings of moduli are different from matter to matter. We estimate the oscillation probability both in the baseline and solar neutrino...
[ { "created": "Thu, 9 Nov 1995 11:42:40 GMT", "version": "v1" }, { "created": "Sun, 3 Dec 1995 09:50:18 GMT", "version": "v2" }, { "created": "Tue, 1 Oct 1996 07:12:57 GMT", "version": "v3" } ]
2014-11-17
[ [ "Kobayakawa", "K.", "" ], [ "Sato", "Y.", "" ], [ "Tanaka", "S.", "" ] ]
We point out the possibility to detect the low-energy signals of moduli in the superstring theory through the neutrino oscillation. The idea is based on the characteristics that the couplings of moduli are different from matter to matter. We estimate the oscillation probability both in the baseline and solar neutrino o...
hep-ph/0303252
Kouhei Hasegawa
K.Hasegawa, C. S. Lim, and K. Ogure
Escape from washing out of baryon number in a two-zero-texture general Zee model compatible with the large mixing angle MSW solution
22 pages, 2 eps figures, Type set revtex4
Phys.Rev. D68 (2003) 053006
10.1103/PhysRevD.68.053006
KOBE-TH-03-04
hep-ph astro-ph
null
We propose a two-zero-texture general Zee model, compatible with the large mixing angle Mikheyev-Smirnov-Wolfenstein solution. The washing out of the baryon number does not occur in this model for an adequate parameter range. We check the consistency of a model with the constraints coming from flavor changing neutral...
[ { "created": "Sat, 29 Mar 2003 19:16:23 GMT", "version": "v1" }, { "created": "Fri, 4 Apr 2003 07:17:51 GMT", "version": "v2" }, { "created": "Sun, 27 Apr 2003 07:00:54 GMT", "version": "v3" }, { "created": "Thu, 9 Oct 2003 16:02:51 GMT", "version": "v4" } ]
2009-11-10
[ [ "Hasegawa", "K.", "" ], [ "Lim", "C. S.", "" ], [ "Ogure", "K.", "" ] ]
We propose a two-zero-texture general Zee model, compatible with the large mixing angle Mikheyev-Smirnov-Wolfenstein solution. The washing out of the baryon number does not occur in this model for an adequate parameter range. We check the consistency of a model with the constraints coming from flavor changing neutral c...
hep-ph/9406216
Mikhailov Serge
A.P. Bakulev and S.V. Mikhailov
The Photon Structure Function $F_2$ in QCD with Nonlocal Vacuum Quark Condensates
7, LATEX, E2-94-208
JETP Lett. 60 (1994) 150-155
null
null
hep-ph
null
We calculate the contribution from nonlocal vacuum condensates of quark fields to the hadronic part of the photon structure function $F_2(x)$ in the operator product expansion approach to QCD. The result is a smooth function of $x$ and its magnitude is comparable with one of gluon condensate. Extrapolation to the cas...
[ { "created": "Thu, 2 Jun 1994 22:56:22 GMT", "version": "v1" }, { "created": "Fri, 3 Jun 1994 20:44:26 GMT", "version": "v2" } ]
2008-02-03
[ [ "Bakulev", "A. P.", "" ], [ "Mikhailov", "S. V.", "" ] ]
We calculate the contribution from nonlocal vacuum condensates of quark fields to the hadronic part of the photon structure function $F_2(x)$ in the operator product expansion approach to QCD. The result is a smooth function of $x$ and its magnitude is comparable with one of gluon condensate. Extrapolation to the case ...
0708.0352
Alice Dechambre
A. Dechambre
Gribov Poles in Diffractive Physics
4 pages, 7 figures, Proceedings Jjc, La Rochelle, December 2006
null
null
null
hep-ph
null
High-energy diffractive physics has several interests for theoreticians and experimentalists. We first remind the reader of the main characteristics of diffraction in particles physics and present the calculation of a two-gluon exchange in which non-perturbative effects are introduced via new singularities from confi...
[ { "created": "Thu, 2 Aug 2007 14:11:15 GMT", "version": "v1" } ]
2007-08-03
[ [ "Dechambre", "A.", "" ] ]
High-energy diffractive physics has several interests for theoreticians and experimentalists. We first remind the reader of the main characteristics of diffraction in particles physics and present the calculation of a two-gluon exchange in which non-perturbative effects are introduced via new singularities from confine...
1412.8272
Chun-Khiang Chua
Hai-Yang Cheng, Chun-Khiang Chua
On the smallness of Tree-dominated Charmless Two-body Baryonic $B$ Decay Rates
15 pages, 3 figures
Phys. Rev. D 91, 036003 (2015)
10.1103/PhysRevD.91.036003
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The long awaited baryonic $B$ decay $\bar B{}^0\to p\bar p$ was recently observed by LHCb with a branching fraction of order $10^{-8}$. All the earlier model predictions are too large compared with experiment. In this work, we point out that for a given tree operator $O_i$, the contribution from its Fiertz transforme...
[ { "created": "Mon, 29 Dec 2014 07:32:42 GMT", "version": "v1" } ]
2015-03-05
[ [ "Cheng", "Hai-Yang", "" ], [ "Chua", "Chun-Khiang", "" ] ]
The long awaited baryonic $B$ decay $\bar B{}^0\to p\bar p$ was recently observed by LHCb with a branching fraction of order $10^{-8}$. All the earlier model predictions are too large compared with experiment. In this work, we point out that for a given tree operator $O_i$, the contribution from its Fiertz transformed ...
1006.1765
Marek Gazdzicki
Marek Gazdzicki, Mark Gorenstein, Peter Seyboth
Onset of deconfinement in nucleus-nucleus collisions: Review for pedestrians and experts
50 pages, 18 figures, the final version published in APP
Acta Phys.Polon.B42:307-351,2011
10.5506/APhysPolB.42.307
null
hep-ph hep-ex nucl-ex nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Evidence for the energy threshold of creating the quark-gluon plasma in nucleus-nucleus collisions, the so-called onset of deconfinement, has been found by the energy scan program of the NA49 experiment at the CERN SPS. In this paper we review the experimental and theoretical status of this phenomenon. First, the bas...
[ { "created": "Wed, 9 Jun 2010 11:12:11 GMT", "version": "v1" }, { "created": "Tue, 25 Jan 2011 17:05:32 GMT", "version": "v2" }, { "created": "Wed, 2 Feb 2011 12:35:11 GMT", "version": "v3" }, { "created": "Mon, 21 Feb 2011 16:49:59 GMT", "version": "v4" } ]
2011-06-28
[ [ "Gazdzicki", "Marek", "" ], [ "Gorenstein", "Mark", "" ], [ "Seyboth", "Peter", "" ] ]
Evidence for the energy threshold of creating the quark-gluon plasma in nucleus-nucleus collisions, the so-called onset of deconfinement, has been found by the energy scan program of the NA49 experiment at the CERN SPS. In this paper we review the experimental and theoretical status of this phenomenon. First, the basic...
1812.08521
Toshifumi Yamada
Naoyuki Haba, Yukihiro Mimura and Toshifumi Yamada
Proton Lifetime Upper Bound in Non-SUSY SU(5) GUT
18 pages, 5 figures. Version accepted for publication in Physical Review D
Phys. Rev. D 99, 075018 (2019)
10.1103/PhysRevD.99.075018
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In preparation for upcoming nucleon decay searches at Hyper-Kamiokande, it is important to derive a theoretical upper bound on the proton lifetime in a general class of grand unified theory (GUT) models. In this paper, we make an attempt along this direction for non-SUSY SU(5) models, under the mild restrictions that...
[ { "created": "Thu, 20 Dec 2018 12:32:42 GMT", "version": "v1" }, { "created": "Wed, 3 Apr 2019 12:50:56 GMT", "version": "v2" } ]
2019-04-24
[ [ "Haba", "Naoyuki", "" ], [ "Mimura", "Yukihiro", "" ], [ "Yamada", "Toshifumi", "" ] ]
In preparation for upcoming nucleon decay searches at Hyper-Kamiokande, it is important to derive a theoretical upper bound on the proton lifetime in a general class of grand unified theory (GUT) models. In this paper, we make an attempt along this direction for non-SUSY SU(5) models, under the mild restrictions that o...
hep-ph/0305136
Vladimir Vechernin
V. V. Vechernin and R. S. Kolevatov (St.Petersburg State University)
Cellular Approach to Long-Range $p_t$ and Multiplicity Correlations in the String Fusion Model
21 pages, LaTeX, 7 figures in PostScript, Russian version will appear in the journal "Vestnik SPbU"
null
null
SPbU-IP-03-03
hep-ph
null
The long-range $p_t$ and multiplicity($n$) correlations in high-energy nuclear collisions are studied in the framework of a simple cellular analog of the string fusion model. Two cases with local and global string fusion is considered. The $p_t$--$n$ and $n$--$n$ correlation functions and correlation coefficients a...
[ { "created": "Tue, 13 May 2003 12:33:34 GMT", "version": "v1" } ]
2007-05-23
[ [ "Vechernin", "V. V.", "", "St.Petersburg State University" ], [ "Kolevatov", "R. S.", "", "St.Petersburg State University" ] ]
The long-range $p_t$ and multiplicity($n$) correlations in high-energy nuclear collisions are studied in the framework of a simple cellular analog of the string fusion model. Two cases with local and global string fusion is considered. The $p_t$--$n$ and $n$--$n$ correlation functions and correlation coefficients are c...
2402.07848
Mohammad Yousuf Jamal
Indrani Nilima, Mujeeb Hasan, B. K. Singh and Mohammad Yousuf Jamal
Quarkonia dissociation at finite magnetic field in the presence of momentum anisotropy
14 pages, 10 figures, 2 tables
null
10.1140/epjc/s10052-024-12525-y
null
hep-ph nucl-th
http://creativecommons.org/licenses/by/4.0/
In this study, we investigate the potential of heavy quarkonia within a magnetized hot QGP medium having finite momentum anisotropy. The phenomenon of inverse magnetic catalysis is introduced into the system, influencing the magnetic field-modified Debye mass and thereby altering the effective quark masses. Concurren...
[ { "created": "Mon, 12 Feb 2024 17:57:13 GMT", "version": "v1" } ]
2024-02-13
[ [ "Nilima", "Indrani", "" ], [ "Hasan", "Mujeeb", "" ], [ "Singh", "B. K.", "" ], [ "Jamal", "Mohammad Yousuf", "" ] ]
In this study, we investigate the potential of heavy quarkonia within a magnetized hot QGP medium having finite momentum anisotropy. The phenomenon of inverse magnetic catalysis is introduced into the system, influencing the magnetic field-modified Debye mass and thereby altering the effective quark masses. Concurrentl...
hep-ph/0607204
David Kaplan
Linda M. Carpenter, David E. Kaplan, Eun-Jung Rhee
Reduced Fine-Tuning in Supersymmetry with R-parity violation
5 pages, 2 figures. Significant detail added to the arguments regarding LEP limits - made more quantitative. Better figures used, plotting more physical quantities. Typos corrected and references updated. Conclusions unchanged
Phys.Rev.Lett.99:211801,2007
10.1103/PhysRevLett.99.211801
null
hep-ph
null
Both electroweak precision measurements and simple supersymmetric extensions of the standard model prefer a mass of the Higgs boson less than the experimental lower limit of 114 GeV. We show that supersymmetric models with R parity violation and baryon number violation have a significant range of parameter space in w...
[ { "created": "Wed, 19 Jul 2006 18:50:52 GMT", "version": "v1" }, { "created": "Thu, 20 Jul 2006 07:16:15 GMT", "version": "v2" }, { "created": "Thu, 25 Jan 2007 17:46:18 GMT", "version": "v3" } ]
2008-11-26
[ [ "Carpenter", "Linda M.", "" ], [ "Kaplan", "David E.", "" ], [ "Rhee", "Eun-Jung", "" ] ]
Both electroweak precision measurements and simple supersymmetric extensions of the standard model prefer a mass of the Higgs boson less than the experimental lower limit of 114 GeV. We show that supersymmetric models with R parity violation and baryon number violation have a significant range of parameter space in whi...
hep-ph/9709488
Santi Peris
S. Peris (UAB)
UV renormalons in QCD and their phenomenological implications
6 pages, LateX, espcrc2; contribution to QCD97, Montpellier, France, July 1997, to appear in the proceedings
Nucl.Phys.Proc.Suppl.64:344-349,1998
10.1016/S0920-5632(97)01086-4
UAB-FT-424/97
hep-ph
null
I report on some recent work done in collaboration with E. de Rafael on the connection between ultraviolet renormalons in QCD and Nambu-Jona-Lasinio-like Lagrangians as its effective description at low energies.
[ { "created": "Mon, 29 Sep 1997 11:16:39 GMT", "version": "v1" } ]
2008-11-26
[ [ "Peris", "S.", "", "UAB" ] ]
I report on some recent work done in collaboration with E. de Rafael on the connection between ultraviolet renormalons in QCD and Nambu-Jona-Lasinio-like Lagrangians as its effective description at low energies.
hep-ph/9307278
null
J. Segura, J. Bernab\'eu, F.J. Botella and J. Pe\~narrocha
Dynamical zeros in neutrino-electron elastic scattering at leading order
9 pg.+ 2 figures (not included available upon request)
Phys.Rev. D49 (1994) 1633-1636
10.1103/PhysRevD.49.1633
null
hep-ph
null
We show the existence of dynamical zeros in the helicity amplitudes for neutrino-electron elastic scattering at lowest order in the standard theory. In particular, the $\lambda=1/2$ non-flip electron helicity amplitude in the electron antineutrino process vanishes for an incident neutrino energy $E_{\nu}=m_{e}/(4sin^...
[ { "created": "Fri, 16 Jul 1993 01:19:42 GMT", "version": "v1" } ]
2016-08-14
[ [ "Segura", "J.", "" ], [ "Bernabéu", "J.", "" ], [ "Botella", "F. J.", "" ], [ "Peñarrocha", "J.", "" ] ]
We show the existence of dynamical zeros in the helicity amplitudes for neutrino-electron elastic scattering at lowest order in the standard theory. In particular, the $\lambda=1/2$ non-flip electron helicity amplitude in the electron antineutrino process vanishes for an incident neutrino energy $E_{\nu}=m_{e}/(4sin^{2...
hep-ph/0601187
Kochelev Nikolai Innokentevich
N.I.Kochelev
Charge Symmetry Breaking in Pion-Nucleon Coupling Constants Induced by Axial Anomaly
4 pages. Contribution to "Sense of Beauty in Physics - a volume in honour of Adriano Di Giacomo" (Pisa University Press, Pisa, 2006), on the occasion of his 70th birthday
null
null
null
hep-ph nucl-ex nucl-th
null
The contribution of axial anomaly to charge symmetry breaking in pion-nucleon coupling constants is calculated within instanton model for QCD vacuum. It has been demonstrated that the contribution is large and allows to explain Nolen-Schiffer anomaly.
[ { "created": "Mon, 23 Jan 2006 06:28:26 GMT", "version": "v1" }, { "created": "Wed, 25 Jan 2006 00:11:15 GMT", "version": "v2" } ]
2007-05-23
[ [ "Kochelev", "N. I.", "" ] ]
The contribution of axial anomaly to charge symmetry breaking in pion-nucleon coupling constants is calculated within instanton model for QCD vacuum. It has been demonstrated that the contribution is large and allows to explain Nolen-Schiffer anomaly.
2306.15872
Sabyasachi Chakraborty
Sabyasachi Chakraborty, Aritra Gupta, Miguel Vanvlasselaer
Anomaly induced cooling of Neutron Stars: A Standard Model contribution
19 pages, Updated section 4.4, matches with the published version of JCAP, updated Fig. 5 with different values of the nucleon-omega coupling
null
null
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
Young neutron stars cool via the emission of neutrinos from their core. A precise understanding of all the different processes producing neutrinos in the hot and degenerate matter is essential for assessing the cooling rate of such stars. The main Standard Model processes contributing to this effect are $\nu$ bremsst...
[ { "created": "Wed, 28 Jun 2023 02:17:58 GMT", "version": "v1" }, { "created": "Wed, 25 Oct 2023 03:40:36 GMT", "version": "v2" }, { "created": "Thu, 21 Mar 2024 07:36:24 GMT", "version": "v3" }, { "created": "Wed, 1 May 2024 12:15:21 GMT", "version": "v4" } ]
2024-05-02
[ [ "Chakraborty", "Sabyasachi", "" ], [ "Gupta", "Aritra", "" ], [ "Vanvlasselaer", "Miguel", "" ] ]
Young neutron stars cool via the emission of neutrinos from their core. A precise understanding of all the different processes producing neutrinos in the hot and degenerate matter is essential for assessing the cooling rate of such stars. The main Standard Model processes contributing to this effect are $\nu$ bremsstra...
hep-ph/0303051
George Sterman
Carola F. Berger, Tibor Kucs, George Sterman (Stony Brook)
Event Shape/Energy Flow Correlations
43 pages, eight eps figures; minor changes, references added
Phys.Rev.D68:014012,2003
10.1103/PhysRevD.68.014012
YITP-SB-03-06
hep-ph
null
We introduce a set of correlations between energy flow and event shapes that are sensitive to the flow of color at short distances in jet events. These correlations are formulated for a general set of event shapes, which includes jet broadening and thrust as special cases. We illustrate the method for electron-positr...
[ { "created": "Thu, 6 Mar 2003 16:06:08 GMT", "version": "v1" }, { "created": "Fri, 7 Mar 2003 13:12:13 GMT", "version": "v2" }, { "created": "Wed, 4 Jun 2003 19:43:04 GMT", "version": "v3" } ]
2014-11-17
[ [ "Berger", "Carola F.", "", "Stony Brook" ], [ "Kucs", "Tibor", "", "Stony Brook" ], [ "Sterman", "George", "", "Stony Brook" ] ]
We introduce a set of correlations between energy flow and event shapes that are sensitive to the flow of color at short distances in jet events. These correlations are formulated for a general set of event shapes, which includes jet broadening and thrust as special cases. We illustrate the method for electron-positron...
hep-ph/0410151
Johan Alwall
Johan Alwall
An improved description of charged Higgs boson production
10 pages, 6 figures. Talk given at the 42nd International School of Subnuclear Physics at Erice, Sicily, 1 September 2004
null
null
null
hep-ph
null
Many extensions of the Standard Model predict the existence of charged Higgs bosons. In order to be able to find those particles, an accurate description of their production is needed. In Monte Carlo simulations of charged Higgs boson production at hadron colliders, the two tree-level processes gb->H+/-t and gg->H+/-...
[ { "created": "Mon, 11 Oct 2004 13:09:24 GMT", "version": "v1" } ]
2007-05-23
[ [ "Alwall", "Johan", "" ] ]
Many extensions of the Standard Model predict the existence of charged Higgs bosons. In order to be able to find those particles, an accurate description of their production is needed. In Monte Carlo simulations of charged Higgs boson production at hadron colliders, the two tree-level processes gb->H+/-t and gg->H+/-tb...
0910.3108
Nikolaos Stefanis
N. G. Stefanis, I. O. Cherednikov
Renormalization-group anatomy of transverse-momentum dependent parton distribution functions in QCD
10 pages, 3 figures; needs ws-mpla-hep.cls (supplied). Talk presented by the first author at Workshop on "Recent Advances in Perturbative QCD and Hadronic Physics", 20--25 July 2009, ECT*, Trento, Italy, in Honor of Prof. Anatoly Efremov's 75th birthday
Mod.Phys.Lett.A24:2913-2923,2009
10.1142/S0217732309001121
RUB-TPII-11/09
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The ultraviolet and rapidity divergences of transverse-momentum dependent parton distribution functions with lightlike and transverse gauge links is studied, also incorporating a soft eikonal factor. We find that in the light-cone gauge with $q^-$-independent pole prescriptions extra divergences appear which amount, ...
[ { "created": "Fri, 16 Oct 2009 13:15:57 GMT", "version": "v1" } ]
2010-02-05
[ [ "Stefanis", "N. G.", "" ], [ "Cherednikov", "I. O.", "" ] ]
The ultraviolet and rapidity divergences of transverse-momentum dependent parton distribution functions with lightlike and transverse gauge links is studied, also incorporating a soft eikonal factor. We find that in the light-cone gauge with $q^-$-independent pole prescriptions extra divergences appear which amount, at...
0804.3777
Pena Francisco
Norman Cruz, Samuel Lepe and Francisco Pena
Dark energy interacting with two fluids
null
Phys.Lett.B663:338-341,2008
10.1016/j.physletb.2008.04.035
null
hep-ph astro-ph gr-qc
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A cosmological model of dark energy interacting with dark matter and another general component of the universe is investigated. We found general constraints on these models imposing an accelerated expansion. The same is also studied in the case for holographic dark energy.
[ { "created": "Wed, 23 Apr 2008 18:46:12 GMT", "version": "v1" } ]
2008-11-26
[ [ "Cruz", "Norman", "" ], [ "Lepe", "Samuel", "" ], [ "Pena", "Francisco", "" ] ]
A cosmological model of dark energy interacting with dark matter and another general component of the universe is investigated. We found general constraints on these models imposing an accelerated expansion. The same is also studied in the case for holographic dark energy.
hep-ph/9803214
Jos\i Antonio Oller
J.A. Oller
The phi --> gamma K0 bar(K0) Decay
6 pages, 2 figures, LaTeX
Phys.Lett.B426:7-11,1998
10.1016/S0370-2693(98)00298-6
null
hep-ph
null
The study of the process phi-->gamma K0 bar(K0) is calculated to be 5.10^(-8) in a scheme which takes into account the different isospin channels involved, I=0,1 with the resonant, f_0(980), a_0(980), and non resonant contributions.
[ { "created": "Mon, 2 Mar 1998 12:34:43 GMT", "version": "v1" } ]
2008-11-26
[ [ "Oller", "J. A.", "" ] ]
The study of the process phi-->gamma K0 bar(K0) is calculated to be 5.10^(-8) in a scheme which takes into account the different isospin channels involved, I=0,1 with the resonant, f_0(980), a_0(980), and non resonant contributions.
hep-ph/9402279
Mariusz Sadzikowski
H. Hogaasen and M. Sadzikowski
Isgur - Wise Functions for Confined Light Quarks in a Colour Electric Potential
9 pages, 1 figure (available upon request), Latex, TPJU - 4/94
Z.Phys. C64 (1994) 427-430
10.1007/BF01560103
null
hep-ph
null
We explore the influence on the Isgur-Wise function of the colour electric potential between heavy and light quarks in mesons. It is shown that in bag models, its inclusion tends to restore light quark flavour symmetry relative to the MIT bag predictions, and that relative to this model it flattens the Isgur-Wise fun...
[ { "created": "Mon, 14 Feb 1994 17:02:42 GMT", "version": "v1" } ]
2009-10-28
[ [ "Hogaasen", "H.", "" ], [ "Sadzikowski", "M.", "" ] ]
We explore the influence on the Isgur-Wise function of the colour electric potential between heavy and light quarks in mesons. It is shown that in bag models, its inclusion tends to restore light quark flavour symmetry relative to the MIT bag predictions, and that relative to this model it flattens the Isgur-Wise funct...
hep-ph/9606233
John Terning
R.S. Chivukula and J. Terning
Precision Electroweak Constraints on Top-Color Assisted Technicolor
14 pages, LaTeX, 3 embedded figures, figures are also available at http://smyrd.bu.edu/htfigs/htfigs.html
Phys.Lett.B385:209-217,1996
10.1016/0370-2693(96)00833-7
BUHEP-96-12
hep-ph
null
Using precision electroweak data, we put limits on ``natural'' top-color assisted technicolor models. Generically the new $U(1)$ gauge bosons in these models must have masses larger than roughly 2 TeV, although in certain (seemingly unrealistic) models the bound can be much lower.
[ { "created": "Tue, 4 Jun 1996 22:12:36 GMT", "version": "v1" } ]
2011-01-13
[ [ "Chivukula", "R. S.", "" ], [ "Terning", "J.", "" ] ]
Using precision electroweak data, we put limits on ``natural'' top-color assisted technicolor models. Generically the new $U(1)$ gauge bosons in these models must have masses larger than roughly 2 TeV, although in certain (seemingly unrealistic) models the bound can be much lower.
hep-ph/9712418
Roberto Pittau
Roberto Pittau (CERN)
A simple method for multi-leg loop calculations 2: a general algorithm
7 pages, latex, no figures
Comput.Phys.Commun. 111 (1998) 48-52
10.1016/S0010-4655(98)00040-X
CERN-TH/97-372
hep-ph
null
The method introduced in a previous paper to simplify the tensorial reduction in multi-leg loop calculations is extended to generic one-loop integrals, with arbitrary internal masses and external momenta.
[ { "created": "Wed, 17 Dec 1997 13:50:44 GMT", "version": "v1" } ]
2009-10-30
[ [ "Pittau", "Roberto", "", "CERN" ] ]
The method introduced in a previous paper to simplify the tensorial reduction in multi-leg loop calculations is extended to generic one-loop integrals, with arbitrary internal masses and external momenta.
0912.0190
Antoni Szczurek
Piotr Lebiedowicz and Antoni Szczurek
Exclusive $pp \to pp \pi^{+}\pi^{-}$ reaction: from the threshold to LHC
19 pages, 18 figures
Phys.Rev.D81:036003,2010
10.1103/PhysRevD.81.036003
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We evaluate differential distributions for the four-body $p p \to p p \pi^+ \pi^-$ reaction which constitutes a irreducible background to three-body processes $p p \to p p M$, where $M$ are a broad resonances in the $\pi^+ \pi^-$ channel, e.g. $M=\sigma, \rho^{0}, f_{0}(980), f_{2}(1275), f_{0}(1500)$. We include bot...
[ { "created": "Tue, 1 Dec 2009 15:56:48 GMT", "version": "v1" } ]
2010-05-07
[ [ "Lebiedowicz", "Piotr", "" ], [ "Szczurek", "Antoni", "" ] ]
We evaluate differential distributions for the four-body $p p \to p p \pi^+ \pi^-$ reaction which constitutes a irreducible background to three-body processes $p p \to p p M$, where $M$ are a broad resonances in the $\pi^+ \pi^-$ channel, e.g. $M=\sigma, \rho^{0}, f_{0}(980), f_{2}(1275), f_{0}(1500)$. We include both ...
2103.12003
Andreas Crivellin
Andreas Crivellin, Claudio Andrea Manzari, Marc Montull
Correlating Non-Resonant Di-Electron Searches at the LHC to the Cabibbo-Angle Anomaly and Lepton Flavour Universality Violation
6 pages, 2 figures
null
10.1103/PhysRevD.104.115016
CERN-TH-2021-036, PSI-PR-21-03, ZU-TH 11/21
hep-ph hep-ex hep-th nucl-ex nucl-th
http://creativecommons.org/licenses/by/4.0/
In addition to the existing strong indications for lepton flavour university violation (LFUV) in low energy precision experiments, CMS recently released an analysis of non-resonant di-lepton pairs which could constitute the first sign of LFUV in high-energy LHC searches. In this article we show that the Cabibbo angle...
[ { "created": "Mon, 22 Mar 2021 16:54:02 GMT", "version": "v1" } ]
2022-01-05
[ [ "Crivellin", "Andreas", "" ], [ "Manzari", "Claudio Andrea", "" ], [ "Montull", "Marc", "" ] ]
In addition to the existing strong indications for lepton flavour university violation (LFUV) in low energy precision experiments, CMS recently released an analysis of non-resonant di-lepton pairs which could constitute the first sign of LFUV in high-energy LHC searches. In this article we show that the Cabibbo angle a...
2306.14885
Thomas Cridge
Thomas Cridge and Matthew A. Lim
Constraining the top-quark mass within the global MSHT PDF fit
35 pages, 13 figures, 3 tables
Eur.Phys.J.C 83 (2023) 9, 805
10.1140/epjc/s10052-023-11961-6
DESY-23-087
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We examine the ability of experimental measurements of top-quark pair production to constrain both the top-quark mass and the strong coupling within the global MSHT parton distribution function (PDF) fit. Specifically, we consider ATLAS and CMS measurements of differential distributions taken at a centre-of-mass ener...
[ { "created": "Mon, 26 Jun 2023 17:53:11 GMT", "version": "v1" }, { "created": "Wed, 13 Sep 2023 10:07:22 GMT", "version": "v2" } ]
2023-09-14
[ [ "Cridge", "Thomas", "" ], [ "Lim", "Matthew A.", "" ] ]
We examine the ability of experimental measurements of top-quark pair production to constrain both the top-quark mass and the strong coupling within the global MSHT parton distribution function (PDF) fit. Specifically, we consider ATLAS and CMS measurements of differential distributions taken at a centre-of-mass energy...
hep-ph/0403237
Alejandro Gutierrez
A. Guti\'errez-Rodr\'iguez, M. A. Hern\'andez-Ru\'iz and L.N. Luis-Noriega (Zacatecas University, Mexico)
Limits on the Dipole Moments of the $\tau$-Lepton via the Process $e^{+}e^{-}\to \tau^+ \tau^- \gamma in a Left-Right Symmetric Model
15 pages, 3 figures
Mod.Phys.Lett. A19 (2004) 2227
10.1142/S0217732304014689
null
hep-ph
null
Limits on the anomalous magnetic moment and the electric dipole moment of the $\tau$ lepton are calculated through the reaction $e^{+}e^{-}\to \tau^+ \tau^- \gamma$ at the $Z_1$-pole and in the framework of a left-right symmetric model. The results are based on the recent data reported by the L3 Collaboration at CERN...
[ { "created": "Mon, 22 Mar 2004 14:47:00 GMT", "version": "v1" }, { "created": "Wed, 24 Mar 2004 18:03:18 GMT", "version": "v2" } ]
2009-11-10
[ [ "Gutiérrez-Rodríguez", "A.", "", "Zacatecas University, Mexico" ], [ "Hernández-Ruíz", "M. A.", "", "Zacatecas University, Mexico" ], [ "Luis-Noriega", "L. N.", "", "Zacatecas University, Mexico" ] ]
Limits on the anomalous magnetic moment and the electric dipole moment of the $\tau$ lepton are calculated through the reaction $e^{+}e^{-}\to \tau^+ \tau^- \gamma$ at the $Z_1$-pole and in the framework of a left-right symmetric model. The results are based on the recent data reported by the L3 Collaboration at CERN L...
hep-ph/0111149
Michael A. Doncheski
M. A. Doncheski
ADD extra dimensional gravity and di-jet production at hadron colliders
3 pages, 2 figures, RevTeX 4.0, contributed to APS/DPF/DPB Summer Study on the Future of Particle Physics (Snowmass 2001), Snowmass, Colorado, June 30 to July 21, 2001
eConf C010630 (2001) P314
null
null
hep-ph
null
We re-analyze dijet production at hadron colliders (the Tevatron at Fermilab and the Large Hadron Collider, LHC, at CERN), to determine the potential limits on Planck mass in ADD type extra dimensional gravity scenarios. We try a variety of experimental observables in order to maximize the exclusion limits; we find t...
[ { "created": "Mon, 12 Nov 2001 19:45:18 GMT", "version": "v1" } ]
2007-05-23
[ [ "Doncheski", "M. A.", "" ] ]
We re-analyze dijet production at hadron colliders (the Tevatron at Fermilab and the Large Hadron Collider, LHC, at CERN), to determine the potential limits on Planck mass in ADD type extra dimensional gravity scenarios. We try a variety of experimental observables in order to maximize the exclusion limits; we find tha...
1709.07440
Wayne W. Repko
Wayne W. Repko and Duane A. Dicus
Muonic hydrogen and the proton size
18 pages, 2 Tables, content added
Phys. Rev. D 98, 013002 (2018)
10.1103/PhysRevD.98.013002
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We reexamine the structure of the $n=2$ levels of muonic hydrogen using a two-body potential that includes all relativistic, recoil and one loop corrections. The potential was originally derived from QED to describe the muonium atom and accounts for all contributions to order $\alpha^5$. Since one loop corrections ar...
[ { "created": "Thu, 21 Sep 2017 17:59:03 GMT", "version": "v1" }, { "created": "Thu, 2 Nov 2017 15:11:38 GMT", "version": "v2" }, { "created": "Thu, 21 Jun 2018 18:55:00 GMT", "version": "v3" } ]
2018-07-11
[ [ "Repko", "Wayne W.", "" ], [ "Dicus", "Duane A.", "" ] ]
We reexamine the structure of the $n=2$ levels of muonic hydrogen using a two-body potential that includes all relativistic, recoil and one loop corrections. The potential was originally derived from QED to describe the muonium atom and accounts for all contributions to order $\alpha^5$. Since one loop corrections are ...
hep-ph/9512294
Herbert Weigel
L. Gamberg, H. Weigel, U. Z\"uckert and H. Reinhardt
Heavy Quark Solitons in the Nambu--Jona-Lasinio Model
16 pages REVTEX, one postscript figure, to appear in Phys. Rev. D
Phys.Rev. D54 (1996) 5812-5819
10.1103/PhysRevD.54.5812
UNITU-THEP-18/1995
hep-ph
null
The Nambu--Jona-Lasinio model (NJL) is extended to incorporate heavy quark spin-symmetry. In this model baryons containing one heavy quark are analyzed as bound-states of light baryons, represented as chiral solitons, and mesons containing one heavy quark. From related studies in Skyrme type models, the ground-state ...
[ { "created": "Wed, 13 Dec 1995 09:56:25 GMT", "version": "v1" }, { "created": "Fri, 16 Aug 1996 16:08:58 GMT", "version": "v2" } ]
2016-08-15
[ [ "Gamberg", "L.", "" ], [ "Weigel", "H.", "" ], [ "Zückert", "U.", "" ], [ "Reinhardt", "H.", "" ] ]
The Nambu--Jona-Lasinio model (NJL) is extended to incorporate heavy quark spin-symmetry. In this model baryons containing one heavy quark are analyzed as bound-states of light baryons, represented as chiral solitons, and mesons containing one heavy quark. From related studies in Skyrme type models, the ground-state he...
hep-ph/0405166
Alexandre Kisselev
A.V. Kisselev and V.A. Petrov (IHEP, Protvino)
Eikonal Amplitude in the Gravireggeon Model at Superplanckian Energies
21 pages, LaTeX2e, no figures
Eur.Phys.J. C37 (2004) 241-249
10.1140/epjc/s2004-01985-y
null
hep-ph
null
The gravity effects in high-energy scattering, described by a four-dimensional eikonal amplitude related to gravireggeons induced by compact extra dimensions are studied. It is demonstrated that the real part of the eikonal (with a massless mode subtracted) dominates its imaginary part at both small and large impact ...
[ { "created": "Tue, 18 May 2004 12:05:18 GMT", "version": "v1" } ]
2009-11-10
[ [ "Kisselev", "A. V.", "", "IHEP, Protvino" ], [ "Petrov", "V. A.", "", "IHEP, Protvino" ] ]
The gravity effects in high-energy scattering, described by a four-dimensional eikonal amplitude related to gravireggeons induced by compact extra dimensions are studied. It is demonstrated that the real part of the eikonal (with a massless mode subtracted) dominates its imaginary part at both small and large impact pa...
hep-ph/9307336
Chengqian Gong
C. Greiner, C. Gong and B. M\"uller
Some remarks on pion condensation in relativistic heavy ion collisions
9pp, DUKE-TH-93-53
Phys.Lett.B316:226-230,1993
10.1016/0370-2693(93)90317-B
null
hep-ph
null
Recently it was pointed out that coherent or condensated states of pions may account for the explanation of the Centauro events observed in cosmic ray showers. We argue that an occurrence of condensed pions requires that the system evolves far out of thermal equilibrium. Besides an unusual charge ratio distribution w...
[ { "created": "Mon, 26 Jul 1993 17:21:30 GMT", "version": "v1" }, { "created": "Wed, 28 Jul 1993 16:49:31 GMT", "version": "v2" } ]
2008-11-26
[ [ "Greiner", "C.", "" ], [ "Gong", "C.", "" ], [ "Müller", "B.", "" ] ]
Recently it was pointed out that coherent or condensated states of pions may account for the explanation of the Centauro events observed in cosmic ray showers. We argue that an occurrence of condensed pions requires that the system evolves far out of thermal equilibrium. Besides an unusual charge ratio distribution we ...
1309.5785
George Leontaris
G.K. Leontaris, N.D. Vlachos
A discrete anatomy of the neutrino mass matrix
12 pages, 2 figures, minor misprints corrected, references added
null
10.1142/S021773231450179X
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the possibility of expressing the charged leptons and neutrino mass matrices as linear combinations of generators of a single finite group. Constraints imposed on the resulting mixing matrix by current data restrict the group types, but allow a non zero value for the theta_13 mixing angle
[ { "created": "Mon, 23 Sep 2013 12:37:50 GMT", "version": "v1" }, { "created": "Thu, 15 May 2014 14:56:03 GMT", "version": "v2" } ]
2015-06-17
[ [ "Leontaris", "G. K.", "" ], [ "Vlachos", "N. D.", "" ] ]
We investigate the possibility of expressing the charged leptons and neutrino mass matrices as linear combinations of generators of a single finite group. Constraints imposed on the resulting mixing matrix by current data restrict the group types, but allow a non zero value for the theta_13 mixing angle