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0910.1936
Satyanarayan Nandi
S. Nandi
Fermion mass hierarchy and new physics at the TeV scale
10 pages, 2 figures; Plenary talk presented at the 17th International Conference on Supersymmetry and the Unification of Fundamental Interactions (SUSY09) at Northeastern University, Boston, MA, 5-10 June, 2009
AIP Conf.Proc.1200:93-102,2010
10.1063/1.3327768
OSU-HEP-09-07
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this talk, I present a new framework to understand the long-standing fermion mass hierarchy puzzle. We extend the Standard Model gauge symmetry by an extra local U(1)_S symmetry, broken spontaneously at the electroweak scale. All the SM particles are singlet with respect to this U(1)_S. We also introduce additiona...
[ { "created": "Sat, 10 Oct 2009 18:40:29 GMT", "version": "v1" } ]
2015-05-14
[ [ "Nandi", "S.", "" ] ]
In this talk, I present a new framework to understand the long-standing fermion mass hierarchy puzzle. We extend the Standard Model gauge symmetry by an extra local U(1)_S symmetry, broken spontaneously at the electroweak scale. All the SM particles are singlet with respect to this U(1)_S. We also introduce additional ...
0804.4518
Robert Foot
R. Foot
Mirror dark matter and the new DAMA/LIBRA results: A simple explanation for a beautiful experiment
about 20 pages, 6 figures
Phys.Rev.D78:043529,2008
10.1103/PhysRevD.78.043529
null
hep-ph astro-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Recently, the DAMA/LIBRA experiment has convincingly confirmed the DAMA/NaI annual modulation signal, experimentally demonstrating the existence of non-baryonic dark matter in the halo of our galaxy. Meanwhile, in another part of town, other experiments such as CDMS and XENON10 have not detected any evidence for dark...
[ { "created": "Tue, 29 Apr 2008 06:27:18 GMT", "version": "v1" }, { "created": "Mon, 14 Jul 2008 00:56:19 GMT", "version": "v2" } ]
2008-11-26
[ [ "Foot", "R.", "" ] ]
Recently, the DAMA/LIBRA experiment has convincingly confirmed the DAMA/NaI annual modulation signal, experimentally demonstrating the existence of non-baryonic dark matter in the halo of our galaxy. Meanwhile, in another part of town, other experiments such as CDMS and XENON10 have not detected any evidence for dark m...
hep-ph/0005206
Paul H. Frampton
Paul H. Frampton
Minimal Model for Neutrino Masses and Mixings
5 pages LaTeX. Contribution to Second Tropical Conference on Particle Physics and Cosmology. Puerto Rico. May 1-5, 2000
null
10.1063/1.1328877
IFP-785-UNC
hep-ph
null
Working in the framework of three chiral neutrinos with Majorana masses, we investigate a scenario first realized in an explicit model by Zee: that the neutrino mass matrix is strictly off-diagonal in the flavor basis, with all its diagonal entries precisely zero. This CP-conserving ansatz leads to two relations amon...
[ { "created": "Sun, 21 May 2000 20:56:13 GMT", "version": "v1" } ]
2009-10-31
[ [ "Frampton", "Paul H.", "" ] ]
Working in the framework of three chiral neutrinos with Majorana masses, we investigate a scenario first realized in an explicit model by Zee: that the neutrino mass matrix is strictly off-diagonal in the flavor basis, with all its diagonal entries precisely zero. This CP-conserving ansatz leads to two relations among ...
1301.4389
Giulia Ricciardi
Giulia Ricciardi
Semileptonic B decays
8 pages. In proceedings of the Conference "Xth Quark Confinement and the Hadron Spectrum", Munich, 8-12 October 2012
PoS ConfinementX (2012) 145
null
DSF-1-2013
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We review recent progress in exclusive B --> D^(*) and inclusive B --> X(u) semileptonic B decays
[ { "created": "Fri, 18 Jan 2013 14:24:26 GMT", "version": "v1" } ]
2013-09-19
[ [ "Ricciardi", "Giulia", "" ] ]
We review recent progress in exclusive B --> D^(*) and inclusive B --> X(u) semileptonic B decays
1703.05594
Chitta Ranjan Das
B.G. Sidharth, C.R. Das, L.V. Laperashvili and H.B. Nielsen
Black Holes-Hedgehogs and Strings as Defects of the Universal Vacua
32 pages, 3 figures. arXiv admin note: text overlap with arXiv:1605.01169; text overlap with arXiv:1002.4275, arXiv:hep-lat/0512030 by other authors
null
null
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In the present paper, assuming the Multiple Point Principle (MPP) as a new law of Nature, we considered the existence of the two degenerate vacua of the Universe: a) the first Electroweak (EW) vacuum at $v_1\approx 246$ GeV -- "true vacuum", and b) the second Planck scale "false vacuum" at $v_2 \sim 10^{18}$ GeV. In ...
[ { "created": "Wed, 15 Mar 2017 08:47:01 GMT", "version": "v1" }, { "created": "Fri, 22 Sep 2017 16:41:21 GMT", "version": "v2" } ]
2017-09-26
[ [ "Sidharth", "B. G.", "" ], [ "Das", "C. R.", "" ], [ "Laperashvili", "L. V.", "" ], [ "Nielsen", "H. B.", "" ] ]
In the present paper, assuming the Multiple Point Principle (MPP) as a new law of Nature, we considered the existence of the two degenerate vacua of the Universe: a) the first Electroweak (EW) vacuum at $v_1\approx 246$ GeV -- "true vacuum", and b) the second Planck scale "false vacuum" at $v_2 \sim 10^{18}$ GeV. In th...
hep-ph/0304210
P. Q. Hung
S.I. Alekhin (IHEP, Serpukhov), S.A. Kulagin (INR, Moscow), S. Liuti (University of Virginia)
Isospin Dependence of Power Corrections in Deep Inelastic Scattering
33 pages, 16 figures
Phys.Rev.D69:114009,2004
10.1103/PhysRevD.69.114009
null
hep-ph
null
We present results of a perturbative QCD analysis of deep inelastic measurements of both the deuteron and proton structure functions. We evaluate the theoretical uncertainty associated to nuclear effects in the deuteron, and we extract simultaneously the isospin depedendence of: i)the higher twists terms; ii) the rat...
[ { "created": "Tue, 22 Apr 2003 20:07:32 GMT", "version": "v1" } ]
2014-11-17
[ [ "Alekhin", "S. I.", "", "IHEP, Serpukhov" ], [ "Kulagin", "S. A.", "", "INR, Moscow" ], [ "Liuti", "S.", "", "University of Virginia" ] ]
We present results of a perturbative QCD analysis of deep inelastic measurements of both the deuteron and proton structure functions. We evaluate the theoretical uncertainty associated to nuclear effects in the deuteron, and we extract simultaneously the isospin depedendence of: i)the higher twists terms; ii) the ratio...
hep-ph/9612265
Isi Dunietz
Yakov Azimov (FNAL, PNPI), Isard Dunietz (FNAL)
A Way to Measure Very Large \Delta m for B_s Mesons
8 pages, LATEX, no figures
Phys.Lett.B395:334-338,1997
10.1016/S0370-2693(97)00065-8
FERMILAB-Pub-96/435-T
hep-ph
null
While present vertex technology cannot measure x_s much beyond 20, the Standard Model accomodates significantly larger x_s values. This note presents a method to determine very large x_s with present technology. The determination is based upon subtle coherence effects between initial B_s mesons and daughter neutral k...
[ { "created": "Thu, 5 Dec 1996 17:48:28 GMT", "version": "v1" } ]
2008-11-26
[ [ "Azimov", "Yakov", "", "FNAL, PNPI" ], [ "Dunietz", "Isard", "", "FNAL" ] ]
While present vertex technology cannot measure x_s much beyond 20, the Standard Model accomodates significantly larger x_s values. This note presents a method to determine very large x_s with present technology. The determination is based upon subtle coherence effects between initial B_s mesons and daughter neutral kao...
2012.08368
Elvio Di Salvo
Elvio Di Salvo, Ziad Jean Ajaltouni
Parametrizations of the Spin Density Matrix
19 pages
null
10.1016/j.aop.2021.168448
null
hep-ph
http://creativecommons.org/publicdomain/zero/1.0/
We propose for the spin density matrix two parametrizations which automatically fulfil the non-negativity conditions, without setting any bound on the parameters. The first one relies on a theorem, that we prove, and it is rather simple and easily adaptable to some specific reactions, where, for example, parity is co...
[ { "created": "Tue, 15 Dec 2020 15:34:31 GMT", "version": "v1" } ]
2021-04-28
[ [ "Di Salvo", "Elvio", "" ], [ "Ajaltouni", "Ziad Jean", "" ] ]
We propose for the spin density matrix two parametrizations which automatically fulfil the non-negativity conditions, without setting any bound on the parameters. The first one relies on a theorem, that we prove, and it is rather simple and easily adaptable to some specific reactions, where, for example, parity is cons...
0911.5370
Douglas Gingrich Mr.
Douglas M. Gingrich
Monte Carlo event generator for black hole production and decay in proton-proton collisions
updated to version 1.03, now uses pythia 8.150, may not be backward compatable with older versions of pythia8
Comput.Phys.Commun.181:1917-1924,2010
10.1016/j.cpc.2010.07.027
null
hep-ph gr-qc hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We describe the Monte Carlo event generator for quantum black hole production and decay in proton-proton collisions -- QBH version 1.03.
[ { "created": "Sat, 28 Nov 2009 02:00:28 GMT", "version": "v1" }, { "created": "Fri, 4 Dec 2009 12:15:04 GMT", "version": "v2" }, { "created": "Fri, 9 Jul 2010 19:39:22 GMT", "version": "v3" }, { "created": "Sat, 21 May 2011 02:41:12 GMT", "version": "v4" } ]
2011-05-24
[ [ "Gingrich", "Douglas M.", "" ] ]
We describe the Monte Carlo event generator for quantum black hole production and decay in proton-proton collisions -- QBH version 1.03.
2304.09883
Benjamin Fuks
Luc Darm\'e, C\'eline Degrande, Claude Duhr, Benjamin Fuks, Mark Goodsell, Gudrun Heinrich, Valentin Hirschi, Stefan H\"oche, Marius H\"ofer, Joshua Isaacson, Olivier Mattelaer, Thorsten Ohl, Davide Pagani, J\"urgen Reuter, Peter Richardson, Steffen Schumann, Hua-Sheng Shao, Frank Siegert, Marco Zaro
UFO 2.0 -- The Universal Feynman Output format
28 pages; version accepted by EPJC
Eur.Phys.J.C 83 (2023) 631
10.1140/epjc/s10052-023-11780-9
BONN-TH-2023-03, DESY-23-051, FERMILAB-PUB-23-138-T, KA-TP-06-2023, MCNET-23-06, P3H-23-023, TIF-UNIMI-2023-11
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present an update of the Universal FeynRules Output model format, commonly known as the UFO format, that is used by several automated matrix-element generators and high-energy physics software. We detail different features that have been proposed as extensions of the initial format during the last ten years, and c...
[ { "created": "Wed, 19 Apr 2023 18:00:00 GMT", "version": "v1" }, { "created": "Thu, 13 Jul 2023 13:54:13 GMT", "version": "v2" } ]
2023-07-19
[ [ "Darmé", "Luc", "" ], [ "Degrande", "Céline", "" ], [ "Duhr", "Claude", "" ], [ "Fuks", "Benjamin", "" ], [ "Goodsell", "Mark", "" ], [ "Heinrich", "Gudrun", "" ], [ "Hirschi", "Valentin", "" ], [ "...
We present an update of the Universal FeynRules Output model format, commonly known as the UFO format, that is used by several automated matrix-element generators and high-energy physics software. We detail different features that have been proposed as extensions of the initial format during the last ten years, and col...
hep-ph/9512281
null
Edmond L. Berger, Xiaofeng Guo and Jianwei Qiu
Breakdown of Conventional Factorization for Isolated Photon Cross Sections
11 pages, RevTex, 1 figure in postscript
Phys.Rev.Lett. 76 (1996) 2234-2237
10.1103/PhysRevLett.76.2234
Argonne report: ANL-HEP-PR-95-88
hep-ph
null
Using $e^+e^-\rightarrow\gamma + X$ as an example, we show that the conventional factorization theorem in perturbative quantum chromodynamics breaks down for isolated photon cross sections in a well defined part of phase space. Implications and physical consequences are discussed.
[ { "created": "Mon, 11 Dec 1995 22:48:41 GMT", "version": "v1" } ]
2009-10-28
[ [ "Berger", "Edmond L.", "" ], [ "Guo", "Xiaofeng", "" ], [ "Qiu", "Jianwei", "" ] ]
Using $e^+e^-\rightarrow\gamma + X$ as an example, we show that the conventional factorization theorem in perturbative quantum chromodynamics breaks down for isolated photon cross sections in a well defined part of phase space. Implications and physical consequences are discussed.
1005.3106
Oram Gedalia
Oram Gedalia and Gilad Perez
TASI 2009 Lectures - Flavor Physics
Lectures from the 2009 Theoretical Advanced Study Institute at Univ. of Colorado, Boulder (67 pages, 14 figures)
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The standard model picture of flavor and CP violation is now experimentally verified, hence strong bounds on the flavor structure of new physics follow. We begin by discussing in detail the unique way that flavor conversion and CP violation arise in the standard model. The description provided is based on a spurion, ...
[ { "created": "Tue, 18 May 2010 05:40:02 GMT", "version": "v1" } ]
2010-05-19
[ [ "Gedalia", "Oram", "" ], [ "Perez", "Gilad", "" ] ]
The standard model picture of flavor and CP violation is now experimentally verified, hence strong bounds on the flavor structure of new physics follow. We begin by discussing in detail the unique way that flavor conversion and CP violation arise in the standard model. The description provided is based on a spurion, sy...
2010.15431
En Wang
En Wang, Hong-Shen Li, Wei-Hong Liang, and Eulogio Oset
Analysis of the $ \boldsymbol{\gamma\gamma \to D\bar D}$ reaction and the $D\bar{D}$ bound state
9 pages, 7 figures, and 1 table
Phys. Rev. D 103, 054008 (2021)
10.1103/PhysRevD.103.054008
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this work, we investigate the reaction of $\gamma\gamma \to D\bar{D}$, taking into account the s-wave $D\bar{D}$ final state interaction. By fitting to the $D\bar{D}$ invariant mass distributions measured by the Belle and BaBar Collaborations, we obtain a good reproduction of the data by means of a $D\bar{D}$ ampl...
[ { "created": "Thu, 29 Oct 2020 09:11:15 GMT", "version": "v1" }, { "created": "Wed, 10 Mar 2021 02:09:41 GMT", "version": "v2" } ]
2021-03-17
[ [ "Wang", "En", "" ], [ "Li", "Hong-Shen", "" ], [ "Liang", "Wei-Hong", "" ], [ "Oset", "Eulogio", "" ] ]
In this work, we investigate the reaction of $\gamma\gamma \to D\bar{D}$, taking into account the s-wave $D\bar{D}$ final state interaction. By fitting to the $D\bar{D}$ invariant mass distributions measured by the Belle and BaBar Collaborations, we obtain a good reproduction of the data by means of a $D\bar{D}$ amplit...
1010.5522
LuXin Liu
A. S. Cornell and Lu-Xin Liu
Evolution of the CKM Matrix in the Universal Extra Dimension Model
10 pages, 4 figures
Phys.Rev.D83:033005,2011
10.1103/PhysRevD.83.033005
WITS-CTP-58
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The evolution of the Cabibbo-Kobayashi-Maskawa matrix and the quark Yukawa couplings is performed for the one-loop renormalization group equations in the universal extra dimension model. It is found that the evolution of mixing angles and the CP violation measure J may rapidly vary in the presence of the Kaluza-Klein...
[ { "created": "Tue, 26 Oct 2010 21:07:41 GMT", "version": "v1" }, { "created": "Sun, 23 Jan 2011 21:09:19 GMT", "version": "v2" } ]
2015-03-17
[ [ "Cornell", "A. S.", "" ], [ "Liu", "Lu-Xin", "" ] ]
The evolution of the Cabibbo-Kobayashi-Maskawa matrix and the quark Yukawa couplings is performed for the one-loop renormalization group equations in the universal extra dimension model. It is found that the evolution of mixing angles and the CP violation measure J may rapidly vary in the presence of the Kaluza-Klein m...
2107.08503
Mikhail Galynskii
M.V. Galynskii
On the Transfer of Polarization from the Initial to the Final Proton in the Elastic Process $ e \vec {p} \to e \vec {p}$
V2: A missed word in the abstract is inserted, formula (18) in the text fixed
JETP Lett. 113 (2021) 9, 555-562
10.1134/S0021364021090083
null
hep-ph hep-ex
http://creativecommons.org/licenses/by-sa/4.0/
The $Q^2$ dependence of the ratio of the cross sections with and without proton spin flip, as well as the polarization asymmetry in the process $e \vec{p} \to e \vec{p}$ has been numerically analyzed using the results of JLab polarization experiments on the measurements of the ratio of the Sachs form factors in the $...
[ { "created": "Sun, 18 Jul 2021 17:56:04 GMT", "version": "v1" }, { "created": "Fri, 6 Aug 2021 16:52:16 GMT", "version": "v2" } ]
2021-08-09
[ [ "Galynskii", "M. V.", "" ] ]
The $Q^2$ dependence of the ratio of the cross sections with and without proton spin flip, as well as the polarization asymmetry in the process $e \vec{p} \to e \vec{p}$ has been numerically analyzed using the results of JLab polarization experiments on the measurements of the ratio of the Sachs form factors in the $\v...
1304.7645
Franck Sabati\'e
C. Mezrag, H. Moutarde and F. Sabati\'e
Test of two new parameterizations of the Generalized Parton Distribution $H$
38 pages, 12 figures
null
10.1103/PhysRevD.88.014001
IRFU-13-94
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In 2011 Radyushkin outlined the practical implementation of the One-Component Double Distribution formalism in realistic Generalized Parton Distribution models. We compare the One-Component Double Distribution framework to the standard one and compute Deeply Virtual Compton Scattering observables for both. In particu...
[ { "created": "Mon, 29 Apr 2013 12:34:59 GMT", "version": "v1" } ]
2013-08-09
[ [ "Mezrag", "C.", "" ], [ "Moutarde", "H.", "" ], [ "Sabatié", "F.", "" ] ]
In 2011 Radyushkin outlined the practical implementation of the One-Component Double Distribution formalism in realistic Generalized Parton Distribution models. We compare the One-Component Double Distribution framework to the standard one and compute Deeply Virtual Compton Scattering observables for both. In particula...
1303.3822
Mariaelena Boglione Dr
M. Anselmino, M. Boglione, U. D'Alesio, S. Melis, F. Murgia, A. Prokudin
Simultaneous extraction of transversity and Collins functions from new SIDIS and e+e- data
15 pages, 10 figures, 3 tables
null
null
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a global re-analysis of the most recent experimental data on azimuthal asymmetries in semi-inclusive deep inelastic scattering, from the HERMES and COMPASS Collaborations, and in e+e- --> h_1 h_2 X processes, from the Belle Collaboration. The transversity and the Collins functions are extracted simultaneou...
[ { "created": "Fri, 15 Mar 2013 16:23:00 GMT", "version": "v1" } ]
2013-03-18
[ [ "Anselmino", "M.", "" ], [ "Boglione", "M.", "" ], [ "D'Alesio", "U.", "" ], [ "Melis", "S.", "" ], [ "Murgia", "F.", "" ], [ "Prokudin", "A.", "" ] ]
We present a global re-analysis of the most recent experimental data on azimuthal asymmetries in semi-inclusive deep inelastic scattering, from the HERMES and COMPASS Collaborations, and in e+e- --> h_1 h_2 X processes, from the Belle Collaboration. The transversity and the Collins functions are extracted simultaneousl...
1304.3549
Vladimir Saleev
M.A. Nefedov, V.A. Saleev and A.V Shipilova
Dijet azimuthal decorrelations at the LHC in the parton Reggeization approach
23 pages, 3 figures, corrected version (see Erratum)
Phys. Rev. D87, 094030 (2013)
10.1103/PhysRevD.87.094030
DESY 13-070
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study inclusive dijet azimuthal decorrelations in proton-proton collisions at the CERN LHC invoking the hypothesis of parton Reggeization in t-channel exchanges at high energies. In the parton Reggeization approach, the main contribution to the azimuthal angle difference between the two most energetic jets is due ...
[ { "created": "Fri, 12 Apr 2013 06:48:45 GMT", "version": "v1" }, { "created": "Fri, 26 Aug 2016 14:52:34 GMT", "version": "v2" }, { "created": "Sun, 16 Oct 2016 14:16:43 GMT", "version": "v3" } ]
2016-10-18
[ [ "Nefedov", "M. A.", "" ], [ "Saleev", "V. A.", "" ], [ "Shipilova", "A. V", "" ] ]
We study inclusive dijet azimuthal decorrelations in proton-proton collisions at the CERN LHC invoking the hypothesis of parton Reggeization in t-channel exchanges at high energies. In the parton Reggeization approach, the main contribution to the azimuthal angle difference between the two most energetic jets is due to...
2204.12500
So Chigusa
So Chigusa and Masahito Yamazaki
Quantum Simulations of Dark Sector Showers
18 pages, 7 figures
null
10.1016/j.physletb.2022.137466
KEK-TH-2417
hep-ph quant-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider dark sector scenarios where dark matter is accompanied by a dark photon and multiple-flavor dark fermions charged under the dark gauge group. We study quantum interference effects in dark sector jets, where multiple dark photons are emitted from high-energy dark fermions. We perform fully quantum simulati...
[ { "created": "Tue, 26 Apr 2022 18:00:00 GMT", "version": "v1" }, { "created": "Wed, 5 Oct 2022 22:53:38 GMT", "version": "v2" } ]
2022-10-07
[ [ "Chigusa", "So", "" ], [ "Yamazaki", "Masahito", "" ] ]
We consider dark sector scenarios where dark matter is accompanied by a dark photon and multiple-flavor dark fermions charged under the dark gauge group. We study quantum interference effects in dark sector jets, where multiple dark photons are emitted from high-energy dark fermions. We perform fully quantum simulation...
hep-ph/0204356
Winston Roberts
Winston Roberts
$\rho$ Polarization and `Model Independent' Extraction of $|V_{ub}|/|V_{cd}|$ from $D\to\rho\ell\nu$ and $B\to\rho\ell\nu$
8 pages, LaTeX, 1 figure
Phys.Rev.D68:013005,2003
10.1103/PhysRevD.68.013005
JLAB-THY-02-19
hep-ph
null
We briefly discuss the predictions of the heavy quark effective theory for the semileptonic decays of a heavy pseudoscalar to a light one, or to a light vector meson. We point out that measurement of combinations of differential helicity decay rates at Cleo-c and the $B$ factories can provide a model independent mean...
[ { "created": "Tue, 30 Apr 2002 15:00:13 GMT", "version": "v1" } ]
2014-11-17
[ [ "Roberts", "Winston", "" ] ]
We briefly discuss the predictions of the heavy quark effective theory for the semileptonic decays of a heavy pseudoscalar to a light one, or to a light vector meson. We point out that measurement of combinations of differential helicity decay rates at Cleo-c and the $B$ factories can provide a model independent means ...
1407.8158
Frash\"er Loshaj
Frasher Loshaj, Dmitri E. Kharzeev
Soft photon production from real-time dynamics of jet fragmentation
Talk presented at Quark Matter 2014 by FL
null
10.1016/j.nuclphysa.2014.08.006
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Soft photons produced in heavy ion collisions are an important tool for probing the properties of the quark-gluon plasma. It is therefore crucial to understand the background - soft photons produced in elementary collisions. Low theorem states that soft photon production in hadron collisions is dominated by Bremsstra...
[ { "created": "Wed, 30 Jul 2014 19:03:05 GMT", "version": "v1" } ]
2015-06-22
[ [ "Loshaj", "Frasher", "" ], [ "Kharzeev", "Dmitri E.", "" ] ]
Soft photons produced in heavy ion collisions are an important tool for probing the properties of the quark-gluon plasma. It is therefore crucial to understand the background - soft photons produced in elementary collisions. Low theorem states that soft photon production in hadron collisions is dominated by Bremsstrahl...
1409.0007
Martin Vollmann
Chiara Arina, Torsten Bringmann, Joseph Silk and Martin Vollmann
Enhanced Line Signals from Annihilating Kaluza-Klein Dark Matter
null
Phys. Rev. D 90, 083506 (2014)
10.1103/PhysRevD.90.083506
null
hep-ph astro-ph.CO astro-ph.HE
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Monochromatic gamma ray lines have long been known to provide potential smoking gun signals for annihilating dark matter. Here, we demonstrate that the situation is particularly interesting for Kaluza-Klein dark matter because resonant annihilation is generically expected for small, but not necessarily vanishing rela...
[ { "created": "Fri, 29 Aug 2014 20:00:18 GMT", "version": "v1" } ]
2014-10-13
[ [ "Arina", "Chiara", "" ], [ "Bringmann", "Torsten", "" ], [ "Silk", "Joseph", "" ], [ "Vollmann", "Martin", "" ] ]
Monochromatic gamma ray lines have long been known to provide potential smoking gun signals for annihilating dark matter. Here, we demonstrate that the situation is particularly interesting for Kaluza-Klein dark matter because resonant annihilation is generically expected for small, but not necessarily vanishing relati...
1106.6325
Kneur Jean-Loic
Amine Benhenni, Jean-Loic Kneur, Gilbert Moultaka, and Sean Bailly
Revisiting No-Scale Supergravity Inspired Scenarios: Updated Theoretical and Phenomenological Constraints
37 pages, 13 figures, 2 tables. v2: some references added
null
10.1103/PhysRevD.84.075015
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider no-scale inspired supergravity scenarios, where the gravitino mass and related soft supersymmetry-breaking parameters are determined dynamically by radiative corrections to an essentially flat tree-level potential in the supersymmetry breaking hidden sector. We examine the theoretical and phenomenological...
[ { "created": "Thu, 30 Jun 2011 18:21:03 GMT", "version": "v1" }, { "created": "Thu, 7 Jul 2011 15:47:08 GMT", "version": "v2" } ]
2015-03-19
[ [ "Benhenni", "Amine", "" ], [ "Kneur", "Jean-Loic", "" ], [ "Moultaka", "Gilbert", "" ], [ "Bailly", "Sean", "" ] ]
We consider no-scale inspired supergravity scenarios, where the gravitino mass and related soft supersymmetry-breaking parameters are determined dynamically by radiative corrections to an essentially flat tree-level potential in the supersymmetry breaking hidden sector. We examine the theoretical and phenomenological v...
1202.3795
Thorsten Feldmann
Thorsten Feldmann, Soumitra Nandi, Amarjit Soni
Repercussions of Flavour Symmetry Breaking on CP Violation in D-Meson Decays
22 pages, 12 figures
null
10.1007/JHEP06(2012)007
SI-HEP-2012-03
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate to what extent the recently measured value for a non-vanishing direct CP asymmetry in D0 -> K+ K- and D0 -> pi+ pi- decays can be accommodated in the Standard Model (SM) or extensions with a constrained flavour sector, for instance from a sequential 4th generation of quarks (4G). From the comparison wi...
[ { "created": "Thu, 16 Feb 2012 21:09:51 GMT", "version": "v1" } ]
2015-06-04
[ [ "Feldmann", "Thorsten", "" ], [ "Nandi", "Soumitra", "" ], [ "Soni", "Amarjit", "" ] ]
We investigate to what extent the recently measured value for a non-vanishing direct CP asymmetry in D0 -> K+ K- and D0 -> pi+ pi- decays can be accommodated in the Standard Model (SM) or extensions with a constrained flavour sector, for instance from a sequential 4th generation of quarks (4G). From the comparison with...
1201.4936
Atsushi Watanabe
Werner Rodejohann, Morimitsu Tanimoto, Atsushi Watanabe
Relating large $U_{e3}$ to the ratio of neutrino mass-squared differences
13 pages, 2 figures
null
10.1016/j.physletb.2012.03.037
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The non-zero and sizable value of $U_{e3}$ puts pressure on flavor symmetry models which predict an initially vanishing value. Hence, the tradition of relating fermion mixing matrix elements with fermion mass ratios might need to be resurrected. We note that the recently observed non-vanishing value of $U_{e3}$ can b...
[ { "created": "Tue, 24 Jan 2012 09:52:14 GMT", "version": "v1" } ]
2015-06-03
[ [ "Rodejohann", "Werner", "" ], [ "Tanimoto", "Morimitsu", "" ], [ "Watanabe", "Atsushi", "" ] ]
The non-zero and sizable value of $U_{e3}$ puts pressure on flavor symmetry models which predict an initially vanishing value. Hence, the tradition of relating fermion mixing matrix elements with fermion mass ratios might need to be resurrected. We note that the recently observed non-vanishing value of $U_{e3}$ can be ...
hep-ph/9702259
Christian Tix
C. Tix
Lower bound for the ground state energy of the no-pair Hamiltonian
5 pages, 1 figure, 1 table, Latex2e (amssymb,amsmath,graphicx)
Phys.Lett. B405 (1997) 293-296
10.1016/S0370-2693(97)00622-9
null
hep-ph
null
A lower bound for the ground state energy of a one particle relativistic Hamiltonian - sometimes called no-pair operator - is provided.
[ { "created": "Wed, 5 Feb 1997 13:54:52 GMT", "version": "v1" } ]
2009-10-30
[ [ "Tix", "C.", "" ] ]
A lower bound for the ground state energy of a one particle relativistic Hamiltonian - sometimes called no-pair operator - is provided.
1607.08301
ChengGang Shao
Cheng-Gang Shao, Ya-Fen Chen, and Yu-Jie Tan
Preliminary Design of a Pendulum Experiment for Searching for a Lorentz-Violation Signal
Presented at the Seventh Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 20-24, 2016
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
This work mainly presents a preliminary design for a pendulum experiment with both the source mass and the test mass in a striped pattern to amplify the Lorentz-violation signal, since the signal is sensitive to edge effects.
[ { "created": "Thu, 28 Jul 2016 03:11:55 GMT", "version": "v1" } ]
2016-07-29
[ [ "Shao", "Cheng-Gang", "" ], [ "Chen", "Ya-Fen", "" ], [ "Tan", "Yu-Jie", "" ] ]
This work mainly presents a preliminary design for a pendulum experiment with both the source mass and the test mass in a striped pattern to amplify the Lorentz-violation signal, since the signal is sensitive to edge effects.
2212.14458
Nabarun Chakrabarty
Nabarun Chakrabarty, Indrani Chakraborty, Dilip Kumar Ghosh, Gourab Saha
Muon $g-2$ and $W$-mass in a framework of colored scalars: an LHC perspective
27 pages + references, 7 captioned figures, 10 tables
null
null
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
A color octet isodoublet can have esoteric origins and it complies with minimal flavour violation. In this study, we take a scenario where the well known Type-X Two-Higgs doublet model is augmented with a color octet isodoublet. We shed light on how such a setup can predict the recently observed value for the $W$-bos...
[ { "created": "Thu, 29 Dec 2022 21:01:07 GMT", "version": "v1" } ]
2023-01-02
[ [ "Chakrabarty", "Nabarun", "" ], [ "Chakraborty", "Indrani", "" ], [ "Ghosh", "Dilip Kumar", "" ], [ "Saha", "Gourab", "" ] ]
A color octet isodoublet can have esoteric origins and it complies with minimal flavour violation. In this study, we take a scenario where the well known Type-X Two-Higgs doublet model is augmented with a color octet isodoublet. We shed light on how such a setup can predict the recently observed value for the $W$-boson...
1410.7722
Yuri V. Kovchegov
Yuri V. Kovchegov
Brief Review of Saturation Physics
17 pages, 11 figures; based on the lectures presented at the LIV Cracow School of Theoretical Physics "QCD meets experiment" in Zakopane, Poland in June 2014 and on the overview talk given at the "QCD Evolution Workshop" in Santa Fe, NM in May 2014
null
10.5506/APhysPolB.45.2241
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a short overview of saturation physics followed by a summary of the recent progress in our understanding of nonlinear small-$x$ evolution. Topics include McLerran-Venugopalan model, Glauber-Mueller approximation, nonlinear BK/JIMWLK evolution equations, along with the running-coupling and NLO corrections t...
[ { "created": "Tue, 28 Oct 2014 18:21:00 GMT", "version": "v1" } ]
2015-06-23
[ [ "Kovchegov", "Yuri V.", "" ] ]
We present a short overview of saturation physics followed by a summary of the recent progress in our understanding of nonlinear small-$x$ evolution. Topics include McLerran-Venugopalan model, Glauber-Mueller approximation, nonlinear BK/JIMWLK evolution equations, along with the running-coupling and NLO corrections to ...
2203.04673
Suvam Maharana
Debajyoti Choudhury, Kuldeep Deka, Suvam Maharana, Lalit Kumar Saini
Anomalous gauge couplings vis-$\grave{a}$-vis $(g-2)_\mu$ and flavor observables
13 pages. Typos corrected, figures updated and a few segments expanded. Minor change in the results. Version to appear in PRD
null
10.1103/PhysRevD.106.115026
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
We reassess non-standard triple gauge couplings in the light of the recent $(g-2)_\mu$ measurement at FNAL, the new lattice theory result of $(g-2)_\mu$ and the updated measurements of several $B$-decay modes. In the framework of SMEFT, three bosonic dimension-6 operators are invoked to parametrize physics beyond the...
[ { "created": "Wed, 9 Mar 2022 12:28:05 GMT", "version": "v1" }, { "created": "Fri, 18 Nov 2022 12:04:33 GMT", "version": "v2" } ]
2023-01-04
[ [ "Choudhury", "Debajyoti", "" ], [ "Deka", "Kuldeep", "" ], [ "Maharana", "Suvam", "" ], [ "Saini", "Lalit Kumar", "" ] ]
We reassess non-standard triple gauge couplings in the light of the recent $(g-2)_\mu$ measurement at FNAL, the new lattice theory result of $(g-2)_\mu$ and the updated measurements of several $B$-decay modes. In the framework of SMEFT, three bosonic dimension-6 operators are invoked to parametrize physics beyond the S...
hep-ph/9401334
Cliff Burgess
C.P. Burgess and J.M. Cline
What New Physics Can Double Beta Decay Experiments Hope to See?
LaTeX, 8 pages, 1 figure McGill-94/06, NEIP-94-002, TPI-MINN-94/3-T, UMN-TH-1236/94
null
null
null
hep-ph
null
Double-beta decay experiments have been traditionally interpreted in terms of the Gelmini-Roncadelli triplet majoron model, which has been ruled out by LEP. We briefly survey here the kinds of physics to which these experiments might be sensitive in the light of the LEP constraints. We identify six broad categories o...
[ { "created": "Wed, 26 Jan 1994 11:08:31 GMT", "version": "v1" } ]
2007-05-23
[ [ "Burgess", "C. P.", "" ], [ "Cline", "J. M.", "" ] ]
Double-beta decay experiments have been traditionally interpreted in terms of the Gelmini-Roncadelli triplet majoron model, which has been ruled out by LEP. We briefly survey here the kinds of physics to which these experiments might be sensitive in the light of the LEP constraints. We identify six broad categories of ...
1304.3383
Vladimir Saleev
M.A. Nefedov, V.A. Saleev and A.V Shipilova
Heavy quarkonium production in the Regge limit of QCD: from Tevatron to LHC
4 pages, 1 figure, Xth Quark Confinement and the Hadron Spectrum 8-12 October 2012 TUM Campus Garching, Munich, Germany
PoS (Confinement X) 314, 2013
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Heavy quarkonium production in the framework of the non-relativistic quantum chromodynamics and leading order of the parton Reggeization approach at the Tevatron and LHC is discussed. In this note, we compare our predictions for the bottomonium production at the LHC due to the color-singlet approximation of the non-r...
[ { "created": "Thu, 11 Apr 2013 17:40:08 GMT", "version": "v1" } ]
2013-04-12
[ [ "Nefedov", "M. A.", "" ], [ "Saleev", "V. A.", "" ], [ "Shipilova", "A. V", "" ] ]
Heavy quarkonium production in the framework of the non-relativistic quantum chromodynamics and leading order of the parton Reggeization approach at the Tevatron and LHC is discussed. In this note, we compare our predictions for the bottomonium production at the LHC due to the color-singlet approximation of the non-rel...
hep-ph/9503455
Georges Leontaris
E. G. Floratos, G. K. Leontaris
Analytic Approach to the MSSM Mass Spectrum in the Large Tan$\beta$ Regime
LaTeX - file, 32pp, 3 figures (uuencoded), Revised Version, (to appear in Nucl. Phys. B)
Nucl.Phys.B452:471-495,1995
10.1016/0550-3213(95)00417-Q
null
hep-ph
null
In various unified extensions of the Minimal Supersymmetric Standard Model, the Yukawa couplings of the third generation are predicted to be of the same order. As a result, low energy measured mass ratios, require large ratios of the standard model Higgs vacuum expectation values, corresponding to a large value of th...
[ { "created": "Tue, 28 Mar 1995 13:21:30 GMT", "version": "v1" }, { "created": "Tue, 22 Aug 1995 17:37:52 GMT", "version": "v2" } ]
2011-01-27
[ [ "Floratos", "E. G.", "" ], [ "Leontaris", "G. K.", "" ] ]
In various unified extensions of the Minimal Supersymmetric Standard Model, the Yukawa couplings of the third generation are predicted to be of the same order. As a result, low energy measured mass ratios, require large ratios of the standard model Higgs vacuum expectation values, corresponding to a large value of the ...
1007.2929
Taotao Qiu
Taotao Qiu
Can the Big Bang Singularity be avoided by a single scalar field?
9 pages, 7 figures
Class.Quant.Grav.27:215013,2010
10.1088/0264-9381/27/21/215013
null
hep-ph astro-ph.CO gr-qc hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this note, we investigate the possibility of avoiding the Big Bang singularity with a single scalar field which couples non-minimally to gravity. We show that in the case that gravity couples linearly to the field, some severe conditions on the field's potential have to be imposed. However, in non-linear case, it ...
[ { "created": "Sat, 17 Jul 2010 14:14:25 GMT", "version": "v1" }, { "created": "Fri, 15 Oct 2010 07:25:37 GMT", "version": "v2" } ]
2010-10-18
[ [ "Qiu", "Taotao", "" ] ]
In this note, we investigate the possibility of avoiding the Big Bang singularity with a single scalar field which couples non-minimally to gravity. We show that in the case that gravity couples linearly to the field, some severe conditions on the field's potential have to be imposed. However, in non-linear case, it is...
hep-ph/0412137
Egle Tomasi-Gustafsson
E. Tomasi-Gustafsson and G. I. Gakh
Search for evidence of two photon contribution in elastic electron proton data
15 pages 3 figures More details on the fitting procedure, more explicit explanations
Phys.Rev. C72 (2005) 015209
10.1103/PhysRevC.72.015209
null
hep-ph
null
We reanalyze the most recent data on elastic electron proton scattering. We look for a deviation from linearity of the Rosenbluth fit to the differential cross section, which would be the signature of the presence of two photon exchange. The two photon contribution is parametrized by a one parameter formula, based on...
[ { "created": "Fri, 10 Dec 2004 16:34:52 GMT", "version": "v1" }, { "created": "Fri, 17 Jun 2005 14:19:21 GMT", "version": "v2" } ]
2009-11-10
[ [ "Tomasi-Gustafsson", "E.", "" ], [ "Gakh", "G. I.", "" ] ]
We reanalyze the most recent data on elastic electron proton scattering. We look for a deviation from linearity of the Rosenbluth fit to the differential cross section, which would be the signature of the presence of two photon exchange. The two photon contribution is parametrized by a one parameter formula, based on s...
1703.01045
Yonghui Lin
Yong-hui Lin, Chao-wei Shen, Feng-kun Guo, Bing-song Zou
Decay behaviors of Pc hadronic molecules
17 pages,11 figures
Phys. Rev. D 95, 114017 (2017)
10.1103/PhysRevD.95.114017
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The $P_c(4380)$ and $P_c(4450)$ states observed recently by LHCb experiment were proposed to be either $\bar{D} \Sigma_c^*$ or $\bar{D}^* \Sigma_c$ S-wave bound states of spin parity $J^P={\frac32}^-$. We analyze the decay behaviors of such two types of hadronic molecules within the effective Lagrangian framework. Wi...
[ { "created": "Fri, 3 Mar 2017 05:56:53 GMT", "version": "v1" }, { "created": "Thu, 9 Mar 2017 06:10:58 GMT", "version": "v2" } ]
2017-06-28
[ [ "Lin", "Yong-hui", "" ], [ "Shen", "Chao-wei", "" ], [ "Guo", "Feng-kun", "" ], [ "Zou", "Bing-song", "" ] ]
The $P_c(4380)$ and $P_c(4450)$ states observed recently by LHCb experiment were proposed to be either $\bar{D} \Sigma_c^*$ or $\bar{D}^* \Sigma_c$ S-wave bound states of spin parity $J^P={\frac32}^-$. We analyze the decay behaviors of such two types of hadronic molecules within the effective Lagrangian framework. With...
2203.05579
Vishnu Padmanabhan Kovilakam
Johannes Herms, Sudip Jana, Vishnu P.K., Shaikh Saad
Minimal realization of light thermal Dark Matter
6 pages, 2 appendices + references, 2 figures
Phys.Rev.Lett. 129 (2022) 9, 091803
10.1103/PhysRevLett.129.091803
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
We propose a minimal UV-complete model for kinematically forbidden Dark Matter (DM) leading to a sub-GeV thermal relic. Our crucial realization is that the two-Higgs-doublet model can provide a light mediator through which the DM can annihilate into SM leptons, avoiding indirect detection constraints. The DM mass is ...
[ { "created": "Thu, 10 Mar 2022 19:00:01 GMT", "version": "v1" } ]
2022-08-29
[ [ "Herms", "Johannes", "" ], [ "Jana", "Sudip", "" ], [ "K.", "Vishnu P.", "" ], [ "Saad", "Shaikh", "" ] ]
We propose a minimal UV-complete model for kinematically forbidden Dark Matter (DM) leading to a sub-GeV thermal relic. Our crucial realization is that the two-Higgs-doublet model can provide a light mediator through which the DM can annihilate into SM leptons, avoiding indirect detection constraints. The DM mass is pr...
hep-ph/0009001
Athanasias Dedes
A. Dedes and H. K. Dreiner (Rutherford Appleton Lab.)
A Light Bottom Squark in the MSSM
15 pages, 6 figures
JHEP 0106:006,2001
10.1088/1126-6708/2001/06/006
null
hep-ph hep-ex
null
We study the compatibility of a light bottom squark M_{\tilde b}< O(10 GeV) in the unconstrained MSSM. We consider the one-loop radiative corrections which are large for a heavy gluino (> O(150 GeV)). We then consider the renormalization group flow up to the Grand Unified scale. For most regions of the parameter spac...
[ { "created": "Thu, 31 Aug 2000 23:00:20 GMT", "version": "v1" } ]
2010-02-03
[ [ "Dedes", "A.", "", "Rutherford Appleton Lab." ], [ "Dreiner", "H. K.", "", "Rutherford Appleton Lab." ] ]
We study the compatibility of a light bottom squark M_{\tilde b}< O(10 GeV) in the unconstrained MSSM. We consider the one-loop radiative corrections which are large for a heavy gluino (> O(150 GeV)). We then consider the renormalization group flow up to the Grand Unified scale. For most regions of the parameter space ...
hep-ph/0409065
Robert Jaffe
R. L. Jaffe
Exotica
Abstract and Introduction modified for publication in Physics Reports. Typographical corrections. 34 pages, 14 figures, 4 tables; These notes are a distillation of talks presented at QM2004, Berkeley, CA, January 2004; Multiquark Hadrons: Four, Five and More?, Kyoto, Japan, February 2004; Continuous Advances in...
Phys.Rept.409:1-45,2005
10.1016/j.physrep.2004.11.005
MIT-CTP-3538
hep-ph hep-ex nucl-th
null
The first evidence for Quantum Chromodynamics (QCD), the theory of the strong interactions, came from the systematics of baryon and meson spectroscopy. An important early observation was the apparent absence of exotics, baryons requiring more than three quarks or mesons requiring more than quark-antiquark. Years late...
[ { "created": "Tue, 7 Sep 2004 18:06:45 GMT", "version": "v1" }, { "created": "Mon, 25 Oct 2004 15:30:17 GMT", "version": "v2" } ]
2011-06-09
[ [ "Jaffe", "R. L.", "" ] ]
The first evidence for Quantum Chromodynamics (QCD), the theory of the strong interactions, came from the systematics of baryon and meson spectroscopy. An important early observation was the apparent absence of exotics, baryons requiring more than three quarks or mesons requiring more than quark-antiquark. Years later,...
1908.10323
Najmul Haque
Aritra Das and Najmul Haque
Neutral pion mass in the linear sigma model coupled to quarks at arbitrary magnetic field
17 pages, 8 figures, v2, published version
Phys. Rev. D 101, 074033 (2020)
10.1103/PhysRevD.101.074033
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We calculate the neutral pion mass in the presence of an external magnetic field of arbitrary strength in the framework of the linear sigma model coupled to quarks at zero temperature. We find nonmonotonic behavior of the pion mass as a function of magnetic field. We are also able to reproduce existing results for th...
[ { "created": "Tue, 27 Aug 2019 16:55:43 GMT", "version": "v1" }, { "created": "Tue, 28 Apr 2020 17:09:49 GMT", "version": "v2" } ]
2020-04-29
[ [ "Das", "Aritra", "" ], [ "Haque", "Najmul", "" ] ]
We calculate the neutral pion mass in the presence of an external magnetic field of arbitrary strength in the framework of the linear sigma model coupled to quarks at zero temperature. We find nonmonotonic behavior of the pion mass as a function of magnetic field. We are also able to reproduce existing results for the ...
hep-ph/0512193
Bin Zhang
Tao Han, Yu-Ping Kuang, Bin Zhang
Anomalous gauge couplings of the Higgs boson at high energy photon colliders
30 pages, 17 figures
Phys.Rev.D73:055010,2006
10.1103/PhysRevD.73.055010
null
hep-ph
null
We study the sensitivity of testing the anomalous gauge couplings $g_{HVV}$'s of the Higgs boson in the formulation of linearly realized gauge symmetry via the processes $\gamma\gamma\to ZZ$ and $\gamma\gamma\to WWWW$ at polarized and unpolarized photon colliders based on $e^+e^-$ linear colliders of c.m.~energies 50...
[ { "created": "Thu, 15 Dec 2005 04:09:02 GMT", "version": "v1" } ]
2008-11-26
[ [ "Han", "Tao", "" ], [ "Kuang", "Yu-Ping", "" ], [ "Zhang", "Bin", "" ] ]
We study the sensitivity of testing the anomalous gauge couplings $g_{HVV}$'s of the Higgs boson in the formulation of linearly realized gauge symmetry via the processes $\gamma\gamma\to ZZ$ and $\gamma\gamma\to WWWW$ at polarized and unpolarized photon colliders based on $e^+e^-$ linear colliders of c.m.~energies 500 ...
1605.05632
D. Ghilencea
D. M. Ghilencea
One-loop potential with scale invariance and effective operators
10 pages; Contribution to the Proceedings of the Corfu Summer Institute 2015, Sep 2015, Corfu, Greece
null
null
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study quantum corrections to the scalar potential in classically scale invariant theories, using a manifestly scale invariant regularization. To this purpose, the subtraction scale $\mu$ of the dimensional regularization is generated after spontaneous scale symmetry breaking, from a subtraction function of the fie...
[ { "created": "Wed, 18 May 2016 15:53:03 GMT", "version": "v1" } ]
2016-05-19
[ [ "Ghilencea", "D. M.", "" ] ]
We study quantum corrections to the scalar potential in classically scale invariant theories, using a manifestly scale invariant regularization. To this purpose, the subtraction scale $\mu$ of the dimensional regularization is generated after spontaneous scale symmetry breaking, from a subtraction function of the field...
2102.00961
Fu-Sheng Yu
Jia-Jie Han, Rui-Xiang Zhang, Hua-Yu Jiang, Zhen-Jun Xiao and Fu-Sheng Yu
Weak decays of bottom-charm baryons: $\mathcal{B}_{bc}\to\mathcal{B}_bP$
25 pages, 3 figures, 8 tables. Version for publication in EPJC
null
null
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
After the discovery of the double-charm baryon $\Xi_{cc}^{++}$ by LHCb, one of the most important topics is to search for the bottom-charm baryons which contain a $b$ quark, a $c$ quark and a light quark. In this work, we study the two-body non-leptonic weak decays of a bottom-charm baryon into a spin-$1/2$ bottomed ...
[ { "created": "Fri, 29 Jan 2021 13:59:26 GMT", "version": "v1" }, { "created": "Sat, 26 Jun 2021 01:27:51 GMT", "version": "v2" } ]
2021-06-29
[ [ "Han", "Jia-Jie", "" ], [ "Zhang", "Rui-Xiang", "" ], [ "Jiang", "Hua-Yu", "" ], [ "Xiao", "Zhen-Jun", "" ], [ "Yu", "Fu-Sheng", "" ] ]
After the discovery of the double-charm baryon $\Xi_{cc}^{++}$ by LHCb, one of the most important topics is to search for the bottom-charm baryons which contain a $b$ quark, a $c$ quark and a light quark. In this work, we study the two-body non-leptonic weak decays of a bottom-charm baryon into a spin-$1/2$ bottomed ba...
1510.08841
Florian Lyonnet
Florian Lyonnet
Automation of non-SUSY two-loop RGEs with PyR@TE: latest developments
Presentation at the DPF 2015 Meeting of the American Physical Society Division of Particles and Fields, Ann Arbor, Michigan, August 4-8, 2015
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In light of the conspicuous absence of SUSY in the energy range explored by the LHC during run I, non-supersymmetric BSM scenarios are becoming more and more attractive. One key ingredient in exploring such BSM physics are the renormalization group equations (RGEs) that are essential for extrapolating the theory to h...
[ { "created": "Thu, 29 Oct 2015 19:52:29 GMT", "version": "v1" } ]
2015-10-30
[ [ "Lyonnet", "Florian", "" ] ]
In light of the conspicuous absence of SUSY in the energy range explored by the LHC during run I, non-supersymmetric BSM scenarios are becoming more and more attractive. One key ingredient in exploring such BSM physics are the renormalization group equations (RGEs) that are essential for extrapolating the theory to hig...
0809.3442
Michael Hohensee
Michael A. Hohensee, Ralf Lehnert, David F. Phillips, Ronald L. Walsworth
Limits on isotropic Lorentz violation in QED from collider physics
Replaced with final version published in PRD
Phys.Rev.D80:036010,2009
10.1103/PhysRevD.80.036010
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider the possibility that Lorentz violation can generate differences between the limiting velocities of light and charged matter. Such effects would lead to efficient vacuum Cherenkov radiation or rapid photon decay. The absence of such effects for 104.5 GeV electrons at the Large Electron Positron collider an...
[ { "created": "Fri, 19 Sep 2008 19:45:46 GMT", "version": "v1" }, { "created": "Fri, 21 Aug 2009 22:24:52 GMT", "version": "v2" } ]
2009-09-02
[ [ "Hohensee", "Michael A.", "" ], [ "Lehnert", "Ralf", "" ], [ "Phillips", "David F.", "" ], [ "Walsworth", "Ronald L.", "" ] ]
We consider the possibility that Lorentz violation can generate differences between the limiting velocities of light and charged matter. Such effects would lead to efficient vacuum Cherenkov radiation or rapid photon decay. The absence of such effects for 104.5 GeV electrons at the Large Electron Positron collider and ...
1810.01428
Andrea Palessandro
Mathias Garny, Andrea Palessandro, McCullen Sandora, Martin S. Sloth
Charged Planckian Interacting Dark Matter
38 pages, 8 figures
null
10.1088/1475-7516/2019/01/021
null
hep-ph astro-ph.CO astro-ph.HE hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A minimal model of Cold Dark Matter (CDM) is a very massive particle with only gravitational interactions, also called Planckian Interacting Dark Matter (PIDM). Here we consider an extension of the PIDM framework by an unbroken $U(1)$ gauge symmetry under which the PIDM is charged, but remains only gravitationally co...
[ { "created": "Tue, 2 Oct 2018 18:00:32 GMT", "version": "v1" } ]
2019-01-16
[ [ "Garny", "Mathias", "" ], [ "Palessandro", "Andrea", "" ], [ "Sandora", "McCullen", "" ], [ "Sloth", "Martin S.", "" ] ]
A minimal model of Cold Dark Matter (CDM) is a very massive particle with only gravitational interactions, also called Planckian Interacting Dark Matter (PIDM). Here we consider an extension of the PIDM framework by an unbroken $U(1)$ gauge symmetry under which the PIDM is charged, but remains only gravitationally coup...
hep-ph/0306071
Martin Hirsch
A. Bartl, M. Hirsch, T. Kernreiter, W. Porod and J. W. F. Valle
Testing the Mechanism of R-parity Breaking with Slepton LSP Decays
Intro rewritten, Fig 1 and Fig 4 slightly changed, conclusions unchanged, 25 pages, 4 figures
JHEP 0311:005,2003
10.1088/1126-6708/2003/11/005
IFIC/03-24, ZU-TH 07/03, UWThPh-2003-05
hep-ph
null
In supersymmetric models R-parity can be violated through either bilinear or trilinear terms in the superpotential, or both. If charged scalar leptons are the lightest supersymmetric particles, their decay properties can be used to obtain information about the relative importance of these couplings. We show that in s...
[ { "created": "Mon, 9 Jun 2003 13:19:39 GMT", "version": "v1" }, { "created": "Thu, 23 Oct 2003 13:14:57 GMT", "version": "v2" } ]
2009-11-10
[ [ "Bartl", "A.", "" ], [ "Hirsch", "M.", "" ], [ "Kernreiter", "T.", "" ], [ "Porod", "W.", "" ], [ "Valle", "J. W. F.", "" ] ]
In supersymmetric models R-parity can be violated through either bilinear or trilinear terms in the superpotential, or both. If charged scalar leptons are the lightest supersymmetric particles, their decay properties can be used to obtain information about the relative importance of these couplings. We show that in som...
hep-ph/0612094
Pasquini Barbara
B. Pasquini, M. Pincetti, S. Boffi (Pavia U. & INFN, Pavia)
Drell-Yan processes, transversity and light-cone wavefunctions
17 pages, 7 figures; version to appear in Phys. Rev. D
Phys.Rev.D76:034020,2007
10.1103/PhysRevD.76.034020
null
hep-ph
null
The unpolarized, helicity and transversity distributions of quarks in the proton are calculated in the overlap representation of light-cone wavefunctions truncated to the lowest order Fock-space components with three valence quarks. The three distributions at the hadronic scale satisfy an interesting relation consist...
[ { "created": "Fri, 8 Dec 2006 12:41:30 GMT", "version": "v1" }, { "created": "Fri, 31 Aug 2007 09:54:51 GMT", "version": "v2" } ]
2008-11-26
[ [ "Pasquini", "B.", "", "Pavia U. & INFN, Pavia" ], [ "Pincetti", "M.", "", "Pavia U. & INFN, Pavia" ], [ "Boffi", "S.", "", "Pavia U. & INFN, Pavia" ] ]
The unpolarized, helicity and transversity distributions of quarks in the proton are calculated in the overlap representation of light-cone wavefunctions truncated to the lowest order Fock-space components with three valence quarks. The three distributions at the hadronic scale satisfy an interesting relation consisten...
2008.08573
Chi-Fong Wong
Chi-Fong Wong
Anomaly-free chiral $U(1)_{D}$ and its scotogenic implication
v1: 11 pages, 4 figures, 1 table; v2: references added, partially re-written, and accepted by Physics of the Dark Universe;
Physics of the Dark Universe 32 (2021) 100818
10.1016/j.dark.2021.100818
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We assume a dark $U_{D}$ symmetric hidden sector and explore its possible content such that neutrino mass and Dark Matter are generated through the scotogenic mechanism. The hidden sector is considered analogue to the Standard Model, namely the charge assignment of hidden fermions is chiral and anomaly-free. Moreover...
[ { "created": "Wed, 19 Aug 2020 17:56:27 GMT", "version": "v1" }, { "created": "Mon, 19 Apr 2021 10:50:45 GMT", "version": "v2" } ]
2021-04-20
[ [ "Wong", "Chi-Fong", "" ] ]
We assume a dark $U_{D}$ symmetric hidden sector and explore its possible content such that neutrino mass and Dark Matter are generated through the scotogenic mechanism. The hidden sector is considered analogue to the Standard Model, namely the charge assignment of hidden fermions is chiral and anomaly-free. Moreover, ...
1402.4405
Andrea Quadri
D. Binosi, A. Quadri, D.N. Triantafyllopoulos
Slavnov-Taylor Identity for the Effective Field Theory of the Color Glass Condensate
6 pages, contributed to The European Physical Society Conference on High Energy Physics -EPS-HEP2013, 18-24 July 2013, Stockholm, Sweden
PoS(EPS-HEP 2013)189
null
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We show that a powerful Slavnov-Taylor (ST) identity exists for the Effective Field Theory (EFT) of the Color Glass Condensate (CGC), allowing to control by purely algebraic means the full dependence on the background fields of the fast gluon modes, as well as the correlators of the quantum fluctuations of the classi...
[ { "created": "Tue, 18 Feb 2014 17:23:09 GMT", "version": "v1" } ]
2014-02-19
[ [ "Binosi", "D.", "" ], [ "Quadri", "A.", "" ], [ "Triantafyllopoulos", "D. N.", "" ] ]
We show that a powerful Slavnov-Taylor (ST) identity exists for the Effective Field Theory (EFT) of the Color Glass Condensate (CGC), allowing to control by purely algebraic means the full dependence on the background fields of the fast gluon modes, as well as the correlators of the quantum fluctuations of the classica...
hep-ph/9706458
Arthur Hebecker
A. Hebecker
Semiclassical Calculation of Diffractive Parton Densities
4 pages LaTeX, 1 figure, Talk presented at the 5th International Workshop on Deep Inelastic Scattering and QCD, Chicago, Illinois, USA, April 14-18, 1997
null
10.1063/1.53625
null
hep-ph
null
In this talk the relation between the semiclassical approach and the concept of diffractive parton densities is discussed. The proton rest frame calculation is organized in a way that exhibits the hard partonic cross section and the diffractive parton density as the two fundamental ingredients. The latter one is a no...
[ { "created": "Mon, 23 Jun 1997 15:17:44 GMT", "version": "v1" } ]
2009-10-30
[ [ "Hebecker", "A.", "" ] ]
In this talk the relation between the semiclassical approach and the concept of diffractive parton densities is discussed. The proton rest frame calculation is organized in a way that exhibits the hard partonic cross section and the diffractive parton density as the two fundamental ingredients. The latter one is a non-...
1310.6666
Anzhong Wang
Kai Lin, Shinji Mukohyama, Anzhong Wang, and Tao Zhu
Post-Newtonian approximations in the Ho\v{r}ava-Lifshitz gravity with extra U(1) symmetry
revtex4, no figures. Typos are corrected
Phys. Rev. D 89, 084022 (2014)
10.1103/PhysRevD.89.084022
IPMU13-0207
hep-ph astro-ph.SR gr-qc hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this paper, we first propose a universal coupling between the gravity and matter in the framework of the Ho\v{r}ava-Lifshitz theory of gravity with an extra U(1) symmetry for both the projectable and non-projectable cases. Then, using this universal coupling we study the post-Newtonian approximations and obtain th...
[ { "created": "Thu, 24 Oct 2013 16:44:21 GMT", "version": "v1" }, { "created": "Sat, 2 Nov 2013 10:11:56 GMT", "version": "v2" }, { "created": "Tue, 4 Mar 2014 21:53:43 GMT", "version": "v3" }, { "created": "Thu, 10 Apr 2014 19:08:49 GMT", "version": "v4" } ]
2014-04-23
[ [ "Lin", "Kai", "" ], [ "Mukohyama", "Shinji", "" ], [ "Wang", "Anzhong", "" ], [ "Zhu", "Tao", "" ] ]
In this paper, we first propose a universal coupling between the gravity and matter in the framework of the Ho\v{r}ava-Lifshitz theory of gravity with an extra U(1) symmetry for both the projectable and non-projectable cases. Then, using this universal coupling we study the post-Newtonian approximations and obtain the ...
2205.06339
Ambresh Shivaji
Ekta Chaubey, Mandeep Kaur and Ambresh Shivaji
Master integrals for ${\cal O}(\alpha \alpha_s)$ corrections to $H \to ZZ^*$
23 pages, 3 figures, 2 tables, Version accepted for publication in JHEP
null
10.1007/JHEP10(2022)056
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present analytic results for all the Feynman integrals relevant for ${\mathcal O}(\alpha \alpha_s)$ virtual corrections to $H \rightarrow ZZ^*$ decay. We use the method of differential equations to solve the master integrals while keeping the full dependence on the masses of all the particles including internal pr...
[ { "created": "Thu, 12 May 2022 20:05:29 GMT", "version": "v1" }, { "created": "Fri, 7 Oct 2022 09:23:16 GMT", "version": "v2" } ]
2022-10-26
[ [ "Chaubey", "Ekta", "" ], [ "Kaur", "Mandeep", "" ], [ "Shivaji", "Ambresh", "" ] ]
We present analytic results for all the Feynman integrals relevant for ${\mathcal O}(\alpha \alpha_s)$ virtual corrections to $H \rightarrow ZZ^*$ decay. We use the method of differential equations to solve the master integrals while keeping the full dependence on the masses of all the particles including internal prop...
hep-ph/9712204
Silvana Filipponi
S.Filipponi (1 and 2) and Y.Srivastava (2 and 3) ((1) Harvard U., Cambridge, Mass, USA; (2) U. di Perugia e INFN-Sezione di Perugia, Italy; (3) Northeastern U., Boston Mass, USA)
Hadronic Masses and Regge Trajectories
19 pages, 9 Figures, IV Tables
Phys.Rev. D58 (1998) 016003
10.1103/PhysRevD.58.016003
HUTP/97-A093
hep-ph
null
A comprehensive phenomenological analysis of experimental data and some theoretical models is presented here (for mesons) to critically discuss how Regge trajectory parameters depend on flavor. Through analytic continuation of physical trajectories (obtained from resonance data) into the space like region, we derive ...
[ { "created": "Sat, 29 Nov 1997 16:29:02 GMT", "version": "v1" } ]
2009-10-30
[ [ "Filipponi", "S.", "", "1 and 2" ], [ "Srivastava", "Y.", "", "2 and 3" ] ]
A comprehensive phenomenological analysis of experimental data and some theoretical models is presented here (for mesons) to critically discuss how Regge trajectory parameters depend on flavor. Through analytic continuation of physical trajectories (obtained from resonance data) into the space like region, we derive th...
hep-ph/9502353
James Liu
Jyoti Agrawal, Paul H. Frampton, James T. Liu
The decay $b\to s\gamma$ in the 3-3-1 model
20 pp. + 6 postscript figures (included at end)
Int.J.Mod.Phys. A11 (1996) 2263-2280
10.1142/S0217751X96001139
CTP-TAMU-3/95, IFP-709-UNC
hep-ph
null
The 3-3-1 model, based on the gauge group $SU(3)_c\times SU(3)_L\times U(1)_X$, makes a natural prediction of three generations based on anomaly cancellation. Since this is accomplished by incorporating the third family of quarks differently from the other two, it leads to potentially large flavor changing neutral cu...
[ { "created": "Mon, 20 Feb 1995 17:26:51 GMT", "version": "v1" } ]
2015-06-25
[ [ "Agrawal", "Jyoti", "" ], [ "Frampton", "Paul H.", "" ], [ "Liu", "James T.", "" ] ]
The 3-3-1 model, based on the gauge group $SU(3)_c\times SU(3)_L\times U(1)_X$, makes a natural prediction of three generations based on anomaly cancellation. Since this is accomplished by incorporating the third family of quarks differently from the other two, it leads to potentially large flavor changing neutral curr...
2312.12004
Raquel Molina Ms.
M. Bayar, R. Molina, E. Oset, Ming-Zhu Liu, and Li-Sheng Geng
Stripping triangle loops: Discussion of $D_s^+\to \rho^+\eta\to \pi^+\pi^0\eta$ in $a_0(980)$ production
6 pages, 4 figures
null
null
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
We address a general problem in the evaluation of triangle loops stemming from the consideration of the range of the interaction involved in some of the vertices, as well as the energy dependence of the width of some unstable particles in the loop. We find sizeable corrections from both effects. We apply that to a lo...
[ { "created": "Tue, 19 Dec 2023 09:51:39 GMT", "version": "v1" } ]
2023-12-20
[ [ "Bayar", "M.", "" ], [ "Molina", "R.", "" ], [ "Oset", "E.", "" ], [ "Liu", "Ming-Zhu", "" ], [ "Geng", "Li-Sheng", "" ] ]
We address a general problem in the evaluation of triangle loops stemming from the consideration of the range of the interaction involved in some of the vertices, as well as the energy dependence of the width of some unstable particles in the loop. We find sizeable corrections from both effects. We apply that to a loop...
1112.1944
Norimi Yokozaki
Koji Ishiwata and Natsumi Nagata and Norimi Yokozaki
Natural Supersymmetry and b -> s gamma constraints
13 pages, 4 figures; version to be published in PLB
null
10.1016/j.physletb.2012.02.052
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate constraints from the observed branching ratio for b -> s gamma and fine-tuning in the framework of natural supersymmetry. The natural supersymmetry requires the large trilinear coupling of the stop sector, light higgsinos (a small mu parameter) and light stops, in order to reduce the fine-tuning in the...
[ { "created": "Thu, 8 Dec 2011 20:55:32 GMT", "version": "v1" }, { "created": "Sun, 4 Mar 2012 14:48:41 GMT", "version": "v2" } ]
2015-06-03
[ [ "Ishiwata", "Koji", "" ], [ "Nagata", "Natsumi", "" ], [ "Yokozaki", "Norimi", "" ] ]
We investigate constraints from the observed branching ratio for b -> s gamma and fine-tuning in the framework of natural supersymmetry. The natural supersymmetry requires the large trilinear coupling of the stop sector, light higgsinos (a small mu parameter) and light stops, in order to reduce the fine-tuning in the H...
hep-ph/0510351
Banibrata Mukhopadhyay
Ujjal Debnath (JU), Banibrata Mukhopadhyay (Harvard), Naresh Dadhich (IUCAA)
Space-time curvature coupling of spinors in early universe: Neutrino asymmetry and a possible source of baryogenesis
9 RevTeX pages, no figure; Version to appear in Modern Physics Letters A
Mod.Phys.Lett. A21 (2006) 399-408
10.1142/S0217732306019542
null
hep-ph astro-ph gr-qc
null
It is well known that when a fermion propagates in curved space-time, its spin couples to the curvature of background space-time. We propose that this interaction for neutrinos propagating in early curved universe could give rise to a new set of dispersion relations and then neutrino asymmetry at equilibrium. We demo...
[ { "created": "Wed, 26 Oct 2005 19:46:27 GMT", "version": "v1" }, { "created": "Wed, 26 Oct 2005 20:00:22 GMT", "version": "v2" }, { "created": "Wed, 21 Dec 2005 15:07:49 GMT", "version": "v3" } ]
2009-11-11
[ [ "Debnath", "Ujjal", "", "JU" ], [ "Mukhopadhyay", "Banibrata", "", "Harvard" ], [ "Dadhich", "Naresh", "", "IUCAA" ] ]
It is well known that when a fermion propagates in curved space-time, its spin couples to the curvature of background space-time. We propose that this interaction for neutrinos propagating in early curved universe could give rise to a new set of dispersion relations and then neutrino asymmetry at equilibrium. We demons...
1701.05871
Astrid Nathalie Hiller Blin
Jose Manuel Alarc\'on, Astrid N. Hiller Blin, C. Weiss
Transverse densities of octet baryons from chiral effective field theory
Proceedings of Light Cone 2016
null
10.1007/s00601-017-1283-5
JLAB-THY-17-2399
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Transverse densities describe the distribution of charge and current at fixed light-front time and provide a frame-independent spatial representation of hadrons as relativistic systems. We calculate the transverse densities of the octet baryons at peripheral distances b = O(M_pi^{-1}) in an approach combining chiral ...
[ { "created": "Fri, 20 Jan 2017 17:57:57 GMT", "version": "v1" } ]
2017-04-26
[ [ "Alarcón", "Jose Manuel", "" ], [ "Blin", "Astrid N. Hiller", "" ], [ "Weiss", "C.", "" ] ]
Transverse densities describe the distribution of charge and current at fixed light-front time and provide a frame-independent spatial representation of hadrons as relativistic systems. We calculate the transverse densities of the octet baryons at peripheral distances b = O(M_pi^{-1}) in an approach combining chiral ef...
1611.07300
Maria Gomez-Rocha
Mar\'ia G\'omez-Rocha
From asymptotic freedom toward heavy quarkonia within the renormalization group procedure for effective particles
Presented at Light Cone 2016, IST, Universidade de Lisboa, Portugal, September 5-8 2016. 8 pages, 3 figures
null
10.1007/s00601-017-1218-1
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The renormalization group procedure for effective particles (RGPEP), developed as a nonperturbative tool for constructing bound states in quantum field theories, is applied to QCD. The approach stems from the similarity renormalization group and introduces the concept of effective particles. It has been shown that th...
[ { "created": "Tue, 22 Nov 2016 13:51:49 GMT", "version": "v1" } ]
2017-03-08
[ [ "Gómez-Rocha", "María", "" ] ]
The renormalization group procedure for effective particles (RGPEP), developed as a nonperturbative tool for constructing bound states in quantum field theories, is applied to QCD. The approach stems from the similarity renormalization group and introduces the concept of effective particles. It has been shown that the ...
hep-ph/9910298
Gilberto Tavares-Velasco
G. Tavares-Velasco and J.J Toscano
Signature of exotic particles in light by light scattering
6 eps figures. Requires elsevier.cls
Phys.Lett. B472 (2000) 105-112
10.1016/S0370-2693(99)01429-X
null
hep-ph
null
We discuss the implications on light by light scattering of two kind of exotic particles: doubly charged scalar bosons and doubly charged fermions; the virtual effects of a nonstandard singly charged gauge boson are also examined. These particles, if their masses lie in the range 0.1--1.0 TeV, will have a clear signa...
[ { "created": "Mon, 11 Oct 1999 19:50:39 GMT", "version": "v1" } ]
2009-10-31
[ [ "Tavares-Velasco", "G.", "" ], [ "Toscano", "J. J", "" ] ]
We discuss the implications on light by light scattering of two kind of exotic particles: doubly charged scalar bosons and doubly charged fermions; the virtual effects of a nonstandard singly charged gauge boson are also examined. These particles, if their masses lie in the range 0.1--1.0 TeV, will have a clear signatu...
hep-ph/0508277
Boris Kopeliovich
B.Z. Kopeliovich, I.K. Potashnikova, Ivan Schmidt
Large Rapidity Gap Processes in Proton-Nucleus Collisions
19 pages
Phys.Rev. C73 (2006) 034901
10.1103/PhysRevC.73.034901
null
hep-ph nucl-th
null
The cross sections for a variety of channels of proton-nucleus interaction associated with large gaps in rapidity are calculated within the Glauber-Gribov theory. We found inelastic shadowing corrections to be dramatically enhanced for such events. We employ the light-cone dipole formalism which allows to calculate t...
[ { "created": "Fri, 26 Aug 2005 22:29:42 GMT", "version": "v1" } ]
2009-11-11
[ [ "Kopeliovich", "B. Z.", "" ], [ "Potashnikova", "I. K.", "" ], [ "Schmidt", "Ivan", "" ] ]
The cross sections for a variety of channels of proton-nucleus interaction associated with large gaps in rapidity are calculated within the Glauber-Gribov theory. We found inelastic shadowing corrections to be dramatically enhanced for such events. We employ the light-cone dipole formalism which allows to calculate the...
1003.5467
Kazem Azizi
T. M. Aliev, K. Azizi, M. Savci
Strong transitions of decuplet to octet baryons and pseudoscalar mesons
21 Pages, 2 Figures and 3 Tables
Nucl.Phys.A847:101-117,2010
10.1016/j.nuclphysa.2010.06.013
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The strong coupling constants of light pseudoscalar $\pi$, $K$ and $\eta$ mesons with decuplet--octet baryons are studied within light cone QCD sum rules, where $SU(3)_f$ symmetry breaking effects are taken into account. It is obtained that all coupling constants under the consideration are described by only one univ...
[ { "created": "Mon, 29 Mar 2010 09:03:53 GMT", "version": "v1" }, { "created": "Mon, 28 Jun 2010 18:50:43 GMT", "version": "v2" } ]
2014-11-20
[ [ "Aliev", "T. M.", "" ], [ "Azizi", "K.", "" ], [ "Savci", "M.", "" ] ]
The strong coupling constants of light pseudoscalar $\pi$, $K$ and $\eta$ mesons with decuplet--octet baryons are studied within light cone QCD sum rules, where $SU(3)_f$ symmetry breaking effects are taken into account. It is obtained that all coupling constants under the consideration are described by only one univer...
hep-ph/0001149
E. Martynov
P.Desgrolard, M.Giffon, E.Martynov and E.Predazzi
Of Dips, Structures and Eikonalization
28 pages, LaTeX, 7 figures
Eur.Phys.J.C16:499-511,2000
10.1007/s100520000431
LYCEN 99132, DFTT 95/69
hep-ph
null
We have investigated several models of Pomeron and Odderon contributions to high energy elastic $pp$ and $\bar p p$ scattering. The questions we address concern their role in this field, the behavior of the scattering amplitude (or of the total cross-section) at high energy, and how to fit all high energy elastic dat...
[ { "created": "Mon, 17 Jan 2000 01:12:01 GMT", "version": "v1" } ]
2009-01-07
[ [ "Desgrolard", "P.", "" ], [ "Giffon", "M.", "" ], [ "Martynov", "E.", "" ], [ "Predazzi", "E.", "" ] ]
We have investigated several models of Pomeron and Odderon contributions to high energy elastic $pp$ and $\bar p p$ scattering. The questions we address concern their role in this field, the behavior of the scattering amplitude (or of the total cross-section) at high energy, and how to fit all high energy elastic data....
1701.06554
Martin Hoferichter
Gilberto Colangelo, Martin Hoferichter, Massimiliano Procura, Peter Stoffer
Rescattering effects in the hadronic-light-by-light contribution to the anomalous magnetic moment of the muon
7 pages, 1 figure; version to appear in PRL
Phys. Rev. Lett. 118, 232001 (2017)
10.1103/PhysRevLett.118.232001
INT-PUB-17-005, CERN-TH-2017-014, NSF-KITP-17-012
hep-ph hep-ex hep-lat nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a first model-independent calculation of $\pi\pi$ intermediate states in the hadronic-light-by-light (HLbL) contribution to the anomalous magnetic moment of the muon $(g-2)_\mu$ that goes beyond the scalar QED pion loop. To this end we combine a recently developed dispersive description of the HLbL tensor ...
[ { "created": "Mon, 23 Jan 2017 18:55:04 GMT", "version": "v1" }, { "created": "Tue, 30 May 2017 18:46:10 GMT", "version": "v2" } ]
2017-06-13
[ [ "Colangelo", "Gilberto", "" ], [ "Hoferichter", "Martin", "" ], [ "Procura", "Massimiliano", "" ], [ "Stoffer", "Peter", "" ] ]
We present a first model-independent calculation of $\pi\pi$ intermediate states in the hadronic-light-by-light (HLbL) contribution to the anomalous magnetic moment of the muon $(g-2)_\mu$ that goes beyond the scalar QED pion loop. To this end we combine a recently developed dispersive description of the HLbL tensor wi...
hep-ph/0308123
Danny Marfatia
V. Barger, D. Marfatia and K. Whisnant
Progress in the physics of massive neutrinos
111 pages, 35 figures. Updated
Int.J.Mod.Phys.E12:569-647,2003
10.1142/S0218301303001430
AMES-HET-03-05, BUHEP-03-17, MADPH-03-1340, NSF-KITP-03-60
hep-ph astro-ph hep-ex nucl-ex nucl-th
null
The current status of the physics of massive neutrinos is reviewed with a forward-looking emphasis. The article begins with the general phenomenology of neutrino oscillations in vacuum and matter and documents the experimental evidence for oscillations of solar, reactor, atmospheric and accelerator neutrinos. Both ac...
[ { "created": "Tue, 12 Aug 2003 16:15:56 GMT", "version": "v1" }, { "created": "Tue, 16 Sep 2003 20:18:37 GMT", "version": "v2" } ]
2009-09-15
[ [ "Barger", "V.", "" ], [ "Marfatia", "D.", "" ], [ "Whisnant", "K.", "" ] ]
The current status of the physics of massive neutrinos is reviewed with a forward-looking emphasis. The article begins with the general phenomenology of neutrino oscillations in vacuum and matter and documents the experimental evidence for oscillations of solar, reactor, atmospheric and accelerator neutrinos. Both acti...
hep-ph/9910315
Erler
Jens Erler and Paul Langacker
Indications for an Extra Neutral Gauge Boson in Electroweak Precision Data
5 pages of ReVTeX, 2 figures
Phys.Rev.Lett.84:212-215,2000
10.1103/PhysRevLett.84.212
UPR-863-T
hep-ph hep-ex
null
A new analysis of the hadronic peak cross section at LEP 1 implies a small amount of missing invisible width in Z decays, while the effective weak charge in atomic parity violation has been determined recently to 0.6% accuracy, indicating a significantly negative S parameter. As a consequence of these two deviations,...
[ { "created": "Wed, 13 Oct 1999 00:58:25 GMT", "version": "v1" }, { "created": "Sat, 13 Nov 1999 01:16:11 GMT", "version": "v2" } ]
2008-11-26
[ [ "Erler", "Jens", "" ], [ "Langacker", "Paul", "" ] ]
A new analysis of the hadronic peak cross section at LEP 1 implies a small amount of missing invisible width in Z decays, while the effective weak charge in atomic parity violation has been determined recently to 0.6% accuracy, indicating a significantly negative S parameter. As a consequence of these two deviations, t...
hep-ph/9904420
J. Guilherme Milhano
Alex Kovner and J. Guilherme Milhano
Vector potential versus colour charge density in low-x evolution
15 pages, 1 figure, changes made referee report, to be published in Phys. Rev D
Phys. Rev. D 61, 014012 (1999)
10.1103/PhysRevD.61.014012
OUTP-99 22P
hep-ph
null
We reconsider the evolution equations for multigluon correlators derived in hep-ph/9709432. We show how to derive these equations directly in terms of vector potentials (or colour field strength) avoiding the introduction of the concept of colour charge density in the intermediate steps. The two step procedure of der...
[ { "created": "Wed, 21 Apr 1999 15:55:15 GMT", "version": "v1" }, { "created": "Fri, 6 Aug 1999 10:30:44 GMT", "version": "v2" } ]
2016-08-25
[ [ "Kovner", "Alex", "" ], [ "Milhano", "J. Guilherme", "" ] ]
We reconsider the evolution equations for multigluon correlators derived in hep-ph/9709432. We show how to derive these equations directly in terms of vector potentials (or colour field strength) avoiding the introduction of the concept of colour charge density in the intermediate steps. The two step procedure of deriv...
hep-ph/0501076
Asko Jokinen
Kari Enqvist, Asko Jokinen, Anupam Mazumdar, Tuomas Multamaki and Antti Vaihkonen
Non-Gaussianity from Instant and Tachyonic Preheating
12 pages, 1 figure, additional discussion, improved constraint on the scale of tachyonic preheating
JCAP 0503 (2005) 010
10.1088/1475-7516/2005/03/010
NORDITA-2005-03, HIP-2005-01/TH
hep-ph astro-ph gr-qc hep-th
null
We study non-Gaussianity in two distinct models of preheating: instant and tachyonic. In instant preheating non-Gaussianity is sourced by the local terms generated through the coupled perturbations of the two scalar fields. We find that the non-Gaussianity parameter is given by $f_{NL}^{\phi}\sim 2g < O(1)$, where $g...
[ { "created": "Mon, 10 Jan 2005 18:12:13 GMT", "version": "v1" }, { "created": "Tue, 1 Feb 2005 10:17:00 GMT", "version": "v2" }, { "created": "Fri, 18 Mar 2005 08:32:33 GMT", "version": "v3" } ]
2007-05-23
[ [ "Enqvist", "Kari", "" ], [ "Jokinen", "Asko", "" ], [ "Mazumdar", "Anupam", "" ], [ "Multamaki", "Tuomas", "" ], [ "Vaihkonen", "Antti", "" ] ]
We study non-Gaussianity in two distinct models of preheating: instant and tachyonic. In instant preheating non-Gaussianity is sourced by the local terms generated through the coupled perturbations of the two scalar fields. We find that the non-Gaussianity parameter is given by $f_{NL}^{\phi}\sim 2g < O(1)$, where $g$ ...
hep-ph/0312308
Gilberto Tavares-Velasco
J. L. Garcia-Luna (Guadalajara U.), G. Tavares-Velasco and J. J. Toscano (Puebla U.)
Static quantities of the W boson in the SU_L(3) X U_X(1) model with right-handed neutrinos
New material included. Final version to apppear in Physical Review D
Phys.Rev. D69 (2004) 093005
10.1103/PhysRevD.69.093005
null
hep-ph
null
The static electromagnetic properties of the $W$ boson, $\Delta \kappa$ and $\Delta Q$, are calculated in the $SU_L(3)} \times U_X(1)$ model with right-handed neutrinos. The new contributions from this model arise from the gauge and scalar sectors. In the gauge sector there is a new contribution from a complex neutra...
[ { "created": "Sun, 21 Dec 2003 20:02:11 GMT", "version": "v1" }, { "created": "Wed, 24 Mar 2004 04:45:11 GMT", "version": "v2" } ]
2009-11-10
[ [ "Garcia-Luna", "J. L.", "", "Guadalajara U." ], [ "Tavares-Velasco", "G.", "", "Puebla U." ], [ "Toscano", "J. J.", "", "Puebla U." ] ]
The static electromagnetic properties of the $W$ boson, $\Delta \kappa$ and $\Delta Q$, are calculated in the $SU_L(3)} \times U_X(1)$ model with right-handed neutrinos. The new contributions from this model arise from the gauge and scalar sectors. In the gauge sector there is a new contribution from a complex neutral ...
hep-ph/9911360
Sandro Ambrosanio
Sandro Ambrosanio (CERN), Grahame A. Blair (U. of London)
Extracting GMSB Parameters at a Linear Collider
6 pages, LaTeX + epsf.sty, 3 figures
null
null
CERN-TH/99-348
hep-ph
null
Assuming gauge-mediated supersymmetry breaking, we simulate precision measurements of fundamental parameters at a 500 GeV e+e- linear collider in the scenario where a neutralino is the next-to-lightest supersymmetric particle. Information on the supersymmetry breaking and the messenger sectors of the theory is extrac...
[ { "created": "Mon, 15 Nov 1999 16:04:59 GMT", "version": "v1" } ]
2007-05-23
[ [ "Ambrosanio", "Sandro", "", "CERN" ], [ "Blair", "Grahame A.", "", "U. of London" ] ]
Assuming gauge-mediated supersymmetry breaking, we simulate precision measurements of fundamental parameters at a 500 GeV e+e- linear collider in the scenario where a neutralino is the next-to-lightest supersymmetric particle. Information on the supersymmetry breaking and the messenger sectors of the theory is extracte...
0708.1035
Thomas J. Weiler
Ralf Lehnert and Thomas J. Weiler
Neutrino flavor ratios as diagnostic of solar WIMP annihilation
30 pages, including 10 figures and 4 appendices
Phys.Rev.D77:125004,2008
10.1103/PhysRevD.77.125004
MIT-CTP-3849, MPP-2007-97
hep-ph astro-ph
null
We consider the neutrino (and antineutrino) flavors arriving at Earth for neutrinos produced in the annihilation of weakly interacting massive particles (WIMPs) in the Sun's core. Solar-matter effects on the flavor propagation of the resulting $\agt$ GeV neutrinos are studied analytically within a density-matrix form...
[ { "created": "Wed, 8 Aug 2007 01:43:36 GMT", "version": "v1" } ]
2008-11-26
[ [ "Lehnert", "Ralf", "" ], [ "Weiler", "Thomas J.", "" ] ]
We consider the neutrino (and antineutrino) flavors arriving at Earth for neutrinos produced in the annihilation of weakly interacting massive particles (WIMPs) in the Sun's core. Solar-matter effects on the flavor propagation of the resulting $\agt$ GeV neutrinos are studied analytically within a density-matrix formal...
0711.1339
Barry Green
M.D. Scadron and B.A. Green
Predictive pion-quark BCS relation and Thornber-Feynman high-Tc gap
14 pages, 1 figure
null
null
null
hep-ph cond-mat.supr-con
null
A pion-quark pairing temperature is defined by a BCS-like relation identified from a quark-level Goldberger-Treiman relation with a Nambu scalar mass "gap parameter" taken in the low-mass limit. This intuitive relation predicts the associated "experimental" lattice-gauge pairing temperature. The opposite high-mass li...
[ { "created": "Thu, 8 Nov 2007 19:09:26 GMT", "version": "v1" } ]
2007-11-13
[ [ "Scadron", "M. D.", "" ], [ "Green", "B. A.", "" ] ]
A pion-quark pairing temperature is defined by a BCS-like relation identified from a quark-level Goldberger-Treiman relation with a Nambu scalar mass "gap parameter" taken in the low-mass limit. This intuitive relation predicts the associated "experimental" lattice-gauge pairing temperature. The opposite high-mass limi...
0912.5372
James Maxin
James A. Maxin, Van E. Mayes, and D.V. Nanopoulos
Stringy Neutralino Dark Matter in Light of CDMSII
9 pages, 2 figures
null
null
null
hep-ph astro-ph.CO hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Recently, the CDMS experiment has reported the possible first direct-detection of dark matter. We update the direct-detection constraints for neutralino dark matter arising in a realistic string model constructed from intersecting D6-branes taking into account the recent data from the CDMS collaboration. We find that...
[ { "created": "Tue, 29 Dec 2009 21:26:27 GMT", "version": "v1" } ]
2010-01-12
[ [ "Maxin", "James A.", "" ], [ "Mayes", "Van E.", "" ], [ "Nanopoulos", "D. V.", "" ] ]
Recently, the CDMS experiment has reported the possible first direct-detection of dark matter. We update the direct-detection constraints for neutralino dark matter arising in a realistic string model constructed from intersecting D6-branes taking into account the recent data from the CDMS collaboration. We find that t...
hep-ph/9603212
Christopher Kolda
K.S. Babu, Chris Kolda, and John March-Russell (Institute for Advanced Study, Princeton)
Leptophobic U(1)'s and the R_b - R_c Crisis
LaTeX, 26 pages, 5 embedded EPSF figures. Version to be published in Phys. Rev. D
Phys. Rev. D 54, 4635 (1996)
10.1103/PhysRevD.54.4635
IASSNS-HEP-96/20
hep-ph
null
In this paper, we investigate the possibility of explaining both the R_b excess and the R_c deficit reported by the LEP experiments through Z-Z' mixing effects. We have constructed a set of models consistent with a restrictive set of principles: unification of the Standard Model (SM) gauge couplings, vector- like add...
[ { "created": "Mon, 4 Mar 1996 06:00:26 GMT", "version": "v1" }, { "created": "Mon, 4 Mar 1996 07:38:44 GMT", "version": "v2" }, { "created": "Tue, 26 Mar 1996 03:40:16 GMT", "version": "v3" }, { "created": "Fri, 12 Apr 1996 21:00:04 GMT", "version": "v4" }, { "cre...
2016-08-24
[ [ "Babu", "K. S.", "", "Institute for Advanced\n Study, Princeton" ], [ "Kolda", "Chris", "", "Institute for Advanced\n Study, Princeton" ], [ "March-Russell", "John", "", "Institute for Advanced\n Study, Princeton" ] ]
In this paper, we investigate the possibility of explaining both the R_b excess and the R_c deficit reported by the LEP experiments through Z-Z' mixing effects. We have constructed a set of models consistent with a restrictive set of principles: unification of the Standard Model (SM) gauge couplings, vector- like addit...
1603.08696
Giulia Pagliaroli
Giulia Pagliaroli and Natalia Di Marco and Massimo Mannarelli
Enhanced tau neutrino appearance through invisible decay
5 pages, 5 figures
Phys. Rev. D 93, 113011 (2016)
10.1103/PhysRevD.93.113011
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The decay of neutrino mass eigenstates leads to a change of the conversion and survival probability of neutrino flavor eigenstates. Remarkably, we find that the neutrino decay provides an enhancement of the expected tau appearance signal with respect to the standard oscillation scenario for the long-baseline OPERA ex...
[ { "created": "Tue, 29 Mar 2016 09:35:44 GMT", "version": "v1" } ]
2016-06-22
[ [ "Pagliaroli", "Giulia", "" ], [ "Di Marco", "Natalia", "" ], [ "Mannarelli", "Massimo", "" ] ]
The decay of neutrino mass eigenstates leads to a change of the conversion and survival probability of neutrino flavor eigenstates. Remarkably, we find that the neutrino decay provides an enhancement of the expected tau appearance signal with respect to the standard oscillation scenario for the long-baseline OPERA expe...
1112.3336
Nausheen Shah
Marcela Carena, Stefania Gori, Nausheen R. Shah, Carlos E. M. Wagner
A 125 GeV SM-like Higgs in the MSSM and the $\gamma \gamma$ rate
14 pages, 4 figures. Corrected small typos and added references
null
10.1007/JHEP03(2012)014
ANL-HEP-PR 88; EFI 11-35; FERMILAB-PUB-11-659-T
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider the possibility of a Standard Model (SM)-like Higgs in the context of the Minimal Supersymmetric Standard Model (MSSM), with a mass of about 125 GeV and with a production times decay rate into two photons which is similar or somewhat larger than the SM one. The relatively large value of the SM-like Higgs ...
[ { "created": "Wed, 14 Dec 2011 20:52:50 GMT", "version": "v1" }, { "created": "Wed, 28 Mar 2012 21:28:11 GMT", "version": "v2" } ]
2015-06-03
[ [ "Carena", "Marcela", "" ], [ "Gori", "Stefania", "" ], [ "Shah", "Nausheen R.", "" ], [ "Wagner", "Carlos E. M.", "" ] ]
We consider the possibility of a Standard Model (SM)-like Higgs in the context of the Minimal Supersymmetric Standard Model (MSSM), with a mass of about 125 GeV and with a production times decay rate into two photons which is similar or somewhat larger than the SM one. The relatively large value of the SM-like Higgs ma...
1705.10836
Anna Tokareva
Anna Tokareva
A minimal scale invariant axion solution to the strong CP-problem
null
null
10.1140/epjc/s10052-018-5883-0
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a scale invariant extension of the Standard model allowing for the Kim-Shifman-Vainstein-Zakharov (KSVZ) axion solution of the strong CP problem in QCD. We add the minimal number of new particles and show that the Peccei-Quinn scalar might be identified with the complex dilaton field. Scale invariance, tog...
[ { "created": "Tue, 30 May 2017 19:28:05 GMT", "version": "v1" }, { "created": "Thu, 7 Dec 2017 12:40:19 GMT", "version": "v2" } ]
2018-07-04
[ [ "Tokareva", "Anna", "" ] ]
We present a scale invariant extension of the Standard model allowing for the Kim-Shifman-Vainstein-Zakharov (KSVZ) axion solution of the strong CP problem in QCD. We add the minimal number of new particles and show that the Peccei-Quinn scalar might be identified with the complex dilaton field. Scale invariance, toget...
hep-ph/9711341
Piotr Zenczykowski
P. Zenczykowski (Institute of Nuclear Physics, Krakow, Poland)
Hara's theorem, quark model, and gamma_5-dependent renormalization constants
8 pages, LaTeX
Eur.Phys.J.C5:701-703,1998
10.1007/s100520050312
1777/PH
hep-ph
null
We discuss the applicability of gamma_5-dependent field renormalization as a means of renormalizing away the apparent violation of Hara's theorem observed in the quark model. It is pointed out that a result totally analogous to the violation of Hara's theorem is predicted by the quark model also for neutral baryons. ...
[ { "created": "Sat, 15 Nov 1997 10:07:59 GMT", "version": "v1" } ]
2011-09-13
[ [ "Zenczykowski", "P.", "", "Institute of Nuclear Physics, Krakow, Poland" ] ]
We discuss the applicability of gamma_5-dependent field renormalization as a means of renormalizing away the apparent violation of Hara's theorem observed in the quark model. It is pointed out that a result totally analogous to the violation of Hara's theorem is predicted by the quark model also for neutral baryons. Fo...
1406.1407
Alexei Smirnov Yu
Soebur Razzaque and A. Yu. Smirnov
Super-PINGU for measurement of the leptonic CP-phase with atmospheric neutrinos
PDFLatex, 14 figures. Discussion of effects of the systematic errors and flavor misidentification on sensitivity to the CP phase expanded; role of uncertainties in the 2 - 3 mixing explored. 3 new figures added
null
null
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We explore a possibility to measure the CP-violating phase $\delta$ using multi-megaton scale ice or water Cherenkov detectors with low, $(0.2 - 1)$ GeV, energy threshold assuming that the neutrino mass hierarchy is identified. We elaborate the relevant theoretical and phenomenological aspects of this possibility. Th...
[ { "created": "Thu, 5 Jun 2014 14:51:18 GMT", "version": "v1" }, { "created": "Sat, 8 Nov 2014 17:24:40 GMT", "version": "v2" }, { "created": "Tue, 19 May 2015 11:53:44 GMT", "version": "v3" } ]
2015-05-21
[ [ "Razzaque", "Soebur", "" ], [ "Smirnov", "A. Yu.", "" ] ]
We explore a possibility to measure the CP-violating phase $\delta$ using multi-megaton scale ice or water Cherenkov detectors with low, $(0.2 - 1)$ GeV, energy threshold assuming that the neutrino mass hierarchy is identified. We elaborate the relevant theoretical and phenomenological aspects of this possibility. The ...
2206.10277
Vladimir Galkin
R. N. Faustov, V. O. Galkin, Xian-Wei Kang
Relativistic description of the semileptonic decays of bottom mesons
24 pages, 5 figures, minor changes, references added, version to appear in Physical Review D
null
10.1103/PhysRevD.106.013004
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The form factors of the semileptonic $B$, $B_s$ and $B_c$ meson decays are calculated in the framework of the relativistic quark model based on the quasipotential approach in QCD. They are expressed through the overlap integrals of the meson wave function. All relativistic effects are consistently taken into account....
[ { "created": "Tue, 21 Jun 2022 11:54:19 GMT", "version": "v1" }, { "created": "Thu, 7 Jul 2022 13:18:46 GMT", "version": "v2" } ]
2022-07-27
[ [ "Faustov", "R. N.", "" ], [ "Galkin", "V. O.", "" ], [ "Kang", "Xian-Wei", "" ] ]
The form factors of the semileptonic $B$, $B_s$ and $B_c$ meson decays are calculated in the framework of the relativistic quark model based on the quasipotential approach in QCD. They are expressed through the overlap integrals of the meson wave function. All relativistic effects are consistently taken into account. T...
hep-ph/9705465
Farook M. Al-Shamali
F. M. Al-Shamali and A. N. Kamal
Nonfactorization and Final State Interactions in (B, B_s) --> \psi P and \psi V Decays
20 pages, LaTex, 4 figures, few minor corrections, to be published in Eur. Phys. J. C (1998)
Eur.Phys.J.C4:669-677,1998
10.1007/s100520050236
Alberta Thy-09-97
hep-ph
null
Available experimental data on decay rates for B --> \psi K, and decay rates and transversity amplitudes for B --> \psi K^* are used to investigate nonfactorization contributions in these decays using five different theoretical models for the formfactors. Using the knowledge on nonfactorization so gained, we study th...
[ { "created": "Thu, 29 May 1997 16:24:12 GMT", "version": "v1" }, { "created": "Tue, 17 Jun 1997 03:16:55 GMT", "version": "v2" }, { "created": "Thu, 21 Aug 1997 19:03:26 GMT", "version": "v3" }, { "created": "Wed, 10 Jun 1998 18:01:11 GMT", "version": "v4" } ]
2011-09-13
[ [ "Al-Shamali", "F. M.", "" ], [ "Kamal", "A. N.", "" ] ]
Available experimental data on decay rates for B --> \psi K, and decay rates and transversity amplitudes for B --> \psi K^* are used to investigate nonfactorization contributions in these decays using five different theoretical models for the formfactors. Using the knowledge on nonfactorization so gained, we study the ...
1305.3214
Tianjun Li
Taoli Cheng, Tianjun Li
Electroweak Supersymmetry (EWSUSY) in the NMSSM
Revtex4, 38 pages, 7 figures, 4 tables, version to appear in PRD
null
10.1103/PhysRevD.88.015031
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
To explain all the available experimental results, we have proposed the Electroweak Supersymmetry (EWSUSY) previously, where the squarks and/or gluino are heavy around a few TeVs while the sleptons, sneutrinos, Bino, Winos, and/or Higgsinos are light within one TeV. In the Next to Minimal Supersymmetric Standard Mode...
[ { "created": "Tue, 14 May 2013 17:17:48 GMT", "version": "v1" }, { "created": "Fri, 12 Jul 2013 05:59:20 GMT", "version": "v2" } ]
2013-08-09
[ [ "Cheng", "Taoli", "" ], [ "Li", "Tianjun", "" ] ]
To explain all the available experimental results, we have proposed the Electroweak Supersymmetry (EWSUSY) previously, where the squarks and/or gluino are heavy around a few TeVs while the sleptons, sneutrinos, Bino, Winos, and/or Higgsinos are light within one TeV. In the Next to Minimal Supersymmetric Standard Model ...
0906.1609
Shufang Su
Ethan M. Dolle and Shufang Su
The Inert Dark Matter
17 pages, 7 figures
Phys.Rev.D80:055012,2009
10.1103/PhysRevD.80.055012
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The lightest neutral scalar in the Inert Higgs Doublet Model is a natural candidate for WIMP dark matter. In this paper, we analyzed the dark matter relic density in the Inert Higgs Doublet model. Various theoretical and experimental constraints are taken into account. We found that there are five distinctive regions...
[ { "created": "Mon, 8 Jun 2009 21:53:42 GMT", "version": "v1" } ]
2009-09-24
[ [ "Dolle", "Ethan M.", "" ], [ "Su", "Shufang", "" ] ]
The lightest neutral scalar in the Inert Higgs Doublet Model is a natural candidate for WIMP dark matter. In this paper, we analyzed the dark matter relic density in the Inert Higgs Doublet model. Various theoretical and experimental constraints are taken into account. We found that there are five distinctive regions t...
2203.10040
Anthony Guillen
Ignatios Antoniadis, Anthony Guillen, Kyriakos Tamvakis
Addendum to "Ultraviolet behaviour of Higgs inflation models"
8 pages, 0 figures added preprint number
null
10.1007/JHEP05(2022)074
null
hep-ph astro-ph.CO gr-qc hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
This article is an addendum to [1]. We extend our computation of the on-shell scattering amplitudes in an arbitrary inflaton background $\bar{\phi}_1$. Although the effective Einstein frame cutoff for $\bar{\phi}_1>>M_P/\sqrt{\xi}$ turns out to be $\bar{\phi}_1$ or $\xi\bar{\phi}_1$ for the $U(1)$ model, this is not ...
[ { "created": "Fri, 18 Mar 2022 16:27:12 GMT", "version": "v1" }, { "created": "Mon, 11 Apr 2022 18:00:16 GMT", "version": "v2" } ]
2022-06-01
[ [ "Antoniadis", "Ignatios", "" ], [ "Guillen", "Anthony", "" ], [ "Tamvakis", "Kyriakos", "" ] ]
This article is an addendum to [1]. We extend our computation of the on-shell scattering amplitudes in an arbitrary inflaton background $\bar{\phi}_1$. Although the effective Einstein frame cutoff for $\bar{\phi}_1>>M_P/\sqrt{\xi}$ turns out to be $\bar{\phi}_1$ or $\xi\bar{\phi}_1$ for the $U(1)$ model, this is not th...
2009.02212
Cen Zhang
Benjamin Fuks, Yiming Liu, Cen Zhang, Shuang-Yong Zhou
Positivity in electron-positron scattering: testing the axiomatic quantum field theory principles and probing the existence of UV states
24 pages, 6 figures; typos corrected
Chin. Phys. C45 (2021) 023108
10.1088/1674-1137/abcd8c
USTC-ICTS/PCFT-20-25
hep-ph hep-ex hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider the positivity bounds on dimension-8 four-electron operators and study two related phenomenological aspects at future lepton colliders. First, if positivity is violated, probing such violations will revolutionize our understanding of the fundamental pillars of quantum field theory and the $S$-matrix theor...
[ { "created": "Fri, 4 Sep 2020 14:14:17 GMT", "version": "v1" }, { "created": "Wed, 20 Jan 2021 08:08:51 GMT", "version": "v2" } ]
2021-04-22
[ [ "Fuks", "Benjamin", "" ], [ "Liu", "Yiming", "" ], [ "Zhang", "Cen", "" ], [ "Zhou", "Shuang-Yong", "" ] ]
We consider the positivity bounds on dimension-8 four-electron operators and study two related phenomenological aspects at future lepton colliders. First, if positivity is violated, probing such violations will revolutionize our understanding of the fundamental pillars of quantum field theory and the $S$-matrix theory....
1212.1399
Alfredo Urbano
Wei-Chih Huang, Alfredo Urbano
What the top asymmetries tell us about single top production and Higgs decays
20 pages + appendices, 15 figures; v2: typos fixed, references added; v3: results scaled according to the modified top branching ratios; version accepted for publication in JHEP
null
10.1007/JHEP03(2013)079
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The top asymmetries measured at the Tevatron, and the discrepancy in the di-photon Higgs rate under investigation at the LHC represent two possible hints of physics beyond the Standard Model (SM). In this paper we address the possibility to explain and relate both these experimental anomalies with the help of an extr...
[ { "created": "Thu, 6 Dec 2012 18:03:32 GMT", "version": "v1" }, { "created": "Wed, 19 Dec 2012 13:42:25 GMT", "version": "v2" }, { "created": "Mon, 18 Feb 2013 17:12:45 GMT", "version": "v3" } ]
2015-06-12
[ [ "Huang", "Wei-Chih", "" ], [ "Urbano", "Alfredo", "" ] ]
The top asymmetries measured at the Tevatron, and the discrepancy in the di-photon Higgs rate under investigation at the LHC represent two possible hints of physics beyond the Standard Model (SM). In this paper we address the possibility to explain and relate both these experimental anomalies with the help of an extra ...
hep-ph/9408361
Jan Czyzewski
J. Czyzewski
Single Spin Asymmetry of Vector Meson Production as a Probe of Asymmetry of Parton Scattering
plain TeX, 6 pages (revised version, 2 corrected figures added in a compressed uuencoded PostScript file), HEN-377 (1994)
null
null
null
hep-ph
null
Azimuthal asymmetry of vector-meson production in single-transversely polarized proton-proton collisions ($p\up p$) is calculated in the string model of particle production. The asymmetry is generated only during fragmentation of a high-energy quark into hadrons. The obtained asymmetry of the $\rho^\pm$ is opposite i...
[ { "created": "Wed, 24 Aug 1994 17:06:49 GMT", "version": "v1" }, { "created": "Wed, 14 Sep 1994 17:26:07 GMT", "version": "v2" } ]
2009-09-25
[ [ "Czyzewski", "J.", "" ] ]
Azimuthal asymmetry of vector-meson production in single-transversely polarized proton-proton collisions ($p\up p$) is calculated in the string model of particle production. The asymmetry is generated only during fragmentation of a high-energy quark into hadrons. The obtained asymmetry of the $\rho^\pm$ is opposite in ...
2212.07290
Kazem Azizi
U. \"Ozdem, K. Azizi
Gravitational transition form factors of $N \rightarrow \Delta$ via QCD light-cone sum rules
18 Pages, 4 Figures and 2 Tables, To be published in JHEP
null
10.1007/JHEP03(2023)048
null
hep-ph hep-ex hep-lat
http://creativecommons.org/licenses/by/4.0/
We present the first direct calculation on the gravitational form factors (GFFs) of the $N \rightarrow \Delta$ transition using an analytic method, the QCD light-cone sum rules. The matrix element of the quark part of the energy momentum tensor current sandwiched between the nucleon and $\Delta$ states are parameteri...
[ { "created": "Wed, 14 Dec 2022 15:50:23 GMT", "version": "v1" }, { "created": "Sat, 18 Feb 2023 20:12:07 GMT", "version": "v2" } ]
2023-03-22
[ [ "Özdem", "U.", "" ], [ "Azizi", "K.", "" ] ]
We present the first direct calculation on the gravitational form factors (GFFs) of the $N \rightarrow \Delta$ transition using an analytic method, the QCD light-cone sum rules. The matrix element of the quark part of the energy momentum tensor current sandwiched between the nucleon and $\Delta$ states are parameterize...
2012.03042
M. E. Carrington
Margaret E. Carrington, Alina Czajka and Stanislaw Mrowczynski
The energy-momentum tensor at the earliest stage of relativistic heavy ion collisions
41 pages, 6 figures, published version
Eur. Phys. J. A58, 5 (2022)
10.1140/epja/s10050-021-00600-x
null
hep-ph nucl-th
http://creativecommons.org/licenses/by/4.0/
Nuclear collisions at high energies produce a gluon field that can be described using the Colour Glass Condensate (CGC) effective theory at proper times $\tau \lesssim 1$ fm/c. The theory can be used to calculate the gluon energy-momentum tensor, which provides information about the early time evolution of the chromo...
[ { "created": "Sat, 5 Dec 2020 14:44:11 GMT", "version": "v1" }, { "created": "Fri, 14 May 2021 12:09:06 GMT", "version": "v2" }, { "created": "Sun, 30 Jan 2022 15:37:45 GMT", "version": "v3" } ]
2022-02-09
[ [ "Carrington", "Margaret E.", "" ], [ "Czajka", "Alina", "" ], [ "Mrowczynski", "Stanislaw", "" ] ]
Nuclear collisions at high energies produce a gluon field that can be described using the Colour Glass Condensate (CGC) effective theory at proper times $\tau \lesssim 1$ fm/c. The theory can be used to calculate the gluon energy-momentum tensor, which provides information about the early time evolution of the chromo-e...
1502.07569
Yu. A. Simonov
Yu. A. Simonov (Institute of Theoretical and Experimental Physics, Moscow, Russia)
Lepton decay constants of light mesons
20 pages,references added
null
10.1134/S1063778816030169
null
hep-ph hep-lat
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A theory of lepton decay constants based on the path-integral formalism is given for chiral and vector mesons. Decay constants of the pseudoscalar and vector mesons are calculated and compared to other existing results.
[ { "created": "Thu, 26 Feb 2015 14:29:10 GMT", "version": "v1" }, { "created": "Mon, 16 Mar 2015 14:57:23 GMT", "version": "v2" } ]
2016-07-20
[ [ "Simonov", "Yu. A.", "", "Institute of Theoretical and Experimental Physics,\n Moscow, Russia" ] ]
A theory of lepton decay constants based on the path-integral formalism is given for chiral and vector mesons. Decay constants of the pseudoscalar and vector mesons are calculated and compared to other existing results.
1706.08240
Diego Restrepo
Ernest Ma, Diego Restrepo, and Oscar Zapata
Anomalous leptonic U(1) symmetry: Syndetic origin of the QCD axion, weak-scale dark matter, and radiative neutrino mass
14 pages, 3 figures
Mod. Phys. Lett. A, Vol. 33, No. 3 (2018) 1850024
10.1142/S0217732318500244
UCRHEP-T579
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The well-known leptonic U(1) symmetry of the standard model of quarks and leptons is extended to include a number of new fermions and scalars. The resulting theory has an invisible QCD axion (thereby solving the strong CP problem), a candidate for weak-scale dark matter, as well as radiative neutrino masses. A possib...
[ { "created": "Mon, 26 Jun 2017 06:15:40 GMT", "version": "v1" } ]
2018-01-25
[ [ "Ma", "Ernest", "" ], [ "Restrepo", "Diego", "" ], [ "Zapata", "Oscar", "" ] ]
The well-known leptonic U(1) symmetry of the standard model of quarks and leptons is extended to include a number of new fermions and scalars. The resulting theory has an invisible QCD axion (thereby solving the strong CP problem), a candidate for weak-scale dark matter, as well as radiative neutrino masses. A possible...
hep-ph/0103040
Salvatore Mele
Salvatore Mele (CERN)
Indirect Determination of the Vertex and Angles of the Unitarity Triangle
Presented at the 5th International Symposium on Radiative Corrections (RADCOR-2000) Carmel CA, USA, 11-15 September, 2000
null
null
null
hep-ph
null
The values of the elements of the Cabibbo-Kobayashi-Maskawa matrix are constrained by direct and indirect measurements. A fit to experimental data and theory calculations allows the indirect determination of the vertex and angles of the unitarity triangle as: rho = 0.18 +/- 0.07 eta = 0.35 +/- 0.05 sin 2alpha = 0.14 ...
[ { "created": "Sat, 3 Mar 2001 21:45:48 GMT", "version": "v1" } ]
2007-05-23
[ [ "Mele", "Salvatore", "", "CERN" ] ]
The values of the elements of the Cabibbo-Kobayashi-Maskawa matrix are constrained by direct and indirect measurements. A fit to experimental data and theory calculations allows the indirect determination of the vertex and angles of the unitarity triangle as: rho = 0.18 +/- 0.07 eta = 0.35 +/- 0.05 sin 2alpha = 0.14 +0...
2405.20890
Kai Ma
Kai Ma, Lin-Yun He
Constraining Gluonic Contact Interaction of a Neutrino-philic Dark Fermion at Hadron Colliders and Direct Detection Experiments
32 pages, 7 captioned figures; 1 figure and 3 tables in the Appendix
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Weakly interacting fermion with the Standard Model particles is a promising candidate of the genuine dark matter. In this paper, we study signatures of the gluonic interactions of a dark fermion and a neutrino at hadron colliders and direct detection experiments. The lowest order interactions are described by contact...
[ { "created": "Fri, 31 May 2024 15:02:05 GMT", "version": "v1" } ]
2024-06-03
[ [ "Ma", "Kai", "" ], [ "He", "Lin-Yun", "" ] ]
Weakly interacting fermion with the Standard Model particles is a promising candidate of the genuine dark matter. In this paper, we study signatures of the gluonic interactions of a dark fermion and a neutrino at hadron colliders and direct detection experiments. The lowest order interactions are described by contact o...
1808.07517
Gian Paolo Vacca
J. Bartels, C. Contreras and G. P. Vacca
A functional RG approach for the BFKL Pomeron
46 pages, 27 figures, latex (one figure added, a reference corrected)
null
10.1007/JHEP01(2019)004
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this paper we encode the perturbative BFKL leading logarithmic resummation, relevant for the Regge limit behavior of QCD scattering amplitudes, in the IR-regulated effective action which satisfies exact functional renormalization group equations. This is obtained using a truncation with a specific infinite set of ...
[ { "created": "Wed, 22 Aug 2018 18:31:55 GMT", "version": "v1" }, { "created": "Thu, 6 Sep 2018 16:45:44 GMT", "version": "v2" } ]
2019-01-30
[ [ "Bartels", "J.", "" ], [ "Contreras", "C.", "" ], [ "Vacca", "G. P.", "" ] ]
In this paper we encode the perturbative BFKL leading logarithmic resummation, relevant for the Regge limit behavior of QCD scattering amplitudes, in the IR-regulated effective action which satisfies exact functional renormalization group equations. This is obtained using a truncation with a specific infinite set of no...
1209.2853
Heikki M\"antysaari
T. Lappi, H. M\"antysaari
Forward dihadron correlations in deuteron-gold collisions with a Gaussian approximation of JIMWLK
15 pages, 12 figures, RevTeX. v2: Published in Nucl. Phys. A
Nucl.Phys. A908 (2013) 51-72
10.1016/j.nuclphysa.2013.03.017
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We compute dihadron correlations in forward deuteron-gold or proton-gold collisions. The running coupling BK equation is used to calculate the energy dependence of the dipole cross sections and extended to higher point Wilson line correlators using a factorized Gaussian approximation. Unlike some earlier works we inc...
[ { "created": "Thu, 13 Sep 2012 11:16:12 GMT", "version": "v1" }, { "created": "Wed, 10 Apr 2013 10:58:36 GMT", "version": "v2" } ]
2013-04-11
[ [ "Lappi", "T.", "" ], [ "Mäntysaari", "H.", "" ] ]
We compute dihadron correlations in forward deuteron-gold or proton-gold collisions. The running coupling BK equation is used to calculate the energy dependence of the dipole cross sections and extended to higher point Wilson line correlators using a factorized Gaussian approximation. Unlike some earlier works we inclu...
1808.05483
Francesco Giovanni Celiberto
Andr\`ee Dafne Bolognino, Francesco Giovanni Celiberto, Dmitry Yu. Ivanov, Mohammed M.A. Mohammed, Alessandro Papa
Hadron-jet correlations in high-energy hadronic collisions at the LHC
19 pages, 6 figures; few typos corrected and one reference updated during proof reading; version published on Eur. Phys. J. C. arXiv admin note: text overlap with arXiv:1701.05077
null
10.1140/epjc/s10052-018-6253-7
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The inclusive production at the LHC of a charged light hadron and of a jet, featuring a wide separation in rapidity, is suggested as a new probe process for the investigation of the BFKL mechanism of resummation of energy logarithms in the QCD perturbative series. We present some predictions, tailored on the CMS and ...
[ { "created": "Wed, 15 Aug 2018 11:16:37 GMT", "version": "v1" }, { "created": "Fri, 28 Sep 2018 14:26:24 GMT", "version": "v2" } ]
2020-08-05
[ [ "Bolognino", "Andrèe Dafne", "" ], [ "Celiberto", "Francesco Giovanni", "" ], [ "Ivanov", "Dmitry Yu.", "" ], [ "Mohammed", "Mohammed M. A.", "" ], [ "Papa", "Alessandro", "" ] ]
The inclusive production at the LHC of a charged light hadron and of a jet, featuring a wide separation in rapidity, is suggested as a new probe process for the investigation of the BFKL mechanism of resummation of energy logarithms in the QCD perturbative series. We present some predictions, tailored on the CMS and CA...
2108.12440
Timothy Hapitas
Timothy Hapitas, Douglas Tuckler, Yue Zhang
General Kinetic Mixing in Gauged $U(1)_{L_\mu-L_\tau}$ Model for Muon $g-2$ and Dark Matter
25 pages, 11 figures
null
10.1103/PhysRevD.105.016014
null
hep-ph astro-ph.CO hep-ex
http://creativecommons.org/licenses/by/4.0/
The gauged $U(1)_{L_\mu-L_\tau}$ extension of the Standard Model is a very simple framework that can alleviate the tension in muon anomalous magnetic dipole moment, reinforced by the recent Fermilab measurement. We explore experimental probes of the $(g-2)_\mu$ target with a general treatment of kinetic mixing betwee...
[ { "created": "Fri, 27 Aug 2021 18:00:17 GMT", "version": "v1" } ]
2022-02-02
[ [ "Hapitas", "Timothy", "" ], [ "Tuckler", "Douglas", "" ], [ "Zhang", "Yue", "" ] ]
The gauged $U(1)_{L_\mu-L_\tau}$ extension of the Standard Model is a very simple framework that can alleviate the tension in muon anomalous magnetic dipole moment, reinforced by the recent Fermilab measurement. We explore experimental probes of the $(g-2)_\mu$ target with a general treatment of kinetic mixing between ...
hep-ph/9512323
Shailesh Chandrasekharan
Shailesh Chandrasekharan and Suzhou Huang
$Z_3$ Twisted Chiral Condensates in QCD at Finite Temperatures
10 Pages including 2 figures, Latex{ReVTex} source file. Figures included seperately as figures.uu
Phys.Rev. D53 (1996) 5100-5104
10.1103/PhysRevD.53.5100
MIT-CTP-2495
hep-ph hep-lat
null
It was recently observed in a lattice QCD measurement that the chiral condensate in the quenched approximation shows dramatically different behavior in the three $Z_3$-equivalent de-confined phases. We argue that this phenomenon can be understood qualitatively as an effect of $Z_3$ twists on fermionic fields. Quarks ...
[ { "created": "Mon, 18 Dec 1995 01:00:40 GMT", "version": "v1" } ]
2009-10-28
[ [ "Chandrasekharan", "Shailesh", "" ], [ "Huang", "Suzhou", "" ] ]
It was recently observed in a lattice QCD measurement that the chiral condensate in the quenched approximation shows dramatically different behavior in the three $Z_3$-equivalent de-confined phases. We argue that this phenomenon can be understood qualitatively as an effect of $Z_3$ twists on fermionic fields. Quarks un...
hep-ph/0212328
G. R. Filewood
G. Filewood
Delta baryons in the separation geometry model
latex2e document; 8 pages Correction of $\Delta^{++}$ mass calculation and revised discussion
null
null
null
hep-ph
null
Extension of the separation geometry model of baryon structure from physics/0109024 and hep-ph/0201270 to the spin 2/3 Delta baryons. Theoretically derived masses in Mev; $\Delta^{++}=1240.0, \Delta^-=1243.4, \Delta^0=1233.9, \Delta^+=1232.6$. The first value differs considerably from the empirical value. Mass differ...
[ { "created": "Sun, 22 Dec 2002 07:10:32 GMT", "version": "v1" }, { "created": "Tue, 24 Dec 2002 05:51:41 GMT", "version": "v2" }, { "created": "Wed, 1 Jan 2003 07:15:44 GMT", "version": "v3" } ]
2007-05-23
[ [ "Filewood", "G.", "" ] ]
Extension of the separation geometry model of baryon structure from physics/0109024 and hep-ph/0201270 to the spin 2/3 Delta baryons. Theoretically derived masses in Mev; $\Delta^{++}=1240.0, \Delta^-=1243.4, \Delta^0=1233.9, \Delta^+=1232.6$. The first value differs considerably from the empirical value. Mass differen...