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1804.06824
Daniel Hulme
Sophia Borowka, Thomas Gehrmann, Daniel Hulme
Systematic approximation of multi-scale Feynman integrals
31 pages + refs , 34 figures. v2 reflects the version published in JHEP. The case of integrals with multiple thresholds has been added, with new plots and text
null
10.1007/JHEP08(2018)111
CERN-TH-2018-078, ZU-TH 14/18
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
An algorithm for the systematic analytical approximation of multi-scale Feynman integrals is presented. The algorithm produces algebraic expressions as functions of the kinematical parameters and mass scales appearing in the Feynman integrals, allowing for fast numerical evaluation. The results are valid in all kinem...
[ { "created": "Wed, 18 Apr 2018 17:22:36 GMT", "version": "v1" }, { "created": "Fri, 7 Sep 2018 08:43:29 GMT", "version": "v2" } ]
2018-09-26
[ [ "Borowka", "Sophia", "" ], [ "Gehrmann", "Thomas", "" ], [ "Hulme", "Daniel", "" ] ]
An algorithm for the systematic analytical approximation of multi-scale Feynman integrals is presented. The algorithm produces algebraic expressions as functions of the kinematical parameters and mass scales appearing in the Feynman integrals, allowing for fast numerical evaluation. The results are valid in all kinemat...
1112.5497
Jeonghyeon Song
Sanghyeon Chang, Kang Young Lee, and Jeonghyeon Song (Konkuk Univ., Korea)
Probing axino LSP from diphotons events with large missing transverse energy
to be appeared in Phys. Lett. B. 10 pages with 2 figure
null
10.1016/j.physletb.2012.09.009
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In a supersymmetry model with an axino as the lightest supersymmetric particle (LSP) and a Bino as the next LSP (NLSP), supersymmetry particles produced in pair at a high energy collider end up with including two Binos, followed by each Bino's decay into a photon and an axino. Final states are diphoton with large mis...
[ { "created": "Fri, 23 Dec 2011 01:04:35 GMT", "version": "v1" }, { "created": "Mon, 16 Jul 2012 08:46:22 GMT", "version": "v2" } ]
2015-06-03
[ [ "Chang", "Sanghyeon", "", "Konkuk Univ.,\n Korea" ], [ "Lee", "Kang Young", "", "Konkuk Univ.,\n Korea" ], [ "Song", "Jeonghyeon", "", "Konkuk Univ.,\n Korea" ] ]
In a supersymmetry model with an axino as the lightest supersymmetric particle (LSP) and a Bino as the next LSP (NLSP), supersymmetry particles produced in pair at a high energy collider end up with including two Binos, followed by each Bino's decay into a photon and an axino. Final states are diphoton with large missi...
1012.4687
Robi Peschanski
Andrzej Bialas (Krakow) and Robi Peschanski (Saclay)
Asymmetric 1+1-dimensional hydrodynamics in collision
10 pages, 4 (double) figures
Phys.Rev.C83:054905,2011
10.1103/PhysRevC.83.054905
null
hep-ph hep-th nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The possibility that particle production in high-energy collisions is a result of two asymmetric hydrodynamic flows is investigated, using the Khalatnikov form of the 1+1-dimensional approximation of hydrodynamic equations. The general solution is discussed and applied to the physically appealing "generalized in-out ...
[ { "created": "Tue, 21 Dec 2010 15:14:48 GMT", "version": "v1" } ]
2011-05-19
[ [ "Bialas", "Andrzej", "", "Krakow" ], [ "Peschanski", "Robi", "", "Saclay" ] ]
The possibility that particle production in high-energy collisions is a result of two asymmetric hydrodynamic flows is investigated, using the Khalatnikov form of the 1+1-dimensional approximation of hydrodynamic equations. The general solution is discussed and applied to the physically appealing "generalized in-out ca...
hep-ph/9404328
Dam Than Son
V.A.Rubakov and O.Yu.Shvedov
Sphalerons and Large Order Behavior of Perturbation Theory in Lower Dimension
23 pages, 9 figures, LaTeX, preprint INR-850/94
Nucl.Phys. B434 (1995) 245-263
10.1016/0550-3213(94)00447-M
null
hep-ph
null
Sphalerons -- unstable static solutions of classical field equations in (d+1)-dimensional space-time -- may be viewed as euclidean solutions in d dimensions. We discuss their role in the large order asymptotics of the perturbation theory. Specifically, we calculate their contribution to the large order behaviour of t...
[ { "created": "Fri, 22 Apr 1994 15:47:32 GMT", "version": "v1" }, { "created": "Mon, 25 Apr 1994 07:44:49 GMT", "version": "v2" } ]
2009-10-28
[ [ "Rubakov", "V. A.", "" ], [ "Shvedov", "O. Yu.", "" ] ]
Sphalerons -- unstable static solutions of classical field equations in (d+1)-dimensional space-time -- may be viewed as euclidean solutions in d dimensions. We discuss their role in the large order asymptotics of the perturbation theory. Specifically, we calculate their contribution to the large order behaviour of the...
1702.07220
Luis Roca
L. Roca, E. Oset
Role of a triangle singularity in the $\pi \Delta$ decay of the $N(1700)(3/2^-)$
8 pages, 6 figures
Phys. Rev. C 95, 065211 (2017)
10.1103/PhysRevC.95.065211
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We show the important role played by the $\pi\Delta(1232)$ channel in the build up of the $N(1700)(3/2^-)$ resonance due to the non-trivial enhancement produced by a singularity of a triangular loop. The $N(1700)$ is one of the dynamically generated resonances produced by the coupled channel vector-baryon interaction...
[ { "created": "Thu, 23 Feb 2017 14:05:32 GMT", "version": "v1" } ]
2017-06-28
[ [ "Roca", "L.", "" ], [ "Oset", "E.", "" ] ]
We show the important role played by the $\pi\Delta(1232)$ channel in the build up of the $N(1700)(3/2^-)$ resonance due to the non-trivial enhancement produced by a singularity of a triangular loop. The $N(1700)$ is one of the dynamically generated resonances produced by the coupled channel vector-baryon interaction. ...
hep-ph/9911369
Alexey A. Petrov
Adam F. Falk, Yosef Nir, and Alexey A. Petrov
Strong phases and D0-anti-D0 mixing parameters
9 pages, 1 figure, RevTeX; discussion clarified, qualitative and quantitative conclusions unchanged, version to appear in JHEP
JHEP 9912 (1999) 019
10.1088/1126-6708/1999/12/019
JHU-TIPAC-99010, IASSNS-HEP-99-104
hep-ph hep-ex
null
We argue that there could be large, SU(3) violating resonance contributions to D -> K pi decays which would affect the extraction of the D0-anti-D0 mixing parameters from experiment. Such contributions can induce a large strong phase in the interference between the doubly Cabibbo suppressed and the mixing induced Cab...
[ { "created": "Mon, 15 Nov 1999 23:21:33 GMT", "version": "v1" }, { "created": "Mon, 20 Dec 1999 17:06:17 GMT", "version": "v2" } ]
2009-10-31
[ [ "Falk", "Adam F.", "" ], [ "Nir", "Yosef", "" ], [ "Petrov", "Alexey A.", "" ] ]
We argue that there could be large, SU(3) violating resonance contributions to D -> K pi decays which would affect the extraction of the D0-anti-D0 mixing parameters from experiment. Such contributions can induce a large strong phase in the interference between the doubly Cabibbo suppressed and the mixing induced Cabib...
hep-ph/9902283
Smaragda Lola
Smaragda Lola (CERN) and Graham G. Ross (Oxford U.)
Neutrino masses from U(1) symmetries and the Super-Kamiokande data
30 pages, 2 figures
Nucl.Phys. B553 (1999) 81-107
10.1016/S0550-3213(99)00150-9
CERN-TH/99-27, OUTP-99-11-P
hep-ph
null
Motivated by the Super-Kamiokande data, we revisit models with U(1) symmetries and discuss the origin of neutrino masses and mixings in such theories. We show that, in models with just three light neutrinos and a hierarchy of neutrino masses, large (2-3) mixing fixes the lepton doublet U(1) charges and is thus relate...
[ { "created": "Tue, 9 Feb 1999 17:22:00 GMT", "version": "v1" } ]
2009-10-31
[ [ "Lola", "Smaragda", "", "CERN" ], [ "Ross", "Graham G.", "", "Oxford U." ] ]
Motivated by the Super-Kamiokande data, we revisit models with U(1) symmetries and discuss the origin of neutrino masses and mixings in such theories. We show that, in models with just three light neutrinos and a hierarchy of neutrino masses, large (2-3) mixing fixes the lepton doublet U(1) charges and is thus related ...
1003.0196
Sergey Ostapchenko
Sergey Ostapchenko
Total and diffractive cross sections in enhanced Pomeron scheme
null
Phys.Rev.D81:114028,2010
10.1103/PhysRevD.81.114028
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
For the first time, a systematic analysis of the high energy behavior of total and diffractive proton-proton cross sections is performed within the Reggeon Field Theory framework, based on the resummation of all significant contributions of enhanced Pomeron diagrams to all orders with respect to the triple-Pomeron co...
[ { "created": "Mon, 1 Mar 2010 16:22:29 GMT", "version": "v1" } ]
2014-11-20
[ [ "Ostapchenko", "Sergey", "" ] ]
For the first time, a systematic analysis of the high energy behavior of total and diffractive proton-proton cross sections is performed within the Reggeon Field Theory framework, based on the resummation of all significant contributions of enhanced Pomeron diagrams to all orders with respect to the triple-Pomeron coup...
hep-ph/9503349
Klaus Kinder-Geiger
John Ellis and Klaus Geiger
REAL-TIME DESCRIPTION OF PARTON-HADRON CONVERSION AND CONFINEMENT DYNAMICS
51 pages, latex, 14 figures as uu-encoded postscript file.
Phys.Rev.D52:1500-1526,1995
10.1103/PhysRevD.52.1500
CERN-TH. 35-95
hep-ph nucl-th
null
We propose a new and universal approach to the hadronization problem that incorporates both partonic and hadronic degrees of freedom in their respective domains of relevance, and that describes the conversion between them within a kinetic field theory formulation in real time and full 7-dimensional phase space. We co...
[ { "created": "Thu, 16 Mar 1995 15:25:14 GMT", "version": "v1" } ]
2016-09-01
[ [ "Ellis", "John", "" ], [ "Geiger", "Klaus", "" ] ]
We propose a new and universal approach to the hadronization problem that incorporates both partonic and hadronic degrees of freedom in their respective domains of relevance, and that describes the conversion between them within a kinetic field theory formulation in real time and full 7-dimensional phase space. We cons...
1510.03654
Maxim Mai
Maxim Mai
Constraints on the chiral unitary $\bar KN$ amplitude from ${\pi}{\Sigma}K^+$ photoproduction data
8 pages, to appear in PoS of Chiral Dynamics, Pisa, Italy, 2015
null
null
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A chiral unitary approach for antikaon-nucleon scattering in on-shell factorization is studied. We find multiple sets of parameters for which the model describes all existing hadronic data similarly well. We confirm the two-pole structure of the ${\Lambda}(1405)$. The narrow ${\Lambda}(1405)$ pole appears at comparab...
[ { "created": "Tue, 13 Oct 2015 13:03:47 GMT", "version": "v1" } ]
2015-10-14
[ [ "Mai", "Maxim", "" ] ]
A chiral unitary approach for antikaon-nucleon scattering in on-shell factorization is studied. We find multiple sets of parameters for which the model describes all existing hadronic data similarly well. We confirm the two-pole structure of the ${\Lambda}(1405)$. The narrow ${\Lambda}(1405)$ pole appears at comparable...
1004.4187
Geraldine Servant
Jose R. Espinosa, Thomas Konstandin, Jose M. No and Geraldine Servant
Energy Budget of Cosmological First-order Phase Transitions
36 pages, 14 figures
JCAP 1006:028,2010
10.1088/1475-7516/2010/06/028
CERN-PH-TH/2010-027
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The study of the hydrodynamics of bubble growth in first-order phase transitions is very relevant for electroweak baryogenesis, as the baryon asymmetry depends sensitively on the bubble wall velocity, and also for predicting the size of the gravity wave signal resulting from bubble collisions, which depends on both t...
[ { "created": "Fri, 23 Apr 2010 17:30:24 GMT", "version": "v1" } ]
2014-11-20
[ [ "Espinosa", "Jose R.", "" ], [ "Konstandin", "Thomas", "" ], [ "No", "Jose M.", "" ], [ "Servant", "Geraldine", "" ] ]
The study of the hydrodynamics of bubble growth in first-order phase transitions is very relevant for electroweak baryogenesis, as the baryon asymmetry depends sensitively on the bubble wall velocity, and also for predicting the size of the gravity wave signal resulting from bubble collisions, which depends on both the...
0710.3125
Sukanta Panda
Sukanta Panda and Sergei I. Sinegovsky
High-energy Atmospheric Muon Flux Expected at India-Based Neutrino Observatory
10 pages. 8 figures, 3 tables
Int.J.Mod.Phys.A23:2933-2942,2008
10.1142/S0217751X08041268
null
hep-ph
null
We calculate the zenith-angle dependence of conventional and prompt high-energy muon fluxes at India-Based Neutrino Observatory (INO) depth. This study demonstrates a possibility to discriminate models of the charm hadroproduction including the low-x QCD behaviour of hadronic cross-sections relevant at very high ener...
[ { "created": "Tue, 16 Oct 2007 16:55:56 GMT", "version": "v1" }, { "created": "Mon, 4 Feb 2008 13:44:52 GMT", "version": "v2" } ]
2008-11-26
[ [ "Panda", "Sukanta", "" ], [ "Sinegovsky", "Sergei I.", "" ] ]
We calculate the zenith-angle dependence of conventional and prompt high-energy muon fluxes at India-Based Neutrino Observatory (INO) depth. This study demonstrates a possibility to discriminate models of the charm hadroproduction including the low-x QCD behaviour of hadronic cross-sections relevant at very high energi...
2310.03909
Manoranjan Dutta
Manoranjan Dutta (North Lakhimpur College (Autonomous))
Self-interacting Dark Matter in Non-Standard Cosmology
11 pages, 11 figures
null
null
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
Discrepancies of the $\Lambda {\rm CDM}$ model with small-scale cosmological observations and stringent constraints from direct search experiments cast doubts over typical weak scale cold dark matter candidates e.g. WIMPs. Self-interacting dark matter (SIDM) is a very promising alternative to WIMP, which not only all...
[ { "created": "Thu, 5 Oct 2023 21:29:51 GMT", "version": "v1" } ]
2023-10-09
[ [ "Dutta", "Manoranjan", "", "North Lakhimpur College" ] ]
Discrepancies of the $\Lambda {\rm CDM}$ model with small-scale cosmological observations and stringent constraints from direct search experiments cast doubts over typical weak scale cold dark matter candidates e.g. WIMPs. Self-interacting dark matter (SIDM) is a very promising alternative to WIMP, which not only allev...
1305.5152
Chong Sheng Li
Yong Chuan Zhan, Ze Long Liu, Shi Ang Li, Chong Sheng Li, Hai Tao Li
Threshold resummation for the production of a color sextet (antitriplet) scalar at the LHC
21 pages,9 figures,3 tables; Version published in EPJC
Eur. Phys. J. C (2014) 74:2716
10.1140/epjc/s10052-014-2716-7
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate threshold resummation effects in the production of a color sextet (antitriplet) scalar at next-to-next-to-leading logarithmic (NNLL) order at the LHC in the frame of soft-collinear effective theory. We show the total cross section and the rapidity distribution with NLO+NNLL accuracy, and we compare the...
[ { "created": "Wed, 22 May 2013 14:38:01 GMT", "version": "v1" }, { "created": "Mon, 3 Mar 2014 09:30:34 GMT", "version": "v2" } ]
2014-03-04
[ [ "Zhan", "Yong Chuan", "" ], [ "Liu", "Ze Long", "" ], [ "Li", "Shi Ang", "" ], [ "Li", "Chong Sheng", "" ], [ "Li", "Hai Tao", "" ] ]
We investigate threshold resummation effects in the production of a color sextet (antitriplet) scalar at next-to-next-to-leading logarithmic (NNLL) order at the LHC in the frame of soft-collinear effective theory. We show the total cross section and the rapidity distribution with NLO+NNLL accuracy, and we compare them ...
hep-ph/9602427
Frank Witte
F.M.C. Witte
Symmetry Breaking and Collisions with $\sigma$-Mesons
7 pages, LaTeX, three figures available in Postscript from the Author at witte@hybrid.tphys.uni-heidelberg.de
null
null
null
hep-ph
null
In this brief report we adress spontaneous symmetry breaking in a finite-temperature scalar meson plasma. We calculate the in-medium averaged thermal $\sigma-\sigma$ scattering crossection and the related shear viscosity $\eta(T)$ and mean-free-path $L(T)$. Our results suggest that slightly below the critical tempera...
[ { "created": "Thu, 29 Feb 1996 08:13:09 GMT", "version": "v1" } ]
2007-05-23
[ [ "Witte", "F. M. C.", "" ] ]
In this brief report we adress spontaneous symmetry breaking in a finite-temperature scalar meson plasma. We calculate the in-medium averaged thermal $\sigma-\sigma$ scattering crossection and the related shear viscosity $\eta(T)$ and mean-free-path $L(T)$. Our results suggest that slightly below the critical temperatu...
hep-ph/9802388
null
Z. Chacko and R. N. Mohapatra
Supersymmetric $SU(2)_L\times SU(2)_R \times SU(4)_c$ and observable neutron-antineutron oscillation
4 pages; one figure; Preprint No. UMD-PP-98-94
Phys.Rev. D59 (1999) 055004
10.1103/PhysRevD.59.055004
null
hep-ph
null
We show that in a large class of supersymmetric $SU(2)_L\times SU(2)_R\times SU(4)_c$ models with the see-saw mechanism for neutrino masses and an R-parity conserving vacuum, there are diquark Higgs bosons with masses ($M_{qq}$) near the weak scale even though the scale of $SU(2)_R\times SU(4)_c$ symmetry breaking is...
[ { "created": "Sat, 21 Feb 1998 16:46:11 GMT", "version": "v1" } ]
2009-10-31
[ [ "Chacko", "Z.", "" ], [ "Mohapatra", "R. N.", "" ] ]
We show that in a large class of supersymmetric $SU(2)_L\times SU(2)_R\times SU(4)_c$ models with the see-saw mechanism for neutrino masses and an R-parity conserving vacuum, there are diquark Higgs bosons with masses ($M_{qq}$) near the weak scale even though the scale of $SU(2)_R\times SU(4)_c$ symmetry breaking is a...
1305.2850
Luca Di Luzio
Luca Di Luzio and Luminita Mihaila
Unification scale vs. electroweak-triplet mass in the SU(5) + 24_F model at three loops
16 pages, 7 figures. One reference added. To appear in Phys. Rev. D
null
10.1103/PhysRevD.87.115025
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
It was shown recently that the original SU(5) theory of Georgi and Glashow, augmented with an adjoint fermionic multiplet 24_F, can be made compatible both with neutrino masses and gauge coupling unification. In particular, the model predicts that either electroweak-triplet states are light, within the reach of the L...
[ { "created": "Mon, 13 May 2013 17:15:17 GMT", "version": "v1" }, { "created": "Fri, 21 Jun 2013 08:49:06 GMT", "version": "v2" } ]
2013-08-09
[ [ "Di Luzio", "Luca", "" ], [ "Mihaila", "Luminita", "" ] ]
It was shown recently that the original SU(5) theory of Georgi and Glashow, augmented with an adjoint fermionic multiplet 24_F, can be made compatible both with neutrino masses and gauge coupling unification. In particular, the model predicts that either electroweak-triplet states are light, within the reach of the Lar...
1809.04974
Francesco Giacosa
Francesco Giacosa
Chiral anomaly and strange-nonstrange mixing
4 pages. Prepared for the proceedings of MESON 2018, 15th International Workshop on Meson Physics, KRAK\'OW, POLAND, 7th - 12th June 2018
null
10.1051/epjconf/201919905012
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
As a first step, a simple and pedagogical recall of the $\eta$-$\eta'$ system is presented, in which the role of the axial anomaly, related to the heterochiral nature of the multiplet of (pseudo)scalar states, is underlined. As a consequence, $\eta$ is close to the octet and $\eta'$ to the singlet configuration. On t...
[ { "created": "Thu, 13 Sep 2018 14:03:21 GMT", "version": "v1" }, { "created": "Mon, 29 Oct 2018 21:26:45 GMT", "version": "v2" } ]
2019-02-20
[ [ "Giacosa", "Francesco", "" ] ]
As a first step, a simple and pedagogical recall of the $\eta$-$\eta'$ system is presented, in which the role of the axial anomaly, related to the heterochiral nature of the multiplet of (pseudo)scalar states, is underlined. As a consequence, $\eta$ is close to the octet and $\eta'$ to the singlet configuration. On the...
1312.5720
Marco Tonini
Lucian A. Harland-Lang, Chun-Hay Kom, Kazuki Sakurai, Marco Tonini
Sharpening $m_{T2}$ cusps: the mass determination of semi-invisibly decaying particles from a resonance
18 pages, 13 figures, version 2 updated to JHEP 06 (2014) 175
JHEP 06 (2014) 175
10.1007/JHEP06(2014)175
IPPP/13/103, DCPT/13/206, KCL-PH-TH/2013-48, LCTS/1014-09, DESY-13-258
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We revisit mass determination techniques for the minimum symmetric event topology, namely $X$ pair production followed by $X \to \ell N$, where $X$ and $N$ are unknown particles with the masses to be measured, and $N$ is an invisible particle, concentrating on the case where $X$ is pair produced from a resonance. We ...
[ { "created": "Thu, 19 Dec 2013 20:08:34 GMT", "version": "v1" }, { "created": "Tue, 8 Jul 2014 11:58:49 GMT", "version": "v2" } ]
2014-07-09
[ [ "Harland-Lang", "Lucian A.", "" ], [ "Kom", "Chun-Hay", "" ], [ "Sakurai", "Kazuki", "" ], [ "Tonini", "Marco", "" ] ]
We revisit mass determination techniques for the minimum symmetric event topology, namely $X$ pair production followed by $X \to \ell N$, where $X$ and $N$ are unknown particles with the masses to be measured, and $N$ is an invisible particle, concentrating on the case where $X$ is pair produced from a resonance. We co...
0810.1892
Kazunori Nakayama
Junji Hisano, Masahiro Kawasaki, Kazunori Kohri, Kazunori Nakayama
Positron/Gamma-Ray Signatures of Dark Matter Annihilation and Big-Bang Nucleosynthesis
5 pages, 4 figures; added references and discussion; included PAMELA data; to appear in PRD; corrected the electromagnetic-emission part, which does not change our conclusion (v4)
Phys.Rev.D79:063514,2009; Erratum-ibid.D80:029907,2009
10.1103/PhysRevD.79.063514 10.1103/PhysRevD.80.029907
ICRR-Report-531, IPMU 08-0077
hep-ph astro-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The positron excess observed by the PAMELA experiment may come from dark matter annihilation, if the annihilation cross section is large enough. We show that the dark matter annihilation scenarios to explain the positron excess may also be compatible with the discrepancy of the cosmic lithium abundances between theor...
[ { "created": "Fri, 10 Oct 2008 14:56:50 GMT", "version": "v1" }, { "created": "Fri, 16 Jan 2009 08:51:04 GMT", "version": "v2" }, { "created": "Tue, 3 Mar 2009 18:57:01 GMT", "version": "v3" }, { "created": "Mon, 29 Jun 2009 10:15:54 GMT", "version": "v4" } ]
2014-11-18
[ [ "Hisano", "Junji", "" ], [ "Kawasaki", "Masahiro", "" ], [ "Kohri", "Kazunori", "" ], [ "Nakayama", "Kazunori", "" ] ]
The positron excess observed by the PAMELA experiment may come from dark matter annihilation, if the annihilation cross section is large enough. We show that the dark matter annihilation scenarios to explain the positron excess may also be compatible with the discrepancy of the cosmic lithium abundances between theory ...
hep-ph/9503293
Ramon Toldra. Ifae
E. Masso and R. Toldra
On a Light Spinless Particle Coupled to Photons
LaTex, 20p., 6 figures. Changes in sections 4, 5 and figure 2, our bounds are now more stringent. To be published in Physical Review D
Phys.Rev.D52:1755-1763,1995
10.1103/PhysRevD.52.1755
UAB-FT-361
hep-ph astro-ph
null
A pseudoscalar or scalar particle $\phi$ that couples to two photons but not to leptons, quarks and nucleons would have effects in most of the experiments searching for axions, since these are based on the $a \gamma \gamma $ coupling. We examine the laboratory, astrophysical and cosmological constraints on $\phi$ and...
[ { "created": "Fri, 10 Mar 1995 17:43:46 GMT", "version": "v1" }, { "created": "Mon, 13 Mar 1995 10:01:46 GMT", "version": "v2" }, { "created": "Wed, 7 Jun 1995 15:51:09 GMT", "version": "v3" } ]
2009-09-25
[ [ "Masso", "E.", "" ], [ "Toldra", "R.", "" ] ]
A pseudoscalar or scalar particle $\phi$ that couples to two photons but not to leptons, quarks and nucleons would have effects in most of the experiments searching for axions, since these are based on the $a \gamma \gamma $ coupling. We examine the laboratory, astrophysical and cosmological constraints on $\phi$ and s...
hep-ph/0311065
Stefano Laporta
S. Laporta (Univ. of Parma and INFN-Bologna)
Calculation of Feynman integrals by difference equations
LaTex, 10 pages, uses appolb.cls. Presented at the XXVII International Conference of Theoretical Physics "Matter to the Deepest", Ustron, Poland, 15-21 September 2003. To appear in Acta Physica Polonica. v2:added references
Acta Phys.Polon. B34 (2003) 5323-5334
null
null
hep-ph
null
In this paper we describe a method of calculation of master integrals based on the solution of systems of difference equations in one variable. Various explicit examples are given, as well as the generalization to arbitrary diagrams.
[ { "created": "Wed, 5 Nov 2003 18:05:52 GMT", "version": "v1" }, { "created": "Fri, 7 Nov 2003 14:20:20 GMT", "version": "v2" } ]
2007-05-23
[ [ "Laporta", "S.", "", "Univ. of Parma and INFN-Bologna" ] ]
In this paper we describe a method of calculation of master integrals based on the solution of systems of difference equations in one variable. Various explicit examples are given, as well as the generalization to arbitrary diagrams.
1707.08060
Joan Elias-Miro
A. Azatov, J. Elias-Miro, Y. Reyimuaji, E. Venturini
Novel measurements of anomalous triple gauge couplings for the LHC
26 p
null
10.1007/JHEP10(2017)027
SISSA 35/2017/FISI
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Finding better ways to prove the Standard Model Effective Field Theory is a very important direction of research. This paper focuses on measurements of Electroweak triple gauge couplings, paying special attention on the regime of validity of the Effective Field Theory (EFT). In this regard, one of our goals is to fin...
[ { "created": "Tue, 25 Jul 2017 16:01:27 GMT", "version": "v1" } ]
2017-10-25
[ [ "Azatov", "A.", "" ], [ "Elias-Miro", "J.", "" ], [ "Reyimuaji", "Y.", "" ], [ "Venturini", "E.", "" ] ]
Finding better ways to prove the Standard Model Effective Field Theory is a very important direction of research. This paper focuses on measurements of Electroweak triple gauge couplings, paying special attention on the regime of validity of the Effective Field Theory (EFT). In this regard, one of our goals is to find ...
hep-ph/0303169
A. B. Balantekin
A.B. Balantekin, H. Yuksel (Wisconsin U., Madison)
Do the KamLAND and Solar Neutrino Data Rule out Solar Density Fluctuations?
7 pages of double-column REVTEX4 with 7 figures
Phys.Rev. D68 (2003) 013006
10.1103/PhysRevD.68.013006
null
hep-ph
null
We elucidate effects of solar density fluctuations on neutrino propagation through the Sun. Using data from the recent solar neutrino and KamLAND experiments we provide stringent limits on solar density fluctuations. It is shown that the neutrino data constrains solar density fluctuations to be less than beta = 0.05 ...
[ { "created": "Wed, 19 Mar 2003 21:15:33 GMT", "version": "v1" } ]
2009-11-10
[ [ "Balantekin", "A. B.", "", "Wisconsin U., Madison" ], [ "Yuksel", "H.", "", "Wisconsin U., Madison" ] ]
We elucidate effects of solar density fluctuations on neutrino propagation through the Sun. Using data from the recent solar neutrino and KamLAND experiments we provide stringent limits on solar density fluctuations. It is shown that the neutrino data constrains solar density fluctuations to be less than beta = 0.05 at...
2208.06926
Taygun Bulmus
T. Bulmus, Y. Pehlivan
Spin-Flavor Precession Phase Effects in Supernova
18 pages, 10 figures
null
10.1016/j.cjph.2024.07.001
null
hep-ph astro-ph.HE astro-ph.SR
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the phase effects driven by neutrino magnetic moment for Majorana neutrinos in a core collapse supernova. A neutrino with a large magnetic moment is emitted in a superposition of energy eigenstates from the neutrinosphere. These energy eigenstates can interfere to create a phase effect at a partially adiabat...
[ { "created": "Sun, 14 Aug 2022 21:45:46 GMT", "version": "v1" }, { "created": "Tue, 13 Dec 2022 12:47:55 GMT", "version": "v2" }, { "created": "Fri, 29 Dec 2023 08:02:16 GMT", "version": "v3" }, { "created": "Tue, 9 Jul 2024 20:00:27 GMT", "version": "v4" } ]
2024-07-11
[ [ "Bulmus", "T.", "" ], [ "Pehlivan", "Y.", "" ] ]
We study the phase effects driven by neutrino magnetic moment for Majorana neutrinos in a core collapse supernova. A neutrino with a large magnetic moment is emitted in a superposition of energy eigenstates from the neutrinosphere. These energy eigenstates can interfere to create a phase effect at a partially adiabatic...
hep-ph/9612249
L. B. Okun
L. B. Okun
Fundamental Constants of Nature
10 pages, Latex, Invited paper to appear in the Proceedings of the Fifteenth International Conference on Atomic Physics: Zeeman-effect centenary. Wan der Waals - Zeeman Laboratory, University of Amsterdam, August 5-9, 1996
null
null
ITEP-TH-56/96
hep-ph
null
A brief review, from basic atomic constants to "Mendeleev Table" of leptons, quarks, fundamental bosons, and then to superunification of all forces and particles.
[ { "created": "Wed, 4 Dec 1996 13:21:15 GMT", "version": "v1" } ]
2007-05-23
[ [ "Okun", "L. B.", "" ] ]
A brief review, from basic atomic constants to "Mendeleev Table" of leptons, quarks, fundamental bosons, and then to superunification of all forces and particles.
hep-ph/9308331
null
M.B. Einhorn
Theory of Gauge Boson Structure
19 pages, (August, 1993) (LaTeX (article style) but input phyzzx.fonts, 4 figure files encoded using "uufiles"; hardcopies available upon request.) preprint UM-TH-93-17
null
null
null
hep-ph
null
Based on an Invited Plenary Talk given at ``Workshop on Physics and Experiments with Linear $e^+e^-$ Colliders,'' Waikoloa, Hawaii, April 26--30, 1993. This paper reviews theoretical issues concerning the structure of vector bosons, with emphasis on deviations of triple-vector-boson interactions from the predictions ...
[ { "created": "Tue, 24 Aug 1993 18:58:26 GMT", "version": "v1" } ]
2007-05-23
[ [ "Einhorn", "M. B.", "" ] ]
Based on an Invited Plenary Talk given at ``Workshop on Physics and Experiments with Linear $e^+e^-$ Colliders,'' Waikoloa, Hawaii, April 26--30, 1993. This paper reviews theoretical issues concerning the structure of vector bosons, with emphasis on deviations of triple-vector-boson interactions from the predictions of...
hep-ph/9212247
null
S.M. Bilenky
Neutrino Mixing
DFTT 67/92, LaTeX file, no figures
null
null
null
hep-ph
null
In the first part of these lectures the neutrino mixing hypothesis will be considered in detail. We will discuss the possible schemes of neutrino mixing and present the data of the recent experiments searching for effects due to nonvanishing neutrino masses and mixing angles.In the second part of these lectures the p...
[ { "created": "Thu, 10 Dec 1992 13:28:00 GMT", "version": "v1" } ]
2007-05-23
[ [ "Bilenky", "S. M.", "" ] ]
In the first part of these lectures the neutrino mixing hypothesis will be considered in detail. We will discuss the possible schemes of neutrino mixing and present the data of the recent experiments searching for effects due to nonvanishing neutrino masses and mixing angles.In the second part of these lectures the phy...
1004.3404
Chun Hay Kom
C. H. Kom and W. J. Stirling
Charge asymmetry in W + jets production at the LHC
13 pages, 7 figures. Reference added. Slightly modified text
Eur.Phys.J.C69:67-73,2010
10.1140/epjc/s10052-010-1353-z
Cavendish-HEP-2010/06
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The charge asymmetry in W + jets production at the LHC can serve to calibrate the presence of New Physics contributions. We study the ratio {\sigma}(W^+ + n jets)/{\sigma}(W^- + n jets) in the Standard Model for n <= 4, paying particular attention to the uncertainty in the prediction from higher-order perturbative co...
[ { "created": "Tue, 20 Apr 2010 10:54:55 GMT", "version": "v1" }, { "created": "Thu, 29 Apr 2010 17:49:44 GMT", "version": "v2" }, { "created": "Wed, 25 Aug 2010 14:04:12 GMT", "version": "v3" } ]
2011-03-28
[ [ "Kom", "C. H.", "" ], [ "Stirling", "W. J.", "" ] ]
The charge asymmetry in W + jets production at the LHC can serve to calibrate the presence of New Physics contributions. We study the ratio {\sigma}(W^+ + n jets)/{\sigma}(W^- + n jets) in the Standard Model for n <= 4, paying particular attention to the uncertainty in the prediction from higher-order perturbative corr...
hep-ph/0106191
Peter Kroll
P. Kroll (Wuppertal Univ.)
Generalized parton distributions at large momentum transfer
6 pages, 6 figures (using LATEX with sprocl.sty and epsfig), talk presented at the 9th International Workshop on Deep Inelastic Scattering (DIS2001), Bologna, April 2001
null
10.1142/9789812778345_0100
null
hep-ph
null
The role of generalized parton distributions in wide-angle exclusive reactions will be discussed. In contrast to deep virtual exclusive reactions the wide angle processes offer the possibility of investigating the generalized parton distributions at large momentum transfer.
[ { "created": "Mon, 18 Jun 2001 09:41:29 GMT", "version": "v1" } ]
2015-06-25
[ [ "Kroll", "P.", "", "Wuppertal Univ." ] ]
The role of generalized parton distributions in wide-angle exclusive reactions will be discussed. In contrast to deep virtual exclusive reactions the wide angle processes offer the possibility of investigating the generalized parton distributions at large momentum transfer.
2206.13520
Hongwan Liu
James S. Bolton, Andrea Caputo, Hongwan Liu and Matteo Viel
Hints of dark photon dark matter from observations and hydrodynamical simulations of the low-redshift Lyman-$\alpha$ forest
5+1 pages, 2+1 figures
null
10.1103/PhysRevLett.129.211102
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Recent work has suggested that an additional $\lesssim 6.9 \rm{\, eV}$ per baryon of heating in the intergalactic medium is needed to reconcile hydrodynamical simulations with Lyman-$\alpha$ forest absorption line widths at redshift $z\simeq 0.1$. Resonant conversion of dark photon dark matter into low frequency phot...
[ { "created": "Mon, 27 Jun 2022 18:00:00 GMT", "version": "v1" } ]
2023-07-19
[ [ "Bolton", "James S.", "" ], [ "Caputo", "Andrea", "" ], [ "Liu", "Hongwan", "" ], [ "Viel", "Matteo", "" ] ]
Recent work has suggested that an additional $\lesssim 6.9 \rm{\, eV}$ per baryon of heating in the intergalactic medium is needed to reconcile hydrodynamical simulations with Lyman-$\alpha$ forest absorption line widths at redshift $z\simeq 0.1$. Resonant conversion of dark photon dark matter into low frequency photon...
2310.11067
Martin Vollmann
Barbara J\"ager and Martin Vollmann
Sommerfeld effect for continuum gamma-ray spectra from Dark Matter annihilation
25 pages, 6 figures
null
null
null
hep-ph astro-ph.HE
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a calculation of the continuum part of the gamma-ray spectra resulting from Dark Matter annihilation in the framework of the MSSM taking into account Sommerfeld effects. Concentrating on pure wino and pure higgsino scenarios we compare our calculation to existing work and explore the numerical impact of th...
[ { "created": "Tue, 17 Oct 2023 08:19:15 GMT", "version": "v1" } ]
2023-10-18
[ [ "Jäger", "Barbara", "" ], [ "Vollmann", "Martin", "" ] ]
We present a calculation of the continuum part of the gamma-ray spectra resulting from Dark Matter annihilation in the framework of the MSSM taking into account Sommerfeld effects. Concentrating on pure wino and pure higgsino scenarios we compare our calculation to existing work and explore the numerical impact of the ...
1306.3984
Constantin Sluka
Stefan Antusch, Christian Gross, Vinzenz Maurer, Constantin Sluka
Inverse neutrino mass hierarchy in a flavour GUT model
18 pages, version published in NPB
Nucl.Phys. B879 (2014) 19-36
10.1016/j.nuclphysb.2013.11.017
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We construct a supersymmetric SU(5) x A_4 flavour GUT model in which an inverse neutrino mass hierarchy is realised without fine-tuning of parameters. The model shares some properties with the normal hierarchy model which we presented in arXiv:1305.6612 - in particular the relation theta_13^PMNS = theta_C / sqrt(2). ...
[ { "created": "Mon, 17 Jun 2013 20:00:00 GMT", "version": "v1" }, { "created": "Tue, 17 Dec 2013 18:12:33 GMT", "version": "v2" } ]
2013-12-18
[ [ "Antusch", "Stefan", "" ], [ "Gross", "Christian", "" ], [ "Maurer", "Vinzenz", "" ], [ "Sluka", "Constantin", "" ] ]
We construct a supersymmetric SU(5) x A_4 flavour GUT model in which an inverse neutrino mass hierarchy is realised without fine-tuning of parameters. The model shares some properties with the normal hierarchy model which we presented in arXiv:1305.6612 - in particular the relation theta_13^PMNS = theta_C / sqrt(2). Be...
hep-ph/0412402
Munshi Golam Mustafa Dr.
Munshi G. Mustafa
Energy Loss of Charm Quarks in the Quark-Gluon Plasma: Collisional vs Radiative
14 pages, 6 figures; this version is compiled with various sections than the earlier one along with additional discussion, one extra figure (Fig. 3) and two new curves in Fig. 4 in support of one approximation; revised version accepted in Phys. Rev. C
Phys.Rev.C72:014905,2005
10.1103/PhysRevC.72.014905
null
hep-ph nucl-th
null
Considering the collisional energy loss rates of heavy quarks from hard light parton interactions the total energy loss of a charm quark for a static medium has been computed. For the energy range $E\sim (5-10)$ GeV of charm quark, it is found to be almost same order as that of radiative ones estimated to a first ord...
[ { "created": "Wed, 29 Dec 2004 02:43:37 GMT", "version": "v1" }, { "created": "Tue, 24 May 2005 08:43:45 GMT", "version": "v2" } ]
2008-11-26
[ [ "Mustafa", "Munshi G.", "" ] ]
Considering the collisional energy loss rates of heavy quarks from hard light parton interactions the total energy loss of a charm quark for a static medium has been computed. For the energy range $E\sim (5-10)$ GeV of charm quark, it is found to be almost same order as that of radiative ones estimated to a first order...
1309.7343
Bogumi{\l}a \'Swie\.zewska
Bogumila Swiezewska
Decay rates of the Higgs boson to two photons and Z plus photon in Z_2-symmetric Two Higgs Doublet Models
3 pages, 2 figures, contribution to the proceedings of the European Physical Society Conference on High Energy Physics "EPS HEP 2013" (18-24 July 2013, Stockholm, Sweden), based on arXiv:1212.4100 [hep-ph] and arXiv:1305.6266 [hep-ph]
PoS(EPS-HEP 2013)066
null
IFT-8/2013
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Analysis of the 125 GeV Higgs boson decay rates to two photons and Z plus photon in the Inert Doublet Model is presented. We study the constraints on the masses of the scalars (in particular the Dark Matter candidate) and their couplings to the Higgs boson, coming from the h -> \gamma\gamma data and confront them wit...
[ { "created": "Fri, 27 Sep 2013 19:57:10 GMT", "version": "v1" } ]
2014-01-03
[ [ "Swiezewska", "Bogumila", "" ] ]
Analysis of the 125 GeV Higgs boson decay rates to two photons and Z plus photon in the Inert Doublet Model is presented. We study the constraints on the masses of the scalars (in particular the Dark Matter candidate) and their couplings to the Higgs boson, coming from the h -> \gamma\gamma data and confront them with ...
1812.00179
Huifeng Fu
Hui-feng Fu, Libo Jiang
Coupled-Channel-Induced $S-D$ mixing of Charmonia and Testing Possible Assignments for $Y(4260)$ and $Y(4360)$
13 pages, 5 figures, 5 tables
Eur. Phys. J. C (2019) 79:460
10.1140/epjc/s10052-019-6976-0
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The mass spectrum and the two-body open-charm decays of the $J^{PC}=1^{--}$ charmonium states are studied with the coupled-channel effects taken into account. The coupled-channel-induced mixing effects among the excited vector charmonia are studied. Based on our calculations of the masses and the decay widths, we fin...
[ { "created": "Sat, 1 Dec 2018 09:11:08 GMT", "version": "v1" }, { "created": "Mon, 3 Jun 2019 12:57:35 GMT", "version": "v2" } ]
2019-06-04
[ [ "Fu", "Hui-feng", "" ], [ "Jiang", "Libo", "" ] ]
The mass spectrum and the two-body open-charm decays of the $J^{PC}=1^{--}$ charmonium states are studied with the coupled-channel effects taken into account. The coupled-channel-induced mixing effects among the excited vector charmonia are studied. Based on our calculations of the masses and the decay widths, we find ...
2401.02168
Waqas Ahmed
Waqas Ahmed, Shabbar Raza
Supersymmetric Hybrid Inflation in Light of CMB Experiments and Swampland Conjectures
31 pages, 9 figures
null
null
null
hep-ph gr-qc
http://creativecommons.org/licenses/by-nc-sa/4.0/
This study revisits supersymmetric (SUSY) hybrid inflation in light of CMB experiments and swampland conjectures. We first show that if one adds radiative, soft mass, and SUGRA corrections to the scalar potential, supersymmetric hybrid inflation is still consistent with Planck 2018 despite an impression that it does ...
[ { "created": "Thu, 4 Jan 2024 09:48:32 GMT", "version": "v1" }, { "created": "Thu, 25 Jan 2024 12:00:42 GMT", "version": "v2" } ]
2024-01-26
[ [ "Ahmed", "Waqas", "" ], [ "Raza", "Shabbar", "" ] ]
This study revisits supersymmetric (SUSY) hybrid inflation in light of CMB experiments and swampland conjectures. We first show that if one adds radiative, soft mass, and SUGRA corrections to the scalar potential, supersymmetric hybrid inflation is still consistent with Planck 2018 despite an impression that it does no...
hep-ph/9603379
Gabriela Barenboim
G.Barenboim and J.Bernabeu
Spontaneous breakdown of CP in left-right symmetric models
22 pages, 1 postcript figure
Z.Phys. C73 (1997) 321-331
null
FTUV/96-9,IFIC/96-10
hep-ph
null
We show that it is possible to obtain spontaneous CP violation in the minimal $SU(2)_L \times SU(2)_R \times U(1)_{B-L}$, i.e. in a left right symmetric model containing a bidoublet and two triplets in the scalar sector. For this to be a natural scenario, the non-diagonal quartic couplings between the two scalar trip...
[ { "created": "Fri, 22 Mar 1996 10:54:38 GMT", "version": "v1" } ]
2007-05-23
[ [ "Barenboim", "G.", "" ], [ "Bernabeu", "J.", "" ] ]
We show that it is possible to obtain spontaneous CP violation in the minimal $SU(2)_L \times SU(2)_R \times U(1)_{B-L}$, i.e. in a left right symmetric model containing a bidoublet and two triplets in the scalar sector. For this to be a natural scenario, the non-diagonal quartic couplings between the two scalar triple...
hep-ph/0601135
Pietro Slavich
G. Degrassi, P. Gambino and P. Slavich
QCD Corrections to Radiative B Decays in the MSSM with Minimal Flavor Violation
16 pages, 5 figures; v2: version to appear in Phys. Lett. B
Phys.Lett.B635:335-342,2006
10.1016/j.physletb.2006.02.067
RM3-TH/06-1, DFTT-03/2006, LAPTH-1136/06
hep-ph
null
We compute the complete supersymmetric QCD corrections to the Wilson coefficients of the magnetic and chromomagnetic operators, relevant in the calculation of b -> s gamma decays, in the MSSM with Minimal Flavor Violation. We investigate the numerical impact of the new results for different choices of the MSSM parame...
[ { "created": "Tue, 17 Jan 2006 17:57:39 GMT", "version": "v1" }, { "created": "Fri, 17 Mar 2006 17:45:22 GMT", "version": "v2" } ]
2011-07-18
[ [ "Degrassi", "G.", "" ], [ "Gambino", "P.", "" ], [ "Slavich", "P.", "" ] ]
We compute the complete supersymmetric QCD corrections to the Wilson coefficients of the magnetic and chromomagnetic operators, relevant in the calculation of b -> s gamma decays, in the MSSM with Minimal Flavor Violation. We investigate the numerical impact of the new results for different choices of the MSSM paramete...
hep-ph/0311047
Sancho Moura Oliveira
S. M. Oliveira and R. Santos
New bounds on the mass of a b' quark
Presented by R. Santos at XXVII International Conference of Theoretical Physics, `Matter To The Deepest', Ustron, 15-21 September 2003, Poland. To appear in Acta Physica Polonica, http://th-www.if.uj.edu.pl/acta/
Acta Phys.Polon.B34:5523-5530,2003
null
null
hep-ph
null
In this work we present limits on a sequential down-type quark, b', based on the most recent DELPHI data. Using all available experimental data for m_b' > 96 GeV we conclude that a sequential four generations model is far from being experimentally excluded.
[ { "created": "Tue, 4 Nov 2003 13:54:40 GMT", "version": "v1" } ]
2010-11-23
[ [ "Oliveira", "S. M.", "" ], [ "Santos", "R.", "" ] ]
In this work we present limits on a sequential down-type quark, b', based on the most recent DELPHI data. Using all available experimental data for m_b' > 96 GeV we conclude that a sequential four generations model is far from being experimentally excluded.
2211.05787
Anirudh Prabhu
Anirudh Prabhu and Carlos Blanco
Constraints on Dark Matter-Electron Scattering from Molecular Cloud Ionization
8 pages, 3 figures
null
10.1103/PhysRevD.108.035035
null
hep-ph astro-ph.CO
http://creativecommons.org/licenses/by/4.0/
We demonstrate that ionization of $\text{H}_2$ by dark matter in dense molecular clouds can provide strong constraints on the scattering strength of dark matter with electrons. Molecular clouds have high UV-optical attenuation, shielding them from ultraviolet and X-ray photons. Their chemical and thermal evolution ar...
[ { "created": "Thu, 10 Nov 2022 19:00:00 GMT", "version": "v1" } ]
2023-08-28
[ [ "Prabhu", "Anirudh", "" ], [ "Blanco", "Carlos", "" ] ]
We demonstrate that ionization of $\text{H}_2$ by dark matter in dense molecular clouds can provide strong constraints on the scattering strength of dark matter with electrons. Molecular clouds have high UV-optical attenuation, shielding them from ultraviolet and X-ray photons. Their chemical and thermal evolution are ...
hep-ph/0701079
Fabio L. Braghin
Fabio L. Braghin
Aspects of matter-antimatter asymmetries in relativistic heavy ions collisions and Astroparticle Physics
Work presented at the 18th International Symposium Multiparticle Dynamics, Paraty September 2006. 3 pages
null
null
null
hep-ph
null
Matter-antimatter asymmetries observed in high energy / relativistic heavy ion collisions and, differently, in the Early Universe are discussed considering ideas from the phase diagram of strong interactions with assumptions that do not necessarilly rely on non-equilibrium conditions, and that are based in effects su...
[ { "created": "Wed, 10 Jan 2007 14:59:27 GMT", "version": "v1" } ]
2007-05-23
[ [ "Braghin", "Fabio L.", "" ] ]
Matter-antimatter asymmetries observed in high energy / relativistic heavy ion collisions and, differently, in the Early Universe are discussed considering ideas from the phase diagram of strong interactions with assumptions that do not necessarilly rely on non-equilibrium conditions, and that are based in effects such...
hep-ph/9603436
Colin Froggatt
C. D. Froggatt, H. B. Nielsen and D. J. Smith
Could there be a Fourth Generation of Quarks Without More Leptons?
uuencoded 17 page LaTeX file plus 2 postscript figures, uses epsf.sty
Z.Phys.C73:333-337,1997
10.1007/s002880050322
GUTPA/95/01/1
hep-ph
null
We investigate the possibility of adding a fourth generation of quarks. We also extend the Standard Model gauge group by adding another SU(N) component. In order to cancel the contributions of the fourth generation of quarks to the gauge anomalies we must add a generation of fermions coupling to the SU(N) group. This...
[ { "created": "Fri, 29 Mar 1996 13:21:51 GMT", "version": "v1" } ]
2008-11-26
[ [ "Froggatt", "C. D.", "" ], [ "Nielsen", "H. B.", "" ], [ "Smith", "D. J.", "" ] ]
We investigate the possibility of adding a fourth generation of quarks. We also extend the Standard Model gauge group by adding another SU(N) component. In order to cancel the contributions of the fourth generation of quarks to the gauge anomalies we must add a generation of fermions coupling to the SU(N) group. This m...
2210.17110
Marco Drewes
Marco Drewes
Distinguishing Dirac and Majorana Heavy Neutrinos at Lepton Colliders
Typos corrected, an error fixed, discussion extended, references added, link to GitHub repository with code for sensitivity region estimates added. Contribution to the proceedings of the 41st International Conference on High Energy Physics (ICHEP2022). Footnotes added with additional explanations that cannot be...
PoS ICHEP2022 (2022) 608
10.22323/1.414.0608
IRMP-CP3-22-52
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We discuss the potential to observe lepton number violation (LNV) in displaced vertex searches for heavy neutral leptons (HNLs) at future lepton colliders. Even though a direct detection of LNV is impossible for the dominant production channel because lepton number is carried away by an unobservable neutrino, there a...
[ { "created": "Mon, 31 Oct 2022 07:35:36 GMT", "version": "v1" }, { "created": "Fri, 16 Dec 2022 14:37:31 GMT", "version": "v2" } ]
2023-01-16
[ [ "Drewes", "Marco", "" ] ]
We discuss the potential to observe lepton number violation (LNV) in displaced vertex searches for heavy neutral leptons (HNLs) at future lepton colliders. Even though a direct detection of LNV is impossible for the dominant production channel because lepton number is carried away by an unobservable neutrino, there are...
1505.01059
Abdelhak Djouadi
Abdelhak Djouadi
Higgs Physics
18 pages, 15 figures. Proceedings of the Corfu Summer Institute 2014 "School and Workshops on Elementary Particle Physics and Gravity", 3-21 September 2014, Corfu, Greece
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The implications of the discovery of a scalar Higgs boson at the LHC with a mass of approximately 125 GeV are summarised in the context of the Standard Model of particle physics with its unique scalar boson and of its most celebrated new physics extension, the minimal supersymmetric Standard Model or MSSM, in which t...
[ { "created": "Tue, 5 May 2015 16:05:51 GMT", "version": "v1" } ]
2015-05-06
[ [ "Djouadi", "Abdelhak", "" ] ]
The implications of the discovery of a scalar Higgs boson at the LHC with a mass of approximately 125 GeV are summarised in the context of the Standard Model of particle physics with its unique scalar boson and of its most celebrated new physics extension, the minimal supersymmetric Standard Model or MSSM, in which the...
2211.17092
Alexander Agafonov
A. I. Agafonov
Resonance enhancement of the electromagnetic interaction between two charged particles in the bound state in the continuum
4 pages, 1 figure
null
null
null
hep-ph hep-th
http://creativecommons.org/licenses/by-nc-nd/4.0/
In bound states in the continuum (BIC) the mass of a composite particle is greater than the total mass of its constituents. Using the ladder Bethe-Salpeter equation, the BIC state in a system of two charged particles $a$ and $b$ with different masses ($m_{b}>>m_{a}$) is investigated. We demonstrate that for the posit...
[ { "created": "Tue, 29 Nov 2022 11:07:34 GMT", "version": "v1" }, { "created": "Wed, 22 Feb 2023 09:58:04 GMT", "version": "v2" } ]
2023-02-23
[ [ "Agafonov", "A. I.", "" ] ]
In bound states in the continuum (BIC) the mass of a composite particle is greater than the total mass of its constituents. Using the ladder Bethe-Salpeter equation, the BIC state in a system of two charged particles $a$ and $b$ with different masses ($m_{b}>>m_{a}$) is investigated. We demonstrate that for the positiv...
hep-ph/0209197
Hirotsugu Fujii
H. Fujii
J/psi suppression in heavy ion collisions by quark momentum diffusion
2 pages (1 figure)
Phys.Rev.C67:031901,2003
10.1103/PhysRevC.67.031901
UT-KOMABA-02-10
hep-ph nucl-th
null
The momentum diffusion effect of the quark pair due to the multiple scattering in a nuclear medium is studied to explain the observed J/psi yields in SPS experiments. The resulting suppression is found to be insufficient to reproduce the J/psi yield in Pb-Pb collisions at SPS energy.
[ { "created": "Wed, 18 Sep 2002 09:07:06 GMT", "version": "v1" }, { "created": "Mon, 11 Nov 2002 10:17:51 GMT", "version": "v2" }, { "created": "Tue, 24 Dec 2002 08:13:22 GMT", "version": "v3" } ]
2009-11-07
[ [ "Fujii", "H.", "" ] ]
The momentum diffusion effect of the quark pair due to the multiple scattering in a nuclear medium is studied to explain the observed J/psi yields in SPS experiments. The resulting suppression is found to be insufficient to reproduce the J/psi yield in Pb-Pb collisions at SPS energy.
hep-ph/9709439
Carlo Giunti
C. Giunti, C.W. Kim, M. Monteno
Atmospheric neutrino oscillations with three neutrinos and a mass hierarchy
42 pages, including 7 figures
Nucl.Phys.B521:3-36,1998
10.1016/S0550-3213(98)00105-9
DFTT 32/97, KIAS-P97004
hep-ph
null
A comprehensive formalism for the description of neutrino oscillations in the Earth in a general scheme with three massive neutrinos and the mass hierarchy m_1<<m_2<<m_3 is presented. Using this formalism, which is valid both in vacuum and in a medium, the matter effect on the oscillations of low-energy neutrinos is ...
[ { "created": "Wed, 24 Sep 1997 13:35:00 GMT", "version": "v1" }, { "created": "Thu, 21 May 1998 11:51:11 GMT", "version": "v2" } ]
2011-07-19
[ [ "Giunti", "C.", "" ], [ "Kim", "C. W.", "" ], [ "Monteno", "M.", "" ] ]
A comprehensive formalism for the description of neutrino oscillations in the Earth in a general scheme with three massive neutrinos and the mass hierarchy m_1<<m_2<<m_3 is presented. Using this formalism, which is valid both in vacuum and in a medium, the matter effect on the oscillations of low-energy neutrinos is di...
hep-ph/0603229
Ben Gripaios
Ben Gripaios and Stephen M. West
Improved Higgs Naturalness With or Without Supersymmetry
5 pages, 2 postscript figures; PRD version
Phys.Rev. D74 (2006) 075002
10.1103/PhysRevD.74.075002
OUTP-0607P
hep-ph
null
Many models of electroweak symmetry-breaking with an extended Higgs sector exhibit improved naturalness, wherein the new physics scale, at which quadratic divergences of Higgs mass parameters due to top quark loops are cut off, can be pushed beyond the reach of the Large Hadron Collider without unnatural fine tuning....
[ { "created": "Tue, 28 Mar 2006 17:26:27 GMT", "version": "v1" }, { "created": "Tue, 29 Aug 2006 11:19:59 GMT", "version": "v2" }, { "created": "Thu, 12 Oct 2006 11:27:52 GMT", "version": "v3" } ]
2009-11-11
[ [ "Gripaios", "Ben", "" ], [ "West", "Stephen M.", "" ] ]
Many models of electroweak symmetry-breaking with an extended Higgs sector exhibit improved naturalness, wherein the new physics scale, at which quadratic divergences of Higgs mass parameters due to top quark loops are cut off, can be pushed beyond the reach of the Large Hadron Collider without unnatural fine tuning. S...
2003.02802
Jesse Giron
Jesse F. Giron and Richard F. Lebed
The Spectrum of $P$-Wave Hidden-Charm Exotic Mesons in the Diquark Model
15 pages, 1 LaTeX figures. Small revisions to the Reference section. Level diagram has now been included as a figure
Phys. Rev. D 101, 074032 (2020)
10.1103/PhysRevD.101.074032
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the fine structure in the spectrum of known and predicted negative-parity hidden-charm exotic meson states, which comprise the lowest $P$-wave multiplet in the dynamical diquark model. Starting with a form previously shown to successfully describe the $S$-wave states, we develop a 5-parameter Hamiltonian tha...
[ { "created": "Thu, 5 Mar 2020 18:06:59 GMT", "version": "v1" }, { "created": "Wed, 11 Mar 2020 14:08:00 GMT", "version": "v2" }, { "created": "Tue, 14 Apr 2020 18:42:37 GMT", "version": "v3" } ]
2020-05-06
[ [ "Giron", "Jesse F.", "" ], [ "Lebed", "Richard F.", "" ] ]
We study the fine structure in the spectrum of known and predicted negative-parity hidden-charm exotic meson states, which comprise the lowest $P$-wave multiplet in the dynamical diquark model. Starting with a form previously shown to successfully describe the $S$-wave states, we develop a 5-parameter Hamiltonian that ...
1009.3501
David Marsh
David J. E. Marsh and Pedro G. Ferreira
Ultra-Light Scalar Fields and the Growth of Structure in the Universe
12 pages, 11 figures
Phys.Rev.D82:103528,2010
10.1103/PhysRevD.82.103528
OUTP-10-25P
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Ultra-light scalar fields, with masses of between m=10^{-33} eV and m=10^{-22} eV, can affect the growth of structure in the Universe. We identify the different regimes in the evolution of ultra-light scalar fields, how they affect the expansion rate of the universe and how they affect the growth rate of cosmological...
[ { "created": "Fri, 17 Sep 2010 20:06:26 GMT", "version": "v1" } ]
2010-12-23
[ [ "Marsh", "David J. E.", "" ], [ "Ferreira", "Pedro G.", "" ] ]
Ultra-light scalar fields, with masses of between m=10^{-33} eV and m=10^{-22} eV, can affect the growth of structure in the Universe. We identify the different regimes in the evolution of ultra-light scalar fields, how they affect the expansion rate of the universe and how they affect the growth rate of cosmological p...
1207.1246
Prasanta Das Kumar
Prasanta Kumar Das and Abhishodh Prakash
Effect of earth rotation on pair production of Standard Model Higgs bosons at linear colliders in the noncommutative space-time
20 pages, 16 eps figures. arXiv admin note: substantial text overlap with arXiv:1009.3571
Int. J. Mod. Phys. A 28, 1350004 (2013)
10.1142/S0217751X13500048
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the neutral Higgs boson pair production through $e^{+} e^{-}$ collision in the noncommutative(NC) extension of the standard model using the Seiberg-Witten maps of this to the first order of the noncommutative parameter $\Theta_{\mu \nu}$. This process is forbidden in the standard model at the tree level with...
[ { "created": "Thu, 5 Jul 2012 13:09:39 GMT", "version": "v1" } ]
2014-11-18
[ [ "Das", "Prasanta Kumar", "" ], [ "Prakash", "Abhishodh", "" ] ]
We study the neutral Higgs boson pair production through $e^{+} e^{-}$ collision in the noncommutative(NC) extension of the standard model using the Seiberg-Witten maps of this to the first order of the noncommutative parameter $\Theta_{\mu \nu}$. This process is forbidden in the standard model at the tree level with b...
0911.1006
Fei Wang
Csaba Balazs, Zhaofeng Kang, Tianjun Li, Fei Wang, Jin Min Yang
Realistic Flipped SU(5) from Orbifold SO(10)
25 pages, 1 fig
JHEP 1002:096,2010
10.1007/JHEP02(2010)096
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We propose a realistic flipped SU(5) model derived from a five-dimensional orbifold SO(10) model. The Standard Model (SM) fermion masses and mixings are explained by combining the traditional Froggatt-Nielsen mechanism with the five-dimensional wave function profiles of the SM fermions. Employing tree-level spontaneo...
[ { "created": "Thu, 5 Nov 2009 10:28:12 GMT", "version": "v1" } ]
2010-03-02
[ [ "Balazs", "Csaba", "" ], [ "Kang", "Zhaofeng", "" ], [ "Li", "Tianjun", "" ], [ "Wang", "Fei", "" ], [ "Yang", "Jin Min", "" ] ]
We propose a realistic flipped SU(5) model derived from a five-dimensional orbifold SO(10) model. The Standard Model (SM) fermion masses and mixings are explained by combining the traditional Froggatt-Nielsen mechanism with the five-dimensional wave function profiles of the SM fermions. Employing tree-level spontaneous...
hep-ph/0109250
Stefan Wolf
Th. Mannel (U. of Karlsruhe), St. Wolf (U. of Valencia)
Non-perturbative effects in semi-leptonic B_c decays
LaTeX, 22 pages, 1 figure
Phys.Rev.D65:074012,2002
10.1103/PhysRevD.65.074012
TTP01-24, FTUV-01-0926
hep-ph
null
We discuss the impact of the soft degrees of freedom inside the B_c meson on its rate in the semi-leptonic decay B_c -> X l nu_l where X denotes light hadrons below the D^0 threshold. In particular we identify contributions involving soft hadrons which are non-vanishing in the limit of massless leptons. These contrib...
[ { "created": "Wed, 26 Sep 2001 17:24:47 GMT", "version": "v1" } ]
2011-03-23
[ [ "Mannel", "Th.", "", "U. of Karlsruhe" ], [ "Wolf", "St.", "", "U. of Valencia" ] ]
We discuss the impact of the soft degrees of freedom inside the B_c meson on its rate in the semi-leptonic decay B_c -> X l nu_l where X denotes light hadrons below the D^0 threshold. In particular we identify contributions involving soft hadrons which are non-vanishing in the limit of massless leptons. These contribut...
0909.2460
Bruce Mellado
T. Han and B. Mellado
Higgs Boson Searches and the Hbbar Coupling at the LHeC
9 pages, 7 figures
Phys.Rev.D82:016009,2010
10.1103/PhysRevD.82.016009
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Once the existence of the Higgs boson is established at the CERN Large Hadron Collider (LHC), the focus will be shifted toward understanding its couplings to other particles. A crucial aspect is the measurement of the bottom Yukawa coupling, which is challenging at the LHC. In this paper we study the use of forward j...
[ { "created": "Mon, 14 Sep 2009 02:06:10 GMT", "version": "v1" } ]
2014-11-20
[ [ "Han", "T.", "" ], [ "Mellado", "B.", "" ] ]
Once the existence of the Higgs boson is established at the CERN Large Hadron Collider (LHC), the focus will be shifted toward understanding its couplings to other particles. A crucial aspect is the measurement of the bottom Yukawa coupling, which is challenging at the LHC. In this paper we study the use of forward jet...
1308.2803
Alex Pomarol
Alex Pomarol and Francesco Riva
Towards the Ultimate SM Fit to Close in on Higgs Physics
20 pages, 5 figures, v2: typos corrected. JHEP version
null
10.1007/JHEP01(2014)151
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
With the discovery of the Higgs at the LHC, experiments have finally addressed all aspects of the Standard Model (SM). At this stage, it is important to understand which windows for beyond the SM (BSM) physics are still open, and which are instead tightly closed. We address this question by parametrizing BSM effects ...
[ { "created": "Tue, 13 Aug 2013 09:51:35 GMT", "version": "v1" }, { "created": "Tue, 28 Jan 2014 14:15:43 GMT", "version": "v2" } ]
2015-06-16
[ [ "Pomarol", "Alex", "" ], [ "Riva", "Francesco", "" ] ]
With the discovery of the Higgs at the LHC, experiments have finally addressed all aspects of the Standard Model (SM). At this stage, it is important to understand which windows for beyond the SM (BSM) physics are still open, and which are instead tightly closed. We address this question by parametrizing BSM effects wi...
hep-ph/0309254
Troy Andre
Troy C. Andre and Jonathan L. Rosner
Exotic Q=-1/3 Quark Signatures at High-Energy Hadron Colliders
Minor changes to text, converted to Revtex4, 38 pages, 9 figures, to be submitted to Phys. Rev. D
Phys.Rev.D69:035009,2004
10.1103/PhysRevD.69.035009
null
hep-ph
null
Isosinglet vector-like quarks are predicted by some unified theories of electroweak and strong interactions. We study hadron collider signatures for the production and decay of isosinglet vector-like quarks with charge -1/3. Previous analyses of Run I data from the Fermilab Tevatron are used to set lower limits of 10...
[ { "created": "Mon, 22 Sep 2003 20:56:11 GMT", "version": "v1" }, { "created": "Thu, 2 Oct 2003 22:23:07 GMT", "version": "v2" } ]
2014-11-17
[ [ "Andre", "Troy C.", "" ], [ "Rosner", "Jonathan L.", "" ] ]
Isosinglet vector-like quarks are predicted by some unified theories of electroweak and strong interactions. We study hadron collider signatures for the production and decay of isosinglet vector-like quarks with charge -1/3. Previous analyses of Run I data from the Fermilab Tevatron are used to set lower limits of 100-...
1309.7211
Carlos Hidalgo-Duque
Carlos Hidalgo-Duque, Felipe J. Llanes-Estrada
Soft interactions in jet quenching
14 pages, 16 figures
null
10.1142/S0217751X15500670
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the collisional aspects of jet quenching in a high energy nuclear collision, especially in the final state pion gas. The jet has a large energy, and acquires momentum transverse to its axis more effectively by multiple soft collisions than by few hard scatterings (as known from analogous systems such as J/\p...
[ { "created": "Fri, 27 Sep 2013 11:53:49 GMT", "version": "v1" }, { "created": "Fri, 4 Oct 2013 07:06:15 GMT", "version": "v2" }, { "created": "Mon, 7 Oct 2013 19:13:12 GMT", "version": "v3" }, { "created": "Thu, 28 Nov 2013 09:49:38 GMT", "version": "v4" }, { "cre...
2015-07-07
[ [ "Hidalgo-Duque", "Carlos", "" ], [ "Llanes-Estrada", "Felipe J.", "" ] ]
We study the collisional aspects of jet quenching in a high energy nuclear collision, especially in the final state pion gas. The jet has a large energy, and acquires momentum transverse to its axis more effectively by multiple soft collisions than by few hard scatterings (as known from analogous systems such as J/\psi...
hep-ph/0210293
Sandy Donnachie
F.E. Close, A. Donnachie and Yu.S. Kalashnikova
Radiative decays: a new flavour filter
12 pages, 1 table, 0 figures
Phys.Rev. D67 (2003) 074031
10.1103/PhysRevD.67.074031
null
hep-ph
null
Radiative decays of the $1^3D_1$ orbital excitations of the $\rho$, $\omega$ and $\phi$ to the scalars $f_0(1370)$, $f_0(1500)$ and $f_0(1710)$ are shown to provide a flavour filter, clarifying the extent of glueball mixing in the scalar states. A complementary approach to the latter is provided by the radiative deca...
[ { "created": "Tue, 22 Oct 2002 10:46:50 GMT", "version": "v1" } ]
2009-11-07
[ [ "Close", "F. E.", "" ], [ "Donnachie", "A.", "" ], [ "Kalashnikova", "Yu. S.", "" ] ]
Radiative decays of the $1^3D_1$ orbital excitations of the $\rho$, $\omega$ and $\phi$ to the scalars $f_0(1370)$, $f_0(1500)$ and $f_0(1710)$ are shown to provide a flavour filter, clarifying the extent of glueball mixing in the scalar states. A complementary approach to the latter is provided by the radiative decays...
hep-ph/0103219
Ove Scavenius
O. Scavenius, A. Dumitru, A.D. Jackson
Explosive Decomposition in Ultrarelativistic Heavy Ion Collision
5 pages latex and 10 figures, Version accepted for PRL (but page 5 containing additional 6 figures will not appear in PRL)
Phys.Rev.Lett. 87 (2001) 182302
10.1103/PhysRevLett.87.182302
null
hep-ph cond-mat hep-lat nucl-th
null
Recent results from Au+Au collisions at BNL-RHIC energy hint at explosive hadron production at the QCD transition rather than soft hydrodynamic evolution. We speculate that this is due to a rapid variation of the effective potential for QCD close to Tc. Performing real-time lattice simulations of an effective theory ...
[ { "created": "Tue, 20 Mar 2001 16:18:27 GMT", "version": "v1" }, { "created": "Thu, 13 Sep 2001 12:03:51 GMT", "version": "v2" } ]
2009-11-07
[ [ "Scavenius", "O.", "" ], [ "Dumitru", "A.", "" ], [ "Jackson", "A. D.", "" ] ]
Recent results from Au+Au collisions at BNL-RHIC energy hint at explosive hadron production at the QCD transition rather than soft hydrodynamic evolution. We speculate that this is due to a rapid variation of the effective potential for QCD close to Tc. Performing real-time lattice simulations of an effective theory we...
hep-ph/0102074
Brenna Flaugher
T. Affolder, et al. (CDF Collaboration)
Measurement of the Inclusive Jet Cross Section in ${\bar p p}$ collisions at $\sqrt{s}=1.8$ TeV
123 pages, 46 figures
Phys.Rev.D64:032001,2001; Erratum-ibid.D65:039903,2002
10.1103/PhysRevD.64.032001 10.1103/PhysRevD.65.039903
fnal-pub-01/008-E
hep-ph hep-ex
null
We present results from the measurement of the inclusive jet cross section for jet transverse energies from 40 to 465 GeV in the pseudo-rapidity range $0.1<|\eta|<0.7$. The results are based on 87 $pb^{-1}$ of data collected by the CDF collaboration at the Fermilab Tevatron Collider. The data are consistent with prev...
[ { "created": "Tue, 6 Feb 2001 23:05:13 GMT", "version": "v1" } ]
2014-11-17
[ [ "Affolder", "T.", "" ] ]
We present results from the measurement of the inclusive jet cross section for jet transverse energies from 40 to 465 GeV in the pseudo-rapidity range $0.1<|\eta|<0.7$. The results are based on 87 $pb^{-1}$ of data collected by the CDF collaboration at the Fermilab Tevatron Collider. The data are consistent with previo...
hep-ph/0601236
Andrew Cohen
Andrew G. Cohen and Sheldon L. Glashow
Very Special Relativity
3 pages, revtex
Phys.Rev.Lett. 97 (2006) 021601
10.1103/PhysRevLett.97.021601
null
hep-ph
null
By Very Special Relativity (VSR) we mean descriptions of nature whose space-time symmetries are certain proper subgroups of the Poincar\'e group. These subgroups contain space-time translations together with at least a 2-parameter subgroup of the Lorentz group isomorphic to that generated by $K_{x}+J_{y}$ and $K_{y}-...
[ { "created": "Fri, 27 Jan 2006 21:27:43 GMT", "version": "v1" } ]
2009-11-11
[ [ "Cohen", "Andrew G.", "" ], [ "Glashow", "Sheldon L.", "" ] ]
By Very Special Relativity (VSR) we mean descriptions of nature whose space-time symmetries are certain proper subgroups of the Poincar\'e group. These subgroups contain space-time translations together with at least a 2-parameter subgroup of the Lorentz group isomorphic to that generated by $K_{x}+J_{y}$ and $K_{y}-J_...
hep-ph/0305085
T. L. Trueman
T.L. Trueman (BNL)
Proton-carbon CNI polarimetry and the spin-dependence of the Pomeron
null
null
null
null
hep-ph
null
Recent polarized proton experiments at Brookhaven National Laboratory are used as a basis for a model of the energy dependence of the analyzing power of proton-carbon elastic scattering. In addition to their practical value for polarimetry, the results of this analysis give constraints on the size of the Pomeron spin...
[ { "created": "Thu, 8 May 2003 14:46:32 GMT", "version": "v1" } ]
2007-05-23
[ [ "Trueman", "T. L.", "", "BNL" ] ]
Recent polarized proton experiments at Brookhaven National Laboratory are used as a basis for a model of the energy dependence of the analyzing power of proton-carbon elastic scattering. In addition to their practical value for polarimetry, the results of this analysis give constraints on the size of the Pomeron spin-f...
2208.08020
Jayden Newstead
Nicole F. Bell, James B. Dent, Bhaskar Dutta, Jason Kumar, Jayden L. Newstead
Low-Mass dark matter (in)direct detection with inelastic scattering
8 pages, 8 figures (appendix added with more detail)
Phys. Rev. D 106, 103016 (2022)
10.1103/PhysRevD.106.103016
null
hep-ph astro-ph.HE
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We revisit the detection of luminous dark matter in direct detection experiments. In this scenario, dark matter scatters endothermically to produce an excited state, which decays to produce a photon. We explore ways in which the electron recoil signal from the decay photon can be differentiated from other potential e...
[ { "created": "Wed, 17 Aug 2022 02:03:28 GMT", "version": "v1" }, { "created": "Tue, 15 Nov 2022 23:51:04 GMT", "version": "v2" } ]
2022-11-17
[ [ "Bell", "Nicole F.", "" ], [ "Dent", "James B.", "" ], [ "Dutta", "Bhaskar", "" ], [ "Kumar", "Jason", "" ], [ "Newstead", "Jayden L.", "" ] ]
We revisit the detection of luminous dark matter in direct detection experiments. In this scenario, dark matter scatters endothermically to produce an excited state, which decays to produce a photon. We explore ways in which the electron recoil signal from the decay photon can be differentiated from other potential ele...
hep-ph/0405253
Genevieve Belanger
G. Belanger, F. Boudjema, A. Pukhov, A. Semenov
micrOMEGAs: Version 1.3
45 pages
Comput.Phys.Commun.174:577-604,2006
10.1016/j.cpc.2005.12.005
LAPTH-1044
hep-ph
null
We present the latest version of micromegas, a code that calculates the relic density of the lightest supersymmetric particle in the MSSM. All tree-level processes for the annihilation of the LSP are included as well as all possible coannihilation processes with neutralinos, charginos, sleptons, squarks and gluinos. ...
[ { "created": "Tue, 25 May 2004 16:36:30 GMT", "version": "v1" } ]
2008-11-26
[ [ "Belanger", "G.", "" ], [ "Boudjema", "F.", "" ], [ "Pukhov", "A.", "" ], [ "Semenov", "A.", "" ] ]
We present the latest version of micromegas, a code that calculates the relic density of the lightest supersymmetric particle in the MSSM. All tree-level processes for the annihilation of the LSP are included as well as all possible coannihilation processes with neutralinos, charginos, sleptons, squarks and gluinos. Th...
2007.10343
Jessica Turner
Stefan Hoeche, Jonathan Kozaczuk, Andrew J. Long, Jessica Turner and Yikun Wang
Towards an all-orders calculation of the electroweak bubble wall velocity
One minor typo removed on page 7 and one reference updated
null
10.1088/1475-7516/2021/03/009
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We analyze Higgs condensate bubble expansion during a first-order electroweak phase transition in the early Universe. The interaction of particles with the bubble wall can be accompanied by the emission of multiple soft gauge bosons. When computed at fixed order in perturbation theory, this process exhibits large log...
[ { "created": "Mon, 20 Jul 2020 18:00:01 GMT", "version": "v1" }, { "created": "Wed, 30 Sep 2020 15:08:32 GMT", "version": "v2" }, { "created": "Mon, 8 Feb 2021 14:24:04 GMT", "version": "v3" }, { "created": "Tue, 16 Mar 2021 10:03:22 GMT", "version": "v4" } ]
2021-03-17
[ [ "Hoeche", "Stefan", "" ], [ "Kozaczuk", "Jonathan", "" ], [ "Long", "Andrew J.", "" ], [ "Turner", "Jessica", "" ], [ "Wang", "Yikun", "" ] ]
We analyze Higgs condensate bubble expansion during a first-order electroweak phase transition in the early Universe. The interaction of particles with the bubble wall can be accompanied by the emission of multiple soft gauge bosons. When computed at fixed order in perturbation theory, this process exhibits large logar...
hep-ph/0502216
Tomoki Endo
Tomoki Endo, Toshiki Maruyama, Satoshi Chiba and Toshitaka Tatsumi
Hadron-quark matter phase transition in neutron stars
17 pages, 16 figures, Lecture note of "Hot points in Astrophysics and Cosmology"
null
null
null
hep-ph
null
A structured mixed phase consisting of quark and hadron phases is numerically studied with the Coulomb screening effect and the surface effect. We carefully introduced the Coulomb potential, so that a geometrical structure becomes mechanically unstable when the surface tension is large. Charge densities are largely r...
[ { "created": "Wed, 23 Feb 2005 11:10:43 GMT", "version": "v1" }, { "created": "Thu, 3 Mar 2005 05:58:25 GMT", "version": "v2" } ]
2007-05-23
[ [ "Endo", "Tomoki", "" ], [ "Maruyama", "Toshiki", "" ], [ "Chiba", "Satoshi", "" ], [ "Tatsumi", "Toshitaka", "" ] ]
A structured mixed phase consisting of quark and hadron phases is numerically studied with the Coulomb screening effect and the surface effect. We carefully introduced the Coulomb potential, so that a geometrical structure becomes mechanically unstable when the surface tension is large. Charge densities are largely rea...
1112.5646
Andras Ster
B\'ela Luk\'acs and Andr\'as Ster
Entropy Production and Particle Yields in Heavy Ion Collisions at LHC
Presented at the 12th Zim\'anyi Winter School on Relativistic Heavy Ion Collisions, December 3-7, 2012. Supported by OTKA NK 101438
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A scheme is proposed for calculating the entropy production in highly transparent colliding systems. The formalism is continuum physical and fully conform with thermodynamics; and the calculation is explicit in entropy production. We have analyzed high energy heavy ion collisions from view point of thermodynamics. En...
[ { "created": "Fri, 23 Dec 2011 19:50:52 GMT", "version": "v1" }, { "created": "Mon, 2 Jul 2012 17:30:49 GMT", "version": "v2" }, { "created": "Thu, 15 Nov 2012 00:31:40 GMT", "version": "v3" }, { "created": "Tue, 26 Apr 2016 22:32:43 GMT", "version": "v4" } ]
2016-04-28
[ [ "Lukács", "Béla", "" ], [ "Ster", "András", "" ] ]
A scheme is proposed for calculating the entropy production in highly transparent colliding systems. The formalism is continuum physical and fully conform with thermodynamics; and the calculation is explicit in entropy production. We have analyzed high energy heavy ion collisions from view point of thermodynamics. Entr...
hep-ph/9610332
Samuel Wallon
S. Wallon
QCD dipole predictions for quark singlet, gluon and $F_L/F_T$ distributions at HERA
10 pages, latex file, 4 figures Talk given at the XXXIth Rencontres de Moriond QCD and High Energy Hadronic Interactions March 23-30, 1996, Les Arcs, France
null
null
Saclay preprint SPhT T96/048
hep-ph
null
In this contribution we apply the QCD dipole picture combined with $k_T$-factorization to get predictions for deep-inelastic scattering on an onium. Assuming renormalization-group factorization, we get predictions for the $F_2, F_G$ and $R= F_L/F_T$ proton structure functions. We obtain a three-parameter fit of the 1...
[ { "created": "Fri, 11 Oct 1996 15:02:42 GMT", "version": "v1" } ]
2007-05-23
[ [ "Wallon", "S.", "" ] ]
In this contribution we apply the QCD dipole picture combined with $k_T$-factorization to get predictions for deep-inelastic scattering on an onium. Assuming renormalization-group factorization, we get predictions for the $F_2, F_G$ and $R= F_L/F_T$ proton structure functions. We obtain a three-parameter fit of the 199...
1307.2625
Matthias Burkardt
Lekha Adhikari and Matthias Burkardt
Distribution of Angular Momentum in the Transverse Plane
Proceedings: Light Cone 2012 Delhi
null
10.1016/j.nuclphysbps.2014.04.018
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Fourier transforms of GPDs describe the distribution of partons in the transverse plane. The 2nd moment of GPDs has been identified by X.Ji with the angular momentum (orbital plus spin) carried by the quarks - a fundamental result that is being widely utilized in the spin decomposition of a longitudinally polarized n...
[ { "created": "Tue, 9 Jul 2013 23:23:27 GMT", "version": "v1" } ]
2015-06-16
[ [ "Adhikari", "Lekha", "" ], [ "Burkardt", "Matthias", "" ] ]
Fourier transforms of GPDs describe the distribution of partons in the transverse plane. The 2nd moment of GPDs has been identified by X.Ji with the angular momentum (orbital plus spin) carried by the quarks - a fundamental result that is being widely utilized in the spin decomposition of a longitudinally polarized nuc...
1310.2218
Marlene Nahrgang
Marlene Nahrgang, J\"org Aichelin, Pol Bernard Gossiaux, Klaus Werner
Heavy-flavor azimuthal correlations of D mesons
final version of proceedings for SQM 2013, C13-07-22.1
null
10.1088/1742-6596/509/1/012047
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Observables of heavy-quark azimuthal correlations in heavy-ion collisions are a new and promising tool for the investigation of the in-medium energy loss. We explore the potential of these observables to discriminate the collisional and radiative contributions within a hybrid EPOS+MC@sHQ transport approach.
[ { "created": "Tue, 8 Oct 2013 18:31:21 GMT", "version": "v1" }, { "created": "Tue, 15 Jul 2014 17:44:25 GMT", "version": "v2" } ]
2015-06-17
[ [ "Nahrgang", "Marlene", "" ], [ "Aichelin", "Jörg", "" ], [ "Gossiaux", "Pol Bernard", "" ], [ "Werner", "Klaus", "" ] ]
Observables of heavy-quark azimuthal correlations in heavy-ion collisions are a new and promising tool for the investigation of the in-medium energy loss. We explore the potential of these observables to discriminate the collisional and radiative contributions within a hybrid EPOS+MC@sHQ transport approach.
1705.00592
Shu-Yu Ho
Shu-Yu Ho, Takashi Toma, Koji Tsumura
A Radiative Neutrino Mass Model with SIMP Dark Matter
19 pages, 8 figures, 2 tables, expanded, new appendix added, new references added, updated plots, fixed minor typos, matches journal version
JHEP 1707 (2017) 101
10.1007/JHEP07(2017)101
KUNS-2675, TUM-HEP/1082/17
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We propose the first viable radiative seesaw model, in which the neutrino masses are induced radiatively via the two-loop Feynman diagram involving Strongly Interacting Massive Particles (SIMP). The stability of SIMP dark matter (DM) is ensured by a $\mathbb{Z}_5$ discrete symmetry, through which the DM annihilation ...
[ { "created": "Mon, 1 May 2017 16:59:02 GMT", "version": "v1" }, { "created": "Thu, 27 Jul 2017 05:11:33 GMT", "version": "v2" } ]
2017-07-28
[ [ "Ho", "Shu-Yu", "" ], [ "Toma", "Takashi", "" ], [ "Tsumura", "Koji", "" ] ]
We propose the first viable radiative seesaw model, in which the neutrino masses are induced radiatively via the two-loop Feynman diagram involving Strongly Interacting Massive Particles (SIMP). The stability of SIMP dark matter (DM) is ensured by a $\mathbb{Z}_5$ discrete symmetry, through which the DM annihilation ra...
hep-ph/9912479
null
J.J.M. Verbaarschot
Chiral Symmetry and the Low-Energy Spectrum of the QCD Dirac Operator
Invited talk at XVth PANIC conference, June 10-16, Uppsala, 5 pages, Latex
Nucl.Phys. A663 (2000) 1023-1026
10.1016/S0375-9474(99)00760-5
SUNY NTG-99/49
hep-ph
null
The order parameter of the chiral phase transition is directly related to the infrared part of the spectrum of the QCD Dirac operator. This part of the spectrum follows from the low energy limit of QCD which is given by a partition function of weakly interacting Goldstone modes. We find that the slope of the Dirac sp...
[ { "created": "Wed, 22 Dec 1999 17:38:42 GMT", "version": "v1" } ]
2009-10-31
[ [ "Verbaarschot", "J. J. M.", "" ] ]
The order parameter of the chiral phase transition is directly related to the infrared part of the spectrum of the QCD Dirac operator. This part of the spectrum follows from the low energy limit of QCD which is given by a partition function of weakly interacting Goldstone modes. We find that the slope of the Dirac spec...
2402.19208
Xing-Bo Yuan
Biao-Feng Hou, Xin-Qiang Li, Meng Shen, Ya-Dong Yang, Xing-Bo Yuan
Deciphering the Belle II data on $B\to K \nu \bar\nu$ decay in the (dark) SMEFT with minimal flavour violation
51 pages, 13 figures, comments welcome; v2: discussions on $F_L$ of the $B \to K^* + \text{inv}$ decay in the DSMEFT added, errors in the $B \to V + \text{inv}$ decays for some operators involving two scalar or vector DM fields fixed, the related discussions and figures 2, 6, 7, 11 and 12 corrected, main conclu...
null
null
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
Recently, the Belle II collaboration announced the first measurement of $\mathcal B(B^+\to K^+\nu\bar\nu)$, which is found to be about $2.7\sigma$ higher than the SM prediction. We decipher the data with two new physics scenarios: the underlying $b\to s \nu\bar\nu$ transition is, besides the SM contribution, further ...
[ { "created": "Thu, 29 Feb 2024 14:37:57 GMT", "version": "v1" }, { "created": "Thu, 14 Mar 2024 15:41:19 GMT", "version": "v2" } ]
2024-03-15
[ [ "Hou", "Biao-Feng", "" ], [ "Li", "Xin-Qiang", "" ], [ "Shen", "Meng", "" ], [ "Yang", "Ya-Dong", "" ], [ "Yuan", "Xing-Bo", "" ] ]
Recently, the Belle II collaboration announced the first measurement of $\mathcal B(B^+\to K^+\nu\bar\nu)$, which is found to be about $2.7\sigma$ higher than the SM prediction. We decipher the data with two new physics scenarios: the underlying $b\to s \nu\bar\nu$ transition is, besides the SM contribution, further af...
2104.12155
Zhun Lu
Hui Li, Xiaoyu Wang, Zhun Lu
$\sin (\phi_\Lambda-\phi_S)$ azimuthal asymmetry in transversely polarized $\Lambda$ production in SIDIS within TMD factorization at EIC
11 pages, 2 figures. arXiv admin note: text overlap with arXiv:2009.07193
Phys. Rev. D 104, 034020 (2021)
10.1103/PhysRevD.104.034020
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the $\sin (\phi_\Lambda-\phi_S)$ single-spin asymmetry in the transversely polarized $\Lambda$ production in semi-inclusive deeply inelastic scattering process within the framework of the transverse momentum dependent~(TMD) factorization. The asymmetry is contributed by the convolution of the polarizin...
[ { "created": "Sun, 25 Apr 2021 13:23:31 GMT", "version": "v1" } ]
2021-08-25
[ [ "Li", "Hui", "" ], [ "Wang", "Xiaoyu", "" ], [ "Lu", "Zhun", "" ] ]
We investigate the $\sin (\phi_\Lambda-\phi_S)$ single-spin asymmetry in the transversely polarized $\Lambda$ production in semi-inclusive deeply inelastic scattering process within the framework of the transverse momentum dependent~(TMD) factorization. The asymmetry is contributed by the convolution of the polarizing ...
1205.5681
Toshihiko Ota
Shinya Kanemura, Yoshitaka Kuno, Toshihiko Ota
Search for Lepton Number Violating Charged Current Processes with Neutrino Beams
4 pages, 5 eps files
null
10.1016/j.physletb.2013.01.029
UT-HET 068; MPP-2012-89
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We propose a new idea to test a class of loop-induced neutrino mass mechanisms by searching for lepton number violating charged current processes with incident of a neutrino beam. The expected rates of these processes are estimated based on some theoretical assumptions. They turn out to be sizable so that detection o...
[ { "created": "Fri, 25 May 2012 12:39:15 GMT", "version": "v1" } ]
2015-06-05
[ [ "Kanemura", "Shinya", "" ], [ "Kuno", "Yoshitaka", "" ], [ "Ota", "Toshihiko", "" ] ]
We propose a new idea to test a class of loop-induced neutrino mass mechanisms by searching for lepton number violating charged current processes with incident of a neutrino beam. The expected rates of these processes are estimated based on some theoretical assumptions. They turn out to be sizable so that detection of ...
hep-ph/9509323
null
Edi Halyo
Gauge Coupling Unification due to Large String Threshold Corrections
14 pages, uses phyzzx.tex
null
null
WIS-95/36/AUG-PH
hep-ph
null
We show that large string threshold corrections can reconcile the string and MSSM unification scales in fermionic strings. This requires at least three moduli with large VEVs which are different from each other and MSSM states arising in an unconventional manner from the string spectrum. The former is easily achieved...
[ { "created": "Mon, 18 Sep 1995 20:45:06 GMT", "version": "v1" } ]
2007-05-23
[ [ "Halyo", "Edi", "" ] ]
We show that large string threshold corrections can reconcile the string and MSSM unification scales in fermionic strings. This requires at least three moduli with large VEVs which are different from each other and MSSM states arising in an unconventional manner from the string spectrum. The former is easily achieved b...
0710.1294
Jean-Philippe Lansberg
J.P. Lansberg, B. Pire, L. Szymanowski
Transition Distribution Amplitudes for gamma* gamma collisions
Talk given at International Conference on the Structure and Interactions of the Photon (Photon 2007), 9-13 Jul 2007, Paris, France; 4 pages, 5 figures, uses photon2007.cls (included)
Nucl.Phys.Proc.Suppl.184:239-242,2008
10.1016/j.nuclphysbps.2008.09.172
null
hep-ph hep-ex nucl-th
null
We study the exclusive production of pi-pi and rho-pi in hard gamma* gamma scattering in the forward kinematical region where the virtuality of one photon provides us with a hard scale in the process. The newly introduced concept of Transition Distribution Amplitudes (TDA) is used to perform a QCD calculation of thes...
[ { "created": "Fri, 5 Oct 2007 19:16:59 GMT", "version": "v1" } ]
2008-12-18
[ [ "Lansberg", "J. P.", "" ], [ "Pire", "B.", "" ], [ "Szymanowski", "L.", "" ] ]
We study the exclusive production of pi-pi and rho-pi in hard gamma* gamma scattering in the forward kinematical region where the virtuality of one photon provides us with a hard scale in the process. The newly introduced concept of Transition Distribution Amplitudes (TDA) is used to perform a QCD calculation of these ...
1512.04928
Simon Knapen
Simon Knapen, Tom Melia, Michele Papucci, Kathryn Zurek
Rays of light from the LHC
20 pages, 9 figures. Typos corrected, appendix A updated and references added
Phys. Rev. D 93, 075020 (2016)
10.1103/PhysRevD.93.075020
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider models for the di-photon resonance observed at ATLAS (with 3.6 fb^{-1}) and CMS (with 2.6 fb^{-1}). We find there is no conflict between the signal reported at 13 TeV, and the constraints from both experiments at 8 TeV with 20.3 fb^{-1}. We make a simple argument for why adding only one new resonance to t...
[ { "created": "Tue, 15 Dec 2015 20:44:08 GMT", "version": "v1" }, { "created": "Wed, 13 Jan 2016 22:48:04 GMT", "version": "v2" } ]
2016-04-20
[ [ "Knapen", "Simon", "" ], [ "Melia", "Tom", "" ], [ "Papucci", "Michele", "" ], [ "Zurek", "Kathryn", "" ] ]
We consider models for the di-photon resonance observed at ATLAS (with 3.6 fb^{-1}) and CMS (with 2.6 fb^{-1}). We find there is no conflict between the signal reported at 13 TeV, and the constraints from both experiments at 8 TeV with 20.3 fb^{-1}. We make a simple argument for why adding only one new resonance to the...
1910.09581
Rosa Mar\'ia Sand\'a Seoane
Ezequiel Alvarez, Aurelio Juste, Rosa Mar\'ia Sand\'a Seoane
Four-top as probe of light top-philic New Physics
33 pages, 14 figures. JHEP accepted version
null
10.1007/JHEP12(2019)080
ICAS 043/19
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the four-top final state at the LHC as a probe for New Physics (NP) effects due to new particles that couple predominantly to the top quark and whose masses are below the top-quark-pair production threshold. We consider simple NP models containing a new particle with either spin 0, spin 1, or spin 2, and fin...
[ { "created": "Mon, 21 Oct 2019 18:18:53 GMT", "version": "v1" }, { "created": "Thu, 28 Nov 2019 16:26:07 GMT", "version": "v2" } ]
2020-01-29
[ [ "Alvarez", "Ezequiel", "" ], [ "Juste", "Aurelio", "" ], [ "Seoane", "Rosa María Sandá", "" ] ]
We study the four-top final state at the LHC as a probe for New Physics (NP) effects due to new particles that couple predominantly to the top quark and whose masses are below the top-quark-pair production threshold. We consider simple NP models containing a new particle with either spin 0, spin 1, or spin 2, and find ...
0810.2199
Zhenjun Xiao
Zhen-Jun Xiao
NLO contributions in the pQCD approach
3 pages, 5 ps figures, to appear in proceedings of ICHEP-2008, Philadelphia, USA, 2008. Typoes removed
null
null
NJNU-TH-08-16
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The NLO contributions to some two-body charmless hadronic B meson decays, such as those from the QCD vertex corrections, the quark loops and the chromo-magnetic penguins, have been calculated in the pQCD factorization approach.
[ { "created": "Mon, 13 Oct 2008 12:37:34 GMT", "version": "v1" }, { "created": "Fri, 12 Dec 2008 09:45:27 GMT", "version": "v2" } ]
2008-12-12
[ [ "Xiao", "Zhen-Jun", "" ] ]
The NLO contributions to some two-body charmless hadronic B meson decays, such as those from the QCD vertex corrections, the quark loops and the chromo-magnetic penguins, have been calculated in the pQCD factorization approach.
2007.09697
Xiao-Yun Wang
Xiao-Yun Wang, Qing-Yong Lin, Hao Xu, Ya-Ping Xie, Yin Huang and Xurong Chen
Discovery potential for the LHCb fully-charm tetraquark $X(6900)$ state via $\bar{p}p$ annihilation reaction
4 pages, 2 figures
Phys. Rev. D 102, 116014 (2020)
10.1103/PhysRevD.102.116014
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
Inspired by the observation of the fully-charm tetraquark $X(6900)$ state at LHCb, the production of $X(6900)$ in $\bar{p}p\rightarrow J/\psi J/\psi $ reaction is studied within an effective Lagrangian approach and Breit-Wigner formula. The numerical results show that the cross section of $X(6900)$ at the c.m. energy...
[ { "created": "Sun, 19 Jul 2020 15:52:46 GMT", "version": "v1" }, { "created": "Wed, 22 Jul 2020 10:05:57 GMT", "version": "v2" } ]
2021-01-04
[ [ "Wang", "Xiao-Yun", "" ], [ "Lin", "Qing-Yong", "" ], [ "Xu", "Hao", "" ], [ "Xie", "Ya-Ping", "" ], [ "Huang", "Yin", "" ], [ "Chen", "Xurong", "" ] ]
Inspired by the observation of the fully-charm tetraquark $X(6900)$ state at LHCb, the production of $X(6900)$ in $\bar{p}p\rightarrow J/\psi J/\psi $ reaction is studied within an effective Lagrangian approach and Breit-Wigner formula. The numerical results show that the cross section of $X(6900)$ at the c.m. energy o...
hep-ph/9804399
Vladimir V. Vereshagin
Alexander V.Vereshagin, Vladimir V.Vereshagin (St-Petersburg State University)
Effective theories with maximal analyticity
33 pages, 2 figures, 1 table, LATEX
Phys.Rev. D59 (1999) 016002
10.1103/PhysRevD.59.016002
SPBU-IP-98-9
hep-ph
null
In this paper (second in the series) we study the properties of tree-level binary amplitudes of the infinite-component effective field theory of strong interaction obeying the requirements of quark-hadron duality and maximal analyticity. In contrast to the previous paper, here we derive the results following from les...
[ { "created": "Sat, 25 Apr 1998 13:17:49 GMT", "version": "v1" } ]
2009-10-31
[ [ "Vereshagin", "Alexander V.", "", "St-Petersburg State\n University" ], [ "Vereshagin", "Vladimir V.", "", "St-Petersburg State\n University" ] ]
In this paper (second in the series) we study the properties of tree-level binary amplitudes of the infinite-component effective field theory of strong interaction obeying the requirements of quark-hadron duality and maximal analyticity. In contrast to the previous paper, here we derive the results following from less ...
1309.1657
Florian Senzel
Florian Senzel, Oliver Fochler, Jan Uphoff, Zhe Xu, Carsten Greiner
Influence of multiple in-medium scattering processes on the momentum imbalance of reconstructed di-jets
14 pages, 10 figures, Major revision and recalculation of results
J.Phys. G42 (2015) no.11, 115104
10.1088/0954-3899/42/11/115104
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Experimental data measured in sqrt(s)=2.76 TeV Pb+Pb collisions at the LHC show a significant enhancement of events with an unbalanced pair of reconstructed jet momenta in comparison with p+p collisions. This enhancement of momentum imbalance is supposed to be caused by the different momentum loss of the initial back...
[ { "created": "Fri, 6 Sep 2013 14:42:38 GMT", "version": "v1" }, { "created": "Fri, 24 Jul 2015 13:51:51 GMT", "version": "v2" } ]
2016-11-28
[ [ "Senzel", "Florian", "" ], [ "Fochler", "Oliver", "" ], [ "Uphoff", "Jan", "" ], [ "Xu", "Zhe", "" ], [ "Greiner", "Carsten", "" ] ]
Experimental data measured in sqrt(s)=2.76 TeV Pb+Pb collisions at the LHC show a significant enhancement of events with an unbalanced pair of reconstructed jet momenta in comparison with p+p collisions. This enhancement of momentum imbalance is supposed to be caused by the different momentum loss of the initial back-t...
0711.1795
Jiri Chyla
Jiri Chyla
Sense and Nonsense on Parton Distribution functions of the Photon
Talk given at the International Symposium PHOTON 2007, Paris, July 2007, 4 pages and 1 figure, references corrected
Nucl.Phys.Proc.Suppl.184:23-26,2008
10.1016/j.nuclphysbps.2008.09.128
null
hep-ph
null
The organization of finite order QCD approximations to $F_2^{\gamma}(x,Q^2)$ based on the separation of pure QED contribution from those of genuine QCD nature is discussed.
[ { "created": "Mon, 12 Nov 2007 16:01:07 GMT", "version": "v1" }, { "created": "Tue, 11 Dec 2007 18:23:49 GMT", "version": "v2" } ]
2009-02-12
[ [ "Chyla", "Jiri", "" ] ]
The organization of finite order QCD approximations to $F_2^{\gamma}(x,Q^2)$ based on the separation of pure QED contribution from those of genuine QCD nature is discussed.
1009.5377
Stefano Profumo
Stefano Profumo, Lorenzo Ubaldi and Carroll Wainwright
Singlet Scalar Dark Matter: monochromatic gamma rays and metastable vacua
21 pages, 6 figures; references added, minor additions to text and figures, version accepted for publication in Phys. Rev. D
Phys.Rev.D82:123514,2010
10.1103/PhysRevD.82.123514
null
hep-ph astro-ph.HE
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We calculate the pair-annihilation cross section of real scalar singlet dark matter into two mono-energetic photons. We derive constraints on the theory parameter space from the Fermi limits on gamma-ray lines, and we compare with current limits from direct dark matter detection. We show that the new limits, albeit t...
[ { "created": "Mon, 27 Sep 2010 20:00:05 GMT", "version": "v1" }, { "created": "Wed, 17 Nov 2010 21:34:20 GMT", "version": "v2" } ]
2010-12-24
[ [ "Profumo", "Stefano", "" ], [ "Ubaldi", "Lorenzo", "" ], [ "Wainwright", "Carroll", "" ] ]
We calculate the pair-annihilation cross section of real scalar singlet dark matter into two mono-energetic photons. We derive constraints on the theory parameter space from the Fermi limits on gamma-ray lines, and we compare with current limits from direct dark matter detection. We show that the new limits, albeit typ...
2012.13947
Gilbert Moultaka
Gilbert Moultaka and Michel C. Peyran\`ere
Vacuum Stability Conditions for Higgs Potentials with $SU(2)_L$ Triplets
95 pages, 15 figures, 1 table, added comments in the introduction, 2 footnotes, a new paragraph in section V, new references, to appear in Physical Review D
Phys. Rev. D 103, 115006 (2021)
10.1103/PhysRevD.103.115006
null
hep-ph math-ph math.MP
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Tree-level dynamical stability of scalar field potentials in renormalizable theories can in principle be expressed in terms of positivity conditions on quartic polynomial structures. However, these conditions cannot always be cast in a fully analytical resolved form, involving only the couplings and being valid for a...
[ { "created": "Sun, 27 Dec 2020 14:17:46 GMT", "version": "v1" }, { "created": "Thu, 4 Mar 2021 07:25:09 GMT", "version": "v2" } ]
2021-06-16
[ [ "Moultaka", "Gilbert", "" ], [ "Peyranère", "Michel C.", "" ] ]
Tree-level dynamical stability of scalar field potentials in renormalizable theories can in principle be expressed in terms of positivity conditions on quartic polynomial structures. However, these conditions cannot always be cast in a fully analytical resolved form, involving only the couplings and being valid for all...
2110.01356
Le Tho Hue
L. T. Hue, A. E. C\'arcamo Hern\'andez, H. N. Long, and T. T.Hong
Heavy singly charged Higgs bosons and inverse seesaw neutrinos as origins of large $(g-2)_{e,\mu}$ in two higgs doublet models
30 pages, 9 figures. Numerical results were corrected. New references were added. Version accepted for publication in NPB
null
10.1016/j.nuclphysb.2022.115962
null
hep-ph
http://creativecommons.org/publicdomain/zero/1.0/
We show that simple extensions of two Higgs doublet models consisting of new heavy neutrinos and a singly charged Higgs boson singlet can successfully explain the experimental data on muon and electron anomalous magnetic moments thanks to large chirally-enhanced one-loop level contributions. These contributions arise...
[ { "created": "Mon, 4 Oct 2021 12:09:40 GMT", "version": "v1" }, { "created": "Wed, 21 Sep 2022 03:16:50 GMT", "version": "v2" } ]
2022-09-22
[ [ "Hue", "L. T.", "" ], [ "Hernández", "A. E. Cárcamo", "" ], [ "Long", "H. N.", "" ], [ "Hong", "T. T.", "" ] ]
We show that simple extensions of two Higgs doublet models consisting of new heavy neutrinos and a singly charged Higgs boson singlet can successfully explain the experimental data on muon and electron anomalous magnetic moments thanks to large chirally-enhanced one-loop level contributions. These contributions arise f...
2306.17520
Michele Tammaro
Jernej F. Kamenik, Arman Korajac, Manuel Szewc, Michele Tammaro, Jure Zupan
Flavor violating Higgs and $Z$ decays at FCC-ee
22 pages, 15 figures
null
10.1103/PhysRevD.109.L011301
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
Recent advances in $b$, $c$, and $s$ quark tagging coupled with novel statistical analysis techniques will allow future high energy and high statistics electron-positron colliders, such as the FCC-ee, to place phenomenologically relevant bounds on flavor violating Higgs and $Z$ decays to quarks. We assess the FCC-ee ...
[ { "created": "Fri, 30 Jun 2023 10:16:59 GMT", "version": "v1" }, { "created": "Thu, 11 Jul 2024 07:44:11 GMT", "version": "v2" } ]
2024-07-12
[ [ "Kamenik", "Jernej F.", "" ], [ "Korajac", "Arman", "" ], [ "Szewc", "Manuel", "" ], [ "Tammaro", "Michele", "" ], [ "Zupan", "Jure", "" ] ]
Recent advances in $b$, $c$, and $s$ quark tagging coupled with novel statistical analysis techniques will allow future high energy and high statistics electron-positron colliders, such as the FCC-ee, to place phenomenologically relevant bounds on flavor violating Higgs and $Z$ decays to quarks. We assess the FCC-ee re...
hep-ph/0312275
H. Caldas
Heron Caldas
Cold asymmetrical fermion superfluids
21 pages, 5 figures, RevTex, typos corrected, introduction improved, accepted for publication in PRA
Phys.Rev.A69:063602,2004
10.1103/PhysRevA.69.063602
null
hep-ph cond-mat.supr-con
null
In this work we investigate the general properties and the ground state of an asymmetrical dilute gas of cold fermionic atoms, formed by two particle species having different densities. We have show in a recent paper, that a mixed phase composed of normal and superfluid components is the energetically favored ground ...
[ { "created": "Fri, 19 Dec 2003 05:47:30 GMT", "version": "v1" }, { "created": "Sat, 27 Mar 2004 02:26:10 GMT", "version": "v2" } ]
2014-11-17
[ [ "Caldas", "Heron", "" ] ]
In this work we investigate the general properties and the ground state of an asymmetrical dilute gas of cold fermionic atoms, formed by two particle species having different densities. We have show in a recent paper, that a mixed phase composed of normal and superfluid components is the energetically favored ground st...
hep-ph/9803320
Tracas Nicholas
G.K. Leontaris and N.D. Tracas
Lepton Flavour Violation in Unified Models with U(1)-Family Symmetries
14 pages, 1 figure included in the ps file, uses epsfig.sty
Phys.Lett. B431 (1998) 90-97
10.1016/S0370-2693(98)00474-2
IOA-TH/98-03, NTUA-70/98
hep-ph
null
Lepton flavour non-conserving processes are examined in the context of unified models with U(1)-family symmetries which reproduce successfully the low-energy hierarchy of the fermion mass spectrum and the Kobayashi - Maskawa mixing. These models usually imply mixing effects in the supersymmetric scalar sector. We con...
[ { "created": "Thu, 12 Mar 1998 15:02:14 GMT", "version": "v1" } ]
2009-10-31
[ [ "Leontaris", "G. K.", "" ], [ "Tracas", "N. D.", "" ] ]
Lepton flavour non-conserving processes are examined in the context of unified models with U(1)-family symmetries which reproduce successfully the low-energy hierarchy of the fermion mass spectrum and the Kobayashi - Maskawa mixing. These models usually imply mixing effects in the supersymmetric scalar sector. We const...
hep-ph/0002052
Arnd Leike
Stephen Godfrey, Pat Kalyniak, Basim Kamal, Arnd Leike
Constraints on Extra Gauge Bosons in e gamma Collisions
6 pages Latex, 5 figures included by epsf, uses e-e-ijmpa.sty and citepunct.sty (included)
Int.J.Mod.Phys. A15 (2000) 2623
10.1142/S0217751X00002706
LMU 01/00
hep-ph
null
We investigate the sensitivity of e- gamma ---> nu_e nu_mu(bar) mu- to extra charged gauge bosons. The sensitivity is much below that of e-e+ ---> nu nu(bar) gamma. We conclude that e- gamma ---> d u(bar) nu_e and e- gamma ---> f f(bar) e- are also inferior to e+e- collisions in setting bounds on extra charged and ne...
[ { "created": "Fri, 4 Feb 2000 15:47:08 GMT", "version": "v1" } ]
2015-06-25
[ [ "Godfrey", "Stephen", "" ], [ "Kalyniak", "Pat", "" ], [ "Kamal", "Basim", "" ], [ "Leike", "Arnd", "" ] ]
We investigate the sensitivity of e- gamma ---> nu_e nu_mu(bar) mu- to extra charged gauge bosons. The sensitivity is much below that of e-e+ ---> nu nu(bar) gamma. We conclude that e- gamma ---> d u(bar) nu_e and e- gamma ---> f f(bar) e- are also inferior to e+e- collisions in setting bounds on extra charged and neut...
0709.0100
Oleg Selyugin
O.V. Selyugin, J.-R. Cudell
Saturation effects in elastic scattering at the LHC
6 pages, 4 figures, talk presented at EDS07
null
null
null
hep-ph
null
The problems linked to the extraction of the basic parameters of the hadron elastic scattering amplitude at the LHC are explored. The impact of the Black Disk Limit (BDL)$-$ which constitutes a new regime of the scattering processes - on the determination of these values is examined.
[ { "created": "Sun, 2 Sep 2007 10:22:14 GMT", "version": "v1" } ]
2007-09-04
[ [ "Selyugin", "O. V.", "" ], [ "Cudell", "J. -R.", "" ] ]
The problems linked to the extraction of the basic parameters of the hadron elastic scattering amplitude at the LHC are explored. The impact of the Black Disk Limit (BDL)$-$ which constitutes a new regime of the scattering processes - on the determination of these values is examined.
2008.09652
Gauthier Durieux
Gauthier Durieux, Teppei Kitahara, Camila S. Machado, Yael Shadmi, Yaniv Weiss
Constructing massive on-shell contact terms
27 pages, 1 figure and 5 tables; v2: vvvs counting corrected
JHEP 12 (2020) 175
10.1007/JHEP12(2020)175
MITP/20-046
hep-ph hep-th
http://creativecommons.org/licenses/by/4.0/
The purely on-shell approach to effective field theories requires the construction of independent contact terms. Employing the little-group-covariant massive-spinor formalism, we present the first systematic derivation of independent four-point contact terms involving massive scalars, spin-1/2 fermions, and vectors. ...
[ { "created": "Fri, 21 Aug 2020 18:59:10 GMT", "version": "v1" }, { "created": "Thu, 20 Oct 2022 08:40:01 GMT", "version": "v2" } ]
2022-10-21
[ [ "Durieux", "Gauthier", "" ], [ "Kitahara", "Teppei", "" ], [ "Machado", "Camila S.", "" ], [ "Shadmi", "Yael", "" ], [ "Weiss", "Yaniv", "" ] ]
The purely on-shell approach to effective field theories requires the construction of independent contact terms. Employing the little-group-covariant massive-spinor formalism, we present the first systematic derivation of independent four-point contact terms involving massive scalars, spin-1/2 fermions, and vectors. In...
1011.2964
Jonathan Roberts
G. R. Farrar, R. Mackeprang, D. Milstead, J. P. Roberts
Limit on the mass of a long-lived or stable gluino
15 pages, 5 figures, accepted for publication in JHEP
JHEP 1102:018,2011
10.1007/JHEP02(2011)018
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We reinterpret the generic CDF charged massive particle limit to obtain a limit on the mass of a stable or long-lived gluino. Various sources of uncertainty are examined. The $R$-hadron spectrum and scattering cross sections are modeled based on known low-energy hadron physics and the resultant uncertainties are quan...
[ { "created": "Fri, 12 Nov 2010 15:56:23 GMT", "version": "v1" }, { "created": "Sun, 23 Jan 2011 18:58:07 GMT", "version": "v2" } ]
2015-03-17
[ [ "Farrar", "G. R.", "" ], [ "Mackeprang", "R.", "" ], [ "Milstead", "D.", "" ], [ "Roberts", "J. P.", "" ] ]
We reinterpret the generic CDF charged massive particle limit to obtain a limit on the mass of a stable or long-lived gluino. Various sources of uncertainty are examined. The $R$-hadron spectrum and scattering cross sections are modeled based on known low-energy hadron physics and the resultant uncertainties are quanti...
1208.2458
Vivek Tiwari Kumar
Vivek Kumar Tiwari (Department of Physics, University of Allahabad, Allahabad, India)
Exploring criticality in the QCD-like two quark flavour models
19 pages with 20 Figures
null
10.1103/PhysRevD.86.094032
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The critical end-point (CEP) and critical behaviour in its vicinity, has been explored in the two flavour effective chiral models with and without the presence of effective Polyakov loop potential.The tricritical point (TCP) in the massless chiral limit has been located on the phase diagram in the \mu andT plane for ...
[ { "created": "Sun, 12 Aug 2012 19:57:15 GMT", "version": "v1" } ]
2013-05-30
[ [ "Tiwari", "Vivek Kumar", "", "Department of Physics, University of Allahabad,\n Allahabad, India" ] ]
The critical end-point (CEP) and critical behaviour in its vicinity, has been explored in the two flavour effective chiral models with and without the presence of effective Polyakov loop potential.The tricritical point (TCP) in the massless chiral limit has been located on the phase diagram in the \mu andT plane for th...
hep-ph/0607149
Joseph D. Lykken
Joseph D. Lykken
Moriond Electroweak 2006: Theory Summary
12 pages, 5 figures
null
null
FERMILAB-CONF-06-239-T
hep-ph
null
A concise look at the big picture of particle physics, including the status of the Standard Model, neutrinos, supersymmetry, extra dimensions and cosmology. Based upon the theoretical summary presented at the XLIst Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, 11-18 March 2006.
[ { "created": "Thu, 13 Jul 2006 13:11:51 GMT", "version": "v1" } ]
2007-05-23
[ [ "Lykken", "Joseph D.", "" ] ]
A concise look at the big picture of particle physics, including the status of the Standard Model, neutrinos, supersymmetry, extra dimensions and cosmology. Based upon the theoretical summary presented at the XLIst Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, 11-18 March 2006.
0706.0017
Davison E. Soper
Zoltan Nagy and Davison E. Soper
Parton showers with quantum interference
83 pages with 10 figures; revised version is close to published version
JHEP 0709:114,2007
10.1088/1126-6708/2007/09/114
CERN-PH-TH/2007-082
hep-ph
null
We specify recursive equations that could be used to generate a lowest order parton shower for hard scattering in hadron-hadron collisions. The formalism is based on the factorization soft and collinear interactions from relatively harder interactions in QCD amplitudes. It incorporates quantum interference between di...
[ { "created": "Fri, 1 Jun 2007 18:08:38 GMT", "version": "v1" }, { "created": "Tue, 2 Oct 2007 23:48:59 GMT", "version": "v2" } ]
2009-04-22
[ [ "Nagy", "Zoltan", "" ], [ "Soper", "Davison E.", "" ] ]
We specify recursive equations that could be used to generate a lowest order parton shower for hard scattering in hadron-hadron collisions. The formalism is based on the factorization soft and collinear interactions from relatively harder interactions in QCD amplitudes. It incorporates quantum interference between diff...
1812.07181
Yucheng Qiu
Yu-Cheng Qiu and S.-H. Henry Tye
Role of Bloch Waves in baryon-number violating processes
13 pages, 11 figures
Phys. Rev. D 100, 033006 (2019)
10.1103/PhysRevD.100.033006
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In the Bloch-wave approach to estimate the baryon-number-violating scattering cross section in the standard electroweak theory in the laboratory, we clarify the relation between the single sphaleron barrier and multiple (near periodic) sphaleron barrier cases. We explain how a realistic consideration modifies/correct...
[ { "created": "Tue, 18 Dec 2018 05:42:18 GMT", "version": "v1" }, { "created": "Tue, 5 Mar 2019 09:54:48 GMT", "version": "v2" }, { "created": "Thu, 29 Aug 2019 11:22:53 GMT", "version": "v3" } ]
2019-08-30
[ [ "Qiu", "Yu-Cheng", "" ], [ "Tye", "S. -H. Henry", "" ] ]
In the Bloch-wave approach to estimate the baryon-number-violating scattering cross section in the standard electroweak theory in the laboratory, we clarify the relation between the single sphaleron barrier and multiple (near periodic) sphaleron barrier cases. We explain how a realistic consideration modifies/corrects ...
1404.6204
Piotr Kotko
A. van Hameren, P. Kotko, K. Kutak, S. Sapeta
Small-$x$ dynamics in forward-central dijet decorrelations at the LHC
10 pages, 4 figures; legends of the plots corrected, references added, minor refinements
null
10.1016/j.physletb.2014.09.005
IFJPAN-IV-2014-6, CERN-PH-TH-2014-070
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We provide a description, within the High Energy Factorization formalism, of central-forward dijet decorrelation data measured by the CMS experiment and the predictions for nuclear modification ratio~$R_{pA}$ in p+Pb collisions. In our study, we use the unintegrated gluon density derived from the BFKL and BK equation...
[ { "created": "Thu, 24 Apr 2014 17:58:31 GMT", "version": "v1" }, { "created": "Wed, 7 May 2014 16:38:36 GMT", "version": "v2" } ]
2015-06-19
[ [ "van Hameren", "A.", "" ], [ "Kotko", "P.", "" ], [ "Kutak", "K.", "" ], [ "Sapeta", "S.", "" ] ]
We provide a description, within the High Energy Factorization formalism, of central-forward dijet decorrelation data measured by the CMS experiment and the predictions for nuclear modification ratio~$R_{pA}$ in p+Pb collisions. In our study, we use the unintegrated gluon density derived from the BFKL and BK equations ...