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hep-ph/9502336
W. James Stirling
A.D.Martin, R.G.Roberts, W.J.Stirling
Pinning down the Glue in the Proton
8 pages, LATEX, 6 figs available as .uu file
Phys.Lett.B354:155-162,1995
10.1016/0370-2693(95)00646-3
DTP/95/14
hep-ph
null
The latest measurements of $F_2$ at HERA allow for a {\it combination} of gluon and sea quark distributions at small $x$ that is significantly different from those of existing parton sets. We perform a new global fit to deep-inelastic and related data. We find a gluon distribution which is larger for $x \lapproxeq 0....
[ { "created": "Fri, 17 Feb 1995 10:06:44 GMT", "version": "v1" } ]
2016-09-01
[ [ "Martin", "A. D.", "" ], [ "Roberts", "R. G.", "" ], [ "Stirling", "W. J.", "" ] ]
The latest measurements of $F_2$ at HERA allow for a {\it combination} of gluon and sea quark distributions at small $x$ that is significantly different from those of existing parton sets. We perform a new global fit to deep-inelastic and related data. We find a gluon distribution which is larger for $x \lapproxeq 0.01...
hep-ph/0002177
Amol Dighe
K.R.S. Balaji (IMSc), Amol S. Dighe (CERN), R.N. Mohapatra (Maryland), M.K. Parida (NEHU)
Radiative magnification of neutrino mixings and a natural explanation of the neutrino anomalies
14 pages RevTex, 2 eps figures
Phys.Lett. B481 (2000) 33-38
10.1016/S0370-2693(00)00410-X
CERN-TH/2000-044, IMSc/2000/02/04, UMD-PP-00-054
hep-ph
null
We show that the neutrino mixing pattern with the large mixing required for the atmospheric neutrino problem and the small mixing angle MSW solution for the solar neutrino problem can be naturally generated through radiative magnification, even though all the mixing angles at the seesaw scale may be small. This can a...
[ { "created": "Wed, 16 Feb 2000 17:59:22 GMT", "version": "v1" } ]
2009-10-31
[ [ "Balaji", "K. R. S.", "", "IMSc" ], [ "Dighe", "Amol S.", "", "CERN" ], [ "Mohapatra", "R. N.", "", "Maryland" ], [ "Parida", "M. K.", "", "NEHU" ] ]
We show that the neutrino mixing pattern with the large mixing required for the atmospheric neutrino problem and the small mixing angle MSW solution for the solar neutrino problem can be naturally generated through radiative magnification, even though all the mixing angles at the seesaw scale may be small. This can acc...
hep-ph/9305272
null
Alex Pomarol and Roberto Vega
Constraints on CP violation in the Higgs sector from the $\rho$ parameter
19 pages, 2 figures (not included), SLAC-PUB-6196
Nucl.Phys.B413:3-15,1994
10.1016/0550-3213(94)90611-4
null
hep-ph
null
We discuss the relation between the CP symmetry and the custodial $SU(2)$ symmetry in the Higgs sector. In particular, we show that CP violation in the Higgs-gauge sector is allowed only if the custodial $SU(2)$ symmetry is broken. We exploit these facts to constrain CP violation using the experimental bounds on $\rh...
[ { "created": "Sat, 15 May 1993 03:28:00 GMT", "version": "v1" } ]
2010-11-01
[ [ "Pomarol", "Alex", "" ], [ "Vega", "Roberto", "" ] ]
We discuss the relation between the CP symmetry and the custodial $SU(2)$ symmetry in the Higgs sector. In particular, we show that CP violation in the Higgs-gauge sector is allowed only if the custodial $SU(2)$ symmetry is broken. We exploit these facts to constrain CP violation using the experimental bounds on $\rho-...
1606.00019
Matthew Dolan
Matthew J. Dolan, Michael Spannowsky, Qi Wang, Zhao-Huan Yu
Determining the Quantum Numbers of Simplified Models in $t\bar{t}X$ production at the LHC
10 pages, 8 figures; v2: text and references added
Phys. Rev. D 94, 015025 (2016)
10.1103/PhysRevD.94.015025
IPPP/16/47, DCPT/16/94
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Simplified models provide an avenue for characterising and exploring New Physics for large classes of UV theories. In this article we study the ability of the LHC to probe the spin and parity quantum numbers of a new light resonance $X$ which couples predominantly to the third generation quarks in a variety of simpli...
[ { "created": "Tue, 31 May 2016 20:02:01 GMT", "version": "v1" }, { "created": "Thu, 9 Jun 2016 00:34:18 GMT", "version": "v2" } ]
2016-07-27
[ [ "Dolan", "Matthew J.", "" ], [ "Spannowsky", "Michael", "" ], [ "Wang", "Qi", "" ], [ "Yu", "Zhao-Huan", "" ] ]
Simplified models provide an avenue for characterising and exploring New Physics for large classes of UV theories. In this article we study the ability of the LHC to probe the spin and parity quantum numbers of a new light resonance $X$ which couples predominantly to the third generation quarks in a variety of simplifi...
1905.13581
Yong Xu
Manuel Drees, Yong Xu
Overshooting, Critical Higgs Inflation and Second Order Gravitational Wave Signatures
v3: updated Fig.11 by considering the kinematic effect of dark energy on the induced GW signatures; main conclusions remain unchanged; version published in EPJC
Eur. Phys. J. C 81, 182(2021)
10.1140/epjc/s10052-021-08976-2
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The self coupling $\lambda$ of the Higgs boson in the Standard Model may show critical behavior, i.e. the Higgs potential may have a point at an energy scale $\sim 10^{17-18}$ GeV where both the first and second derivatives (almost) vanish. In this case the Higgs boson can serve as inflaton even if its nonminimal cou...
[ { "created": "Fri, 31 May 2019 12:43:04 GMT", "version": "v1" }, { "created": "Mon, 14 Oct 2019 08:59:23 GMT", "version": "v2" }, { "created": "Wed, 24 Feb 2021 14:38:03 GMT", "version": "v3" } ]
2021-02-25
[ [ "Drees", "Manuel", "" ], [ "Xu", "Yong", "" ] ]
The self coupling $\lambda$ of the Higgs boson in the Standard Model may show critical behavior, i.e. the Higgs potential may have a point at an energy scale $\sim 10^{17-18}$ GeV where both the first and second derivatives (almost) vanish. In this case the Higgs boson can serve as inflaton even if its nonminimal coupl...
1203.4646
Juergen Berges
J. Berges, S. Schlichting, D. Sexty
Over-populated gauge fields on the lattice
15 pages, 4 figures
null
10.1103/PhysRevD.86.074006
null
hep-ph hep-lat nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study nonequilibrium dynamics of SU(2) pure gauge theory starting from initial over-population, where intense classical gauge fields are characterized by a single momentum scale Q_s. Classical-statistical lattice simulations indicate a quick evolution towards an approximate scaling behavior with exponent 3/2 at in...
[ { "created": "Wed, 21 Mar 2012 03:48:41 GMT", "version": "v1" } ]
2013-05-30
[ [ "Berges", "J.", "" ], [ "Schlichting", "S.", "" ], [ "Sexty", "D.", "" ] ]
We study nonequilibrium dynamics of SU(2) pure gauge theory starting from initial over-population, where intense classical gauge fields are characterized by a single momentum scale Q_s. Classical-statistical lattice simulations indicate a quick evolution towards an approximate scaling behavior with exponent 3/2 at inte...
hep-ph/0603072
Feng-Kun Guo
Feng-Kun Guo, Peng-Nian Shen, Huan-Ching Chiang, Rong-Gang Ping, Bing-Song Zou
Dynamically generated 0^+ heavy mesons in a heavy chiral unitary approach
15 pages, 1 figure. One numerical error in Eq.16 corrected
Phys.Lett.B641:278-285,2006
10.1016/j.physletb.2006.08.064
null
hep-ph
null
In terms of the heavy chiral Lagrangian and the unitarized coupled-channel scattering amplitude, interaction between the heavy meson and the light pseudoscalar meson is studied. By looking for the pole of scattering matrix on an appropriate Riemann sheet, a $DK$ bound state $D_{s0}^*$ with the mass of $2.312\pm0.041$...
[ { "created": "Thu, 9 Mar 2006 13:57:14 GMT", "version": "v1" }, { "created": "Mon, 3 Apr 2006 10:57:24 GMT", "version": "v2" }, { "created": "Wed, 6 Sep 2006 11:00:07 GMT", "version": "v3" }, { "created": "Sat, 7 Oct 2006 10:37:14 GMT", "version": "v4" } ]
2008-11-26
[ [ "Guo", "Feng-Kun", "" ], [ "Shen", "Peng-Nian", "" ], [ "Chiang", "Huan-Ching", "" ], [ "Ping", "Rong-Gang", "" ], [ "Zou", "Bing-Song", "" ] ]
In terms of the heavy chiral Lagrangian and the unitarized coupled-channel scattering amplitude, interaction between the heavy meson and the light pseudoscalar meson is studied. By looking for the pole of scattering matrix on an appropriate Riemann sheet, a $DK$ bound state $D_{s0}^*$ with the mass of $2.312\pm0.041$ G...
hep-ph/9409447
Department of Theoretical Physics
A.A.Gvozdev, N.V.Mikheev and L.A.Vassilevskaya
One More Source of Information on the Lepton Mixing Angles
(talk given at the VIII International Seminar "Quarks-94", Vladimir, Russia, May 11-18, 1994), 5 pages, LaTeX (uses world_sci.sty, and bezier.sty file appended), Yaroslavl, Yaroslavl State University preprint YARU-HE-94/05
null
null
null
hep-ph
null
In the framework of the Standard Model with lepton mixing the radiative decay $\nu_i \rightarrow \nu_j \gamma$ of a neutrino of high ($E_\nu \sim 100 \, GeV$) and super-high ($E_\nu \ge 1 \, TeV$) energy is investigated in the Coulomb field of a nucleus. Estimates of the decay probability and ``decay cross-section'' ...
[ { "created": "Fri, 30 Sep 1994 09:20:28 GMT", "version": "v1" } ]
2007-05-23
[ [ "Gvozdev", "A. A.", "" ], [ "Mikheev", "N. V.", "" ], [ "Vassilevskaya", "L. A.", "" ] ]
In the framework of the Standard Model with lepton mixing the radiative decay $\nu_i \rightarrow \nu_j \gamma$ of a neutrino of high ($E_\nu \sim 100 \, GeV$) and super-high ($E_\nu \ge 1 \, TeV$) energy is investigated in the Coulomb field of a nucleus. Estimates of the decay probability and ``decay cross-section'' fo...
2401.02397
Yu Hamada
Tomohiro Abe, Yu Hamada, and Koji Tsumura
A model of pseudo-Nambu-Goldstone dark matter with two complex scalars
31 pages, 10 figures; v2 published version
null
null
KEK-TH-2589, DESY-24-002, KYUSHU-HET-277
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Pseudo-Nambu-Goldstone (pNG) dark matter (DM) is a promising DM candidate and able to explain the measured DM abundance by the thermal freeze-out mechanism evading the stringent bound from DM direct detection experiments. We propose a new model providing a pNG DM by introducing two Standard-Model-singlet complex scal...
[ { "created": "Thu, 4 Jan 2024 18:24:12 GMT", "version": "v1" }, { "created": "Tue, 30 Apr 2024 16:24:33 GMT", "version": "v2" } ]
2024-05-01
[ [ "Abe", "Tomohiro", "" ], [ "Hamada", "Yu", "" ], [ "Tsumura", "Koji", "" ] ]
Pseudo-Nambu-Goldstone (pNG) dark matter (DM) is a promising DM candidate and able to explain the measured DM abundance by the thermal freeze-out mechanism evading the stringent bound from DM direct detection experiments. We propose a new model providing a pNG DM by introducing two Standard-Model-singlet complex scalar...
1407.8232
Gregory Adkins
Gregory S. Adkins, Christian Parsons, M. D. Salinger, Ruihan Wang, and Richard N. Fell
Positronium energy levels at order $m \alpha^7$: light-by-light scattering in the two-photon-annihilation channel
9 pages, 1 figure
Phys. Rev. A 90, 042502 (2014)
10.1103/PhysRevA.90.042502
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Recent and ongoing experimental work on the positronium spectrum motivates new efforts to calculate positronium energy levels at the level of three loop corrections. We have obtained results for one set of such corrections involving light-by-light scattering of the photons produced in a two-photon virtual annihilatio...
[ { "created": "Wed, 30 Jul 2014 22:20:47 GMT", "version": "v1" } ]
2014-10-08
[ [ "Adkins", "Gregory S.", "" ], [ "Parsons", "Christian", "" ], [ "Salinger", "M. D.", "" ], [ "Wang", "Ruihan", "" ], [ "Fell", "Richard N.", "" ] ]
Recent and ongoing experimental work on the positronium spectrum motivates new efforts to calculate positronium energy levels at the level of three loop corrections. We have obtained results for one set of such corrections involving light-by-light scattering of the photons produced in a two-photon virtual annihilation ...
1911.11075
Junichiro Kawamura
Junichiro Kawamura, Stuart Raby and Andreas Trautner
Complete Vector-like Fourth Family with $\mathrm{U(1)}^\prime$: A Global Analysis
80 pages, 9 figures and 21 tables
Phys. Rev. D 101, 035026 (2020)
10.1103/PhysRevD.101.035026
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this paper we present an in-depth analysis of a recently proposed Standard Model extension with a complete fourth generation of quarks and leptons, which are vector-like with respect to the Standard Model gauge group and charged under a new spontaneously broken vector-like $\mathrm{U(1)^\prime}$ gauge symmetry. Th...
[ { "created": "Mon, 25 Nov 2019 17:29:23 GMT", "version": "v1" } ]
2020-02-26
[ [ "Kawamura", "Junichiro", "" ], [ "Raby", "Stuart", "" ], [ "Trautner", "Andreas", "" ] ]
In this paper we present an in-depth analysis of a recently proposed Standard Model extension with a complete fourth generation of quarks and leptons, which are vector-like with respect to the Standard Model gauge group and charged under a new spontaneously broken vector-like $\mathrm{U(1)^\prime}$ gauge symmetry. The ...
hep-ph/0309137
K. A. Oganessyan
Leonard P. Gamberg, Gary R. Goldstein, Karo A. Oganessyan
Nucleon Transversity Properties Through ep Scattering
10 pages, 5 figures, on the basis of the talks delivered by K.O. at DIS2003, XI International Workshop on Deep Inelastic Scattering, St. Petersburg, 23-27 April, 2003
null
null
null
hep-ph
null
The T-odd distribution functions contributing to transversity properties of the nucleon and their role in fueling nontrivial contributions to azimuthal asymmetries in semi-inclusive deep inelastic scattering are investigated. We use a dynamical model to evaluate these quantities in terms of HERMES kinematics. We poin...
[ { "created": "Fri, 12 Sep 2003 18:17:19 GMT", "version": "v1" } ]
2007-05-23
[ [ "Gamberg", "Leonard P.", "" ], [ "Goldstein", "Gary R.", "" ], [ "Oganessyan", "Karo A.", "" ] ]
The T-odd distribution functions contributing to transversity properties of the nucleon and their role in fueling nontrivial contributions to azimuthal asymmetries in semi-inclusive deep inelastic scattering are investigated. We use a dynamical model to evaluate these quantities in terms of HERMES kinematics. We point ...
hep-ph/0606247
Alexander Smirnov
A.V. Smirnov, V.A. Smirnov
S-bases as a tool to solve reduction problems for Feynman integrals
5 pages, uses espcrc2.sty
Nucl.Phys.Proc.Suppl.160:80-84,2006
10.1016/j.nuclphysbps.2006.09.032
null
hep-ph
null
We suggest a mathematical definition of the notion of master integrals and present a brief review of algorithmic methods to solve reduction problems for Feynman integrals based on integration by parts relations. In particular, we discuss a recently suggested reduction algorithm which uses Groebner bases. New results ...
[ { "created": "Thu, 22 Jun 2006 20:07:57 GMT", "version": "v1" } ]
2008-11-26
[ [ "Smirnov", "A. V.", "" ], [ "Smirnov", "V. A.", "" ] ]
We suggest a mathematical definition of the notion of master integrals and present a brief review of algorithmic methods to solve reduction problems for Feynman integrals based on integration by parts relations. In particular, we discuss a recently suggested reduction algorithm which uses Groebner bases. New results ob...
0808.1220
Andrius Bernotas
Andrius Bernotas and Vytautas \v{S}imonis
Heavy hadron spectroscopy and the bag model
18 pages, 9 tables, references to experiments updated, rms deviations given in some tables
Lith.J.Phys.49:19-28,2009
10.3952/lithjphys.49110
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Some time ago a slightly improved variant of bag model (the modified bag model) suitable for the unified description of light and heavy hadrons was developed. The main goal of the present work was to calculate the masses of the ground state baryons containing bottom quarks in the framework of this model. For complete...
[ { "created": "Fri, 8 Aug 2008 14:24:56 GMT", "version": "v1" }, { "created": "Fri, 12 Feb 2010 14:12:44 GMT", "version": "v2" } ]
2011-07-21
[ [ "Bernotas", "Andrius", "" ], [ "Šimonis", "Vytautas", "" ] ]
Some time ago a slightly improved variant of bag model (the modified bag model) suitable for the unified description of light and heavy hadrons was developed. The main goal of the present work was to calculate the masses of the ground state baryons containing bottom quarks in the framework of this model. For completene...
hep-ph/0505068
Hrachia Asatrian M
H.M. Asatrian, C. Greub, A. Hovhannisyan, T. Hurth and V. Poghosyan
Reduction of Charm Quark Mass Scheme Dependence in $\bar B \to X_s \gamma$ at the NNLL Level
13 pages including 3 figures
Phys.Lett.B619:322-332,2005
10.1016/j.physletb.2005.05.080
CERN-PH-TH/2005-079, SLAC-PUB-11177
hep-ph
null
The uncertainty of the theoretical prediction of the $\bar B \to X_s \gamma$ branching ratio at NLL level is dominated by the charm mass renormalization scheme ambiguity. In this paper we calculate those NNLL terms which are related to the renormalization of $m_c$, in order to get an estimate of the corresponding unc...
[ { "created": "Tue, 10 May 2005 15:09:31 GMT", "version": "v1" }, { "created": "Tue, 14 Jun 2005 10:36:13 GMT", "version": "v2" } ]
2011-01-05
[ [ "Asatrian", "H. M.", "" ], [ "Greub", "C.", "" ], [ "Hovhannisyan", "A.", "" ], [ "Hurth", "T.", "" ], [ "Poghosyan", "V.", "" ] ]
The uncertainty of the theoretical prediction of the $\bar B \to X_s \gamma$ branching ratio at NLL level is dominated by the charm mass renormalization scheme ambiguity. In this paper we calculate those NNLL terms which are related to the renormalization of $m_c$, in order to get an estimate of the corresponding uncer...
hep-ph/9708332
Saurabh D. Rindani
P. Poulose and Saurabh D. Rindani
CP-violating dipole form factors of the top quark and tau lepton in scalar leptoquark models
22 pages, LaTeX, includes 14 figures in postscript files
Pramana 51 (1998) 387-403
10.1007/BF02828932
PRL-TH-97/24
hep-ph
null
We calculate the CP-violating electric and weak dipole form factors of the top quark and the tau lepton in models with scalar leptoquarks coupling only to the third generation of quarks and leptons. We obtain numerical values of the real and imaginary parts of these form factors at various energies for different valu...
[ { "created": "Wed, 13 Aug 1997 12:29:08 GMT", "version": "v1" } ]
2009-10-30
[ [ "Poulose", "P.", "" ], [ "Rindani", "Saurabh D.", "" ] ]
We calculate the CP-violating electric and weak dipole form factors of the top quark and the tau lepton in models with scalar leptoquarks coupling only to the third generation of quarks and leptons. We obtain numerical values of the real and imaginary parts of these form factors at various energies for different values...
0904.1450
Boris Blok
B. Blok, L. Frankfurt, M. Strikman
Increase with energy of parton transverse momenta in the fragmentation region in DIS and related phenomena
37 pages, 6 figures, uses file pdfsync.sty some typos and misspellings are eliminated
Phys.Rev.D80:114009,2009
10.1103/PhysRevD.80.114009
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The dipole and the DGLAP approximations are combined with the $k_t$ factorization theorem to demonstrate the fundamental property of pQCD: smaller is the size of the colorless quark-gluon configurations in the fragmentation region, more rapid is the increase of its interaction with the target as a function of energy....
[ { "created": "Thu, 9 Apr 2009 01:22:12 GMT", "version": "v1" }, { "created": "Tue, 13 Oct 2009 17:06:22 GMT", "version": "v2" } ]
2009-12-30
[ [ "Blok", "B.", "" ], [ "Frankfurt", "L.", "" ], [ "Strikman", "M.", "" ] ]
The dipole and the DGLAP approximations are combined with the $k_t$ factorization theorem to demonstrate the fundamental property of pQCD: smaller is the size of the colorless quark-gluon configurations in the fragmentation region, more rapid is the increase of its interaction with the target as a function of energy. F...
1408.6071
Dr. Rukmani Mohanta
C. Soumya, K. N. Deepthi and R. Mohanta
A comprehensive study of the discovery potential of NOvA, T2K and T2HK experiments
23 pages, 10 figures, version to appear in Advances in High Energy Physics
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
With the recent measurement of reactor mixing angle $\theta_{13}$ the knowledge of neutrino oscillation parameters that describe PMNS matrix has improved significantly except the CP violating phase $\delta_{CP}$. The other unknown parameters in neutrino oscillation studies are mass hierarchy and the octant of the atm...
[ { "created": "Tue, 26 Aug 2014 11:07:19 GMT", "version": "v1" }, { "created": "Wed, 22 Oct 2014 11:20:52 GMT", "version": "v2" }, { "created": "Thu, 28 Jan 2016 09:09:38 GMT", "version": "v3" } ]
2016-01-29
[ [ "Soumya", "C.", "" ], [ "Deepthi", "K. N.", "" ], [ "Mohanta", "R.", "" ] ]
With the recent measurement of reactor mixing angle $\theta_{13}$ the knowledge of neutrino oscillation parameters that describe PMNS matrix has improved significantly except the CP violating phase $\delta_{CP}$. The other unknown parameters in neutrino oscillation studies are mass hierarchy and the octant of the atmos...
1509.00305
Liang Tang
Liang Tang, Cong-Feng Qiao
Mass Spectra of $0^{+-}$, $1^{-+}$, and $2^{+-}$ Exotic Glueballs
10 pages, 12 figures, 4 tables, to appear in NPB. arXiv admin note: substantial text overlap with arXiv:1408.3995
null
10.1016/j.nuclphysb.2016.01.017
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
With appropriate interpolating currents the mass spectra of $0^{+-}$, $1^{-+}$, and $2^{+-}$ oddballs are studied in the framework of QCD sum rules (QCDSR). We find there exits one stable $0^{+-}$ oddball with mass of $4.57 \pm 0.13 \, \text{GeV}$, and one stable $2^{+-}$ oddball with mass of $6.06 \pm 0.13 \, \text{...
[ { "created": "Tue, 1 Sep 2015 14:13:57 GMT", "version": "v1" }, { "created": "Wed, 25 Nov 2015 01:43:04 GMT", "version": "v2" }, { "created": "Mon, 18 Jan 2016 12:52:51 GMT", "version": "v3" } ]
2016-02-17
[ [ "Tang", "Liang", "" ], [ "Qiao", "Cong-Feng", "" ] ]
With appropriate interpolating currents the mass spectra of $0^{+-}$, $1^{-+}$, and $2^{+-}$ oddballs are studied in the framework of QCD sum rules (QCDSR). We find there exits one stable $0^{+-}$ oddball with mass of $4.57 \pm 0.13 \, \text{GeV}$, and one stable $2^{+-}$ oddball with mass of $6.06 \pm 0.13 \, \text{Ge...
hep-ph/0007175
Helmut Satz
S. Digal, E. Laermann and H. Satz (U. of Bielefeld)
Deconfinement through Chiral Symmetry Restoration in Two-Flavour QCD
7 pages, 6 figures
Eur.Phys.J.C18:583-586,2001
10.1007/s100520000538
BI-TP 2000/25
hep-ph hep-lat
null
We propose that in QCD with dynamical quarks, colour deconfinement occurs when an external field induced by the chiral condensate strongly aligns the Polyakov loop. This effect sets in at the chiral symmetry restoration temperature T-chi and thus makes deconfinement and chiral symmetry restoration coincide. The predi...
[ { "created": "Mon, 17 Jul 2000 14:13:20 GMT", "version": "v1" } ]
2009-01-07
[ [ "Digal", "S.", "", "U. of Bielefeld" ], [ "Laermann", "E.", "", "U. of Bielefeld" ], [ "Satz", "H.", "", "U. of Bielefeld" ] ]
We propose that in QCD with dynamical quarks, colour deconfinement occurs when an external field induced by the chiral condensate strongly aligns the Polyakov loop. This effect sets in at the chiral symmetry restoration temperature T-chi and thus makes deconfinement and chiral symmetry restoration coincide. The predict...
1905.01069
Alessio Mangoni
Rinaldo Baldini Ferroli, Alessio Mangoni, Simone Pacetti, Kai Zhu
Strong and electromagnetic amplitudes of the $J/\psi$ decays into baryons and their relative phase
8 pages, 1 figure
null
10.1016/j.physletb.2019.135041
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The Feynman amplitude for the decay of the $J/\psi$ meson into baryon-antibaryon can be written as a sum of three sub-amplitudes: a purely strong, a purely electromagnetic and a mixed strong-electromagnetic. Assuming that the strong and mixed strong-electromagnetic sub-amplitudes have the same phase, the branching ra...
[ { "created": "Fri, 3 May 2019 08:25:45 GMT", "version": "v1" } ]
2019-10-30
[ [ "Ferroli", "Rinaldo Baldini", "" ], [ "Mangoni", "Alessio", "" ], [ "Pacetti", "Simone", "" ], [ "Zhu", "Kai", "" ] ]
The Feynman amplitude for the decay of the $J/\psi$ meson into baryon-antibaryon can be written as a sum of three sub-amplitudes: a purely strong, a purely electromagnetic and a mixed strong-electromagnetic. Assuming that the strong and mixed strong-electromagnetic sub-amplitudes have the same phase, the branching rati...
hep-ph/0509124
Amjad Gilani
Riazuddin
Neutrino flavor mixing in an SU(3) symmetry for light neutrinos
05 pages
null
null
null
hep-ph
null
It is proposed that light neutrinos form a triplet in a global SU(3) flavor symmetry. Within this framework, a symmetry principle predicts sin^2 theta_{23}=0.5 and gives the so called inverted neutrino mass hierarchy, theta _{13}=0 and a small deviation from pi/4 for theta_{12}.
[ { "created": "Tue, 13 Sep 2005 05:57:04 GMT", "version": "v1" } ]
2007-05-23
[ [ "Riazuddin", "", "" ] ]
It is proposed that light neutrinos form a triplet in a global SU(3) flavor symmetry. Within this framework, a symmetry principle predicts sin^2 theta_{23}=0.5 and gives the so called inverted neutrino mass hierarchy, theta _{13}=0 and a small deviation from pi/4 for theta_{12}.
1909.05735
Joel Oredsson
Joel Oredsson and Johan Rathsman
2-loop RG evolution of CP-violating 2HDM
31 pages
null
null
LU TP 19-43
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We use the recently developed code 2HDME to perform a 2-loop renormalization group analyzis of the CP violating Two-Higgs-doublet model (2HDM). Using parameter scans of several scenarios of Z2 symmetry breaking, we investigate the properties of 2HDMs under renormalization group evolution. Collider data constraints ar...
[ { "created": "Thu, 12 Sep 2019 14:59:43 GMT", "version": "v1" } ]
2019-09-13
[ [ "Oredsson", "Joel", "" ], [ "Rathsman", "Johan", "" ] ]
We use the recently developed code 2HDME to perform a 2-loop renormalization group analyzis of the CP violating Two-Higgs-doublet model (2HDM). Using parameter scans of several scenarios of Z2 symmetry breaking, we investigate the properties of 2HDMs under renormalization group evolution. Collider data constraints are ...
2408.03004
Wonsub Cho
Wonsub Cho, Ki-Young Choi, Satyabrata Mahapatra
Reconciling Cosmological Tensions with Inelastic Dark Matter and Dark Radiation in a $\boldsymbol{U(1)_D}$ Framework
27 pages, 7 captioned figures
null
null
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We propose a novel and comprehensive particle physics framework that addresses multiple cosmological tensions observed in recent measurements of the Hubble parameter, $S_8$, and Lyman-$\alpha$ forest data. Our model, termed `{\bf SIDR+$\boldsymbol{z_t}$}' (Self Interacting Dark Radiation with transition redshift), is...
[ { "created": "Tue, 6 Aug 2024 07:30:07 GMT", "version": "v1" } ]
2024-08-07
[ [ "Cho", "Wonsub", "" ], [ "Choi", "Ki-Young", "" ], [ "Mahapatra", "Satyabrata", "" ] ]
We propose a novel and comprehensive particle physics framework that addresses multiple cosmological tensions observed in recent measurements of the Hubble parameter, $S_8$, and Lyman-$\alpha$ forest data. Our model, termed `{\bf SIDR+$\boldsymbol{z_t}$}' (Self Interacting Dark Radiation with transition redshift), is b...
hep-ph/0305293
Arwed Schiller
C. Carimalo, A. Schiller, V.G. Serbo
A new method for calculating jet-like QED processes
6 pages, 2 figures, Contribution presented by V.G. Serbo at PHOTON 2003, Frascati, Italy
null
10.1016/S0920-5632(03)02358-2
LU-ITP 2003/012, LPNHE 2003-06
hep-ph
null
We consider inelastic QED processes, the cross sections of which do not drop with increasing energy. Such reactions have the form of two-jet processes with the exchange of a virtual photon in the t-channel. We consider them in the region of small scattering angles m/E <= theta << 1, which yield the dominant contribut...
[ { "created": "Mon, 26 May 2003 16:45:36 GMT", "version": "v1" } ]
2009-11-10
[ [ "Carimalo", "C.", "" ], [ "Schiller", "A.", "" ], [ "Serbo", "V. G.", "" ] ]
We consider inelastic QED processes, the cross sections of which do not drop with increasing energy. Such reactions have the form of two-jet processes with the exchange of a virtual photon in the t-channel. We consider them in the region of small scattering angles m/E <= theta << 1, which yield the dominant contributio...
0806.2298
Pasquini Barbara
B. Pasquini, S. Cazzaniga, S. Boffi (Pavia U. & INFN, Pavia)
Transverse momentum dependent parton distributions in a light-cone quark model
references added and typos corrected; version to appear in Phys. Rev. D
Phys.Rev.D78:034025,2008
10.1103/PhysRevD.78.034025
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The leading twist transverse momentum dependent parton distributions (TMDs) are studied in a light-cone description of the nucleon where the Fock expansion is truncated to consider only valence quarks. General analytic expressions are derived in terms of the six amplitudes needed to describe the three-quark sector of...
[ { "created": "Fri, 13 Jun 2008 08:59:14 GMT", "version": "v1" }, { "created": "Mon, 14 Jul 2008 10:47:55 GMT", "version": "v2" } ]
2010-05-28
[ [ "Pasquini", "B.", "", "Pavia U. & INFN, Pavia" ], [ "Cazzaniga", "S.", "", "Pavia U. & INFN, Pavia" ], [ "Boffi", "S.", "", "Pavia U. & INFN, Pavia" ] ]
The leading twist transverse momentum dependent parton distributions (TMDs) are studied in a light-cone description of the nucleon where the Fock expansion is truncated to consider only valence quarks. General analytic expressions are derived in terms of the six amplitudes needed to describe the three-quark sector of t...
2004.05362
Kun Xu
Kun Xu, Shuzhe Shi, Hui Zhang, Defu Hou, Jinfeng Liao, Mei Huang
Extracting the magnitude of magnetic field at freeze-out in heavy-ion collisions
13 pages, 11 figures
null
10.1016/j.physletb.2020.135706
null
hep-ph nucl-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A strong magnetic field influences significantly the masses of the charged light mesons. For example, the mass of charged pion increases with the magnetic field increasing. We propose this mechanism as a possible way to extract the magnitude of magnetic field at freeze-out in heavy ion collisions and thus help constr...
[ { "created": "Sat, 11 Apr 2020 10:45:36 GMT", "version": "v1" } ]
2020-08-26
[ [ "Xu", "Kun", "" ], [ "Shi", "Shuzhe", "" ], [ "Zhang", "Hui", "" ], [ "Hou", "Defu", "" ], [ "Liao", "Jinfeng", "" ], [ "Huang", "Mei", "" ] ]
A strong magnetic field influences significantly the masses of the charged light mesons. For example, the mass of charged pion increases with the magnetic field increasing. We propose this mechanism as a possible way to extract the magnitude of magnetic field at freeze-out in heavy ion collisions and thus help constrai...
hep-ph/9401214
John Gracey
J.A. Gracey
Anomalous Dimension of Non-Singlet Wilson Operators at O(1/N_f) in Deep Inelastic Scattering
13 Latex pages, 1 figure (available from author on request), LTH-322
Phys.Lett. B322 (1994) 141-146
10.1016/0370-2693(94)90502-9
null
hep-ph
null
We use the large N_f self consistency formalism to compute the $O(1/N_f)$ critical exponent corresponding to the renormalization of the flavour non-singlet twist two Wilson operators which arise in the operator product expansion of currents in deep inelastic processes. Expanding the $d$-dimensional expression in powe...
[ { "created": "Thu, 6 Jan 1994 14:27:00 GMT", "version": "v1" } ]
2009-10-28
[ [ "Gracey", "J. A.", "" ] ]
We use the large N_f self consistency formalism to compute the $O(1/N_f)$ critical exponent corresponding to the renormalization of the flavour non-singlet twist two Wilson operators which arise in the operator product expansion of currents in deep inelastic processes. Expanding the $d$-dimensional expression in powers...
hep-ph/0108008
James P. Zibin
J. P. Zibin
Dynamical Chaos and the Growth of Cosmological Fluctuations
4 pages, 2 figures, submitted to Phys. Rev. Lett
null
null
null
hep-ph astro-ph nlin.CD
null
I demonstrate that instability in a system of homogeneous scalar fields leads to the growth of super-Hubble metric perturbations. This generalizes the result that parametric resonance can lead to the growth of cosmological perturbations. Since dynamical chaos is common in multi-field quartically coupled systems, I ar...
[ { "created": "Wed, 1 Aug 2001 21:41:46 GMT", "version": "v1" } ]
2007-05-23
[ [ "Zibin", "J. P.", "" ] ]
I demonstrate that instability in a system of homogeneous scalar fields leads to the growth of super-Hubble metric perturbations. This generalizes the result that parametric resonance can lead to the growth of cosmological perturbations. Since dynamical chaos is common in multi-field quartically coupled systems, I argu...
1512.04048
Lian-rong Dai
L. R. Dai, Ju-Jun Xie and E. Oset
$B^0 \to D^0 \bar D^0 K^0$, $B^+ \to D^0 \bar D^0 K^+$ and the scalar $D \bar D$ bound state
9 pages, 17 figures
null
10.1140/epjc/s10052-016-3946-7
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the $B^0$ decay to $D^0 \bar D^0 K^0$ based on the chiral unitary model that generates the X(3720) resonance, and make predictions for the $D^0 \bar D^0$ invariant mass distribution. From the shape of the distribution, the existence of the resonance below threshold could be induced. We also predict the rate ...
[ { "created": "Sun, 13 Dec 2015 12:52:58 GMT", "version": "v1" } ]
2016-03-23
[ [ "Dai", "L. R.", "" ], [ "Xie", "Ju-Jun", "" ], [ "Oset", "E.", "" ] ]
We study the $B^0$ decay to $D^0 \bar D^0 K^0$ based on the chiral unitary model that generates the X(3720) resonance, and make predictions for the $D^0 \bar D^0$ invariant mass distribution. From the shape of the distribution, the existence of the resonance below threshold could be induced. We also predict the rate of...
1110.4343
Hao Ma
N\'estor Armesto, Hao Ma, Yacine Mehtar-Tani, Carlos A. Salgado, and Konrad Tywoniuk
Coherence effects and broadening in medium-induced QCD radiation off a massive $q {\bar q}$ antenna
24 pages, 10 figures
JHEP 1201 (2012) 109
10.1007/JHEP01(2012)109
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Studies of medium-induced QCD radiation usually rely on the calculation of single-gluon radiation spectrum off an energetic parton traversing an extended colored medium. Recently, the importance of interference effects between emitters in the medium has been explored. In this work we extend previous studies by calcul...
[ { "created": "Wed, 19 Oct 2011 18:07:10 GMT", "version": "v1" } ]
2015-05-30
[ [ "Armesto", "Néstor", "" ], [ "Ma", "Hao", "" ], [ "Mehtar-Tani", "Yacine", "" ], [ "Salgado", "Carlos A.", "" ], [ "Tywoniuk", "Konrad", "" ] ]
Studies of medium-induced QCD radiation usually rely on the calculation of single-gluon radiation spectrum off an energetic parton traversing an extended colored medium. Recently, the importance of interference effects between emitters in the medium has been explored. In this work we extend previous studies by calculat...
2202.02775
Trisha Sarkar
Ashutosh Kumar Alok, Trisha Sarkar, Shweta Yadav
Effects of non-standard interaction on microscopic black holes from ultra-high energy neutrinos
8 pages, 4 figures
European Physical Journal C, 82, Article no. 711 (2022)
10.1140/epjc/s10052-022-10674-6
null
hep-ph astro-ph.HE hep-th
http://creativecommons.org/licenses/by/4.0/
If the universe has more than 4-dimensions, the TeV scale gravity theories predict formation of microscopic black holes due to interaction of ultra high energy neutrinos coming from some extragalactic origin with the nucleons present in the Earth's atmosphere. The decay of these black holes can generate high multipli...
[ { "created": "Sun, 6 Feb 2022 13:49:50 GMT", "version": "v1" }, { "created": "Fri, 19 Aug 2022 14:45:00 GMT", "version": "v2" } ]
2022-08-22
[ [ "Alok", "Ashutosh Kumar", "" ], [ "Sarkar", "Trisha", "" ], [ "Yadav", "Shweta", "" ] ]
If the universe has more than 4-dimensions, the TeV scale gravity theories predict formation of microscopic black holes due to interaction of ultra high energy neutrinos coming from some extragalactic origin with the nucleons present in the Earth's atmosphere. The decay of these black holes can generate high multiplici...
hep-ph/9707352
Herbert Weigel
L. Gamberg, H. Reinhardt, and H. Weigel
Nucleon Structure Functions from a Chiral Soliton in the Infinite Momentum Frame
16 pages, 1 figure, revised version to be published in Int. J. Mod. Phys. A
Int.J.Mod.Phys. A13 (1998) 5519-5534
10.1142/S0217751X98002511
OKHEP-97-02, UNITU-THEP-15/1997
hep-ph
null
We study the frame dependence of nucleon structure functions obtained within a chiral soliton model for the nucleon. Employing light cone coordinates and introducing collective coordinates together with their conjugate momenta, translational invariance of the solitonic quark fields (which describe the nucleon as a lo...
[ { "created": "Tue, 15 Jul 1997 16:16:34 GMT", "version": "v1" }, { "created": "Fri, 17 Apr 1998 17:46:41 GMT", "version": "v2" } ]
2009-10-30
[ [ "Gamberg", "L.", "" ], [ "Reinhardt", "H.", "" ], [ "Weigel", "H.", "" ] ]
We study the frame dependence of nucleon structure functions obtained within a chiral soliton model for the nucleon. Employing light cone coordinates and introducing collective coordinates together with their conjugate momenta, translational invariance of the solitonic quark fields (which describe the nucleon as a loca...
2403.19343
Muyang Chen
Bao-Yi Yang, Hui-Hua Zhong, Muyang Chen
Running Coupling and Running Quark Mass Effects on the Elastic Form Factors of Nucleons
13 pages, 8 figures
null
null
null
hep-ph hep-th
http://creativecommons.org/licenses/by/4.0/
We study the elastic electric and magnetic form factors of the proton, neutron and the charged roper resonance ($G_E^p$, $G_M^p$, $G_E^n$, $G_M^n$, $G_E^R$ and $G_M^R$) systematically in a constituent quark model. Three ingredients are crucial in this study: i) the mixing between the pure S-wave and other components ...
[ { "created": "Thu, 28 Mar 2024 11:59:58 GMT", "version": "v1" }, { "created": "Fri, 19 Apr 2024 14:19:46 GMT", "version": "v2" } ]
2024-04-22
[ [ "Yang", "Bao-Yi", "" ], [ "Zhong", "Hui-Hua", "" ], [ "Chen", "Muyang", "" ] ]
We study the elastic electric and magnetic form factors of the proton, neutron and the charged roper resonance ($G_E^p$, $G_M^p$, $G_E^n$, $G_M^n$, $G_E^R$ and $G_M^R$) systematically in a constituent quark model. Three ingredients are crucial in this study: i) the mixing between the pure S-wave and other components wh...
1202.0294
Grigory Ovanesyan
Grigory Ovanesyan
Electroweak radiative corrections and unitarity of Standard Model
9 pages, 5 figures, information on v2: some minor typos fixed, published version
null
10.1016/j.physletb.2012.04.027
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Electroweak corrections to longitudinal gauge and Higgs boson scattering amplitudes are calculated. Due to Sudakov double logarithms, the effect is a suppression of amplitude that grows rapidly with increasing center of mass energy leading to significant reduction of cross sections compared to tree level results. For...
[ { "created": "Wed, 1 Feb 2012 21:12:58 GMT", "version": "v1" }, { "created": "Tue, 15 May 2012 16:46:09 GMT", "version": "v2" } ]
2015-06-04
[ [ "Ovanesyan", "Grigory", "" ] ]
Electroweak corrections to longitudinal gauge and Higgs boson scattering amplitudes are calculated. Due to Sudakov double logarithms, the effect is a suppression of amplitude that grows rapidly with increasing center of mass energy leading to significant reduction of cross sections compared to tree level results. For e...
hep-ph/9604365
Uma Mahanta
Uma Mahanta
Resolution of the $\rb -\als$ crisis of the SM in an exotic ETC scenario
TeX, 8 pages, no figures
null
null
MRI-PHY/15/96
hep-ph
null
In this article we show that the $\rb -\als $ crisis of the SM can be resolved in a commuting TC scenario with sideways gauge bosons only if the ETC representation contains mirror technifermions. For a toy ETC model we estimate the value of $\xi^2_t={\gel/ \guer}$ that is needed to produce the observed LEP excess in ...
[ { "created": "Fri, 19 Apr 1996 23:44:12 GMT", "version": "v1" } ]
2007-05-23
[ [ "Mahanta", "Uma", "" ] ]
In this article we show that the $\rb -\als $ crisis of the SM can be resolved in a commuting TC scenario with sideways gauge bosons only if the ETC representation contains mirror technifermions. For a toy ETC model we estimate the value of $\xi^2_t={\gel/ \guer}$ that is needed to produce the observed LEP excess in $\...
1508.03648
Chee Sheng Fong
Chee Sheng Fong
Baryogenesis from Symmetry Principle
15 pages, 1 figure, 3 tables. Slight modifications to match the published version
Phys. Lett. B 752, 247 (2016)
10.1016/j.physletb.2015.11.055
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this work, a formalism based on symmetry which allows one to express asymmetries of all the particles in terms of conserved charges is developed. The manifestation of symmetry allows one to easily determine the viability of a baryogenesis scenario and also to identity the different roles played by the symmetry. Th...
[ { "created": "Fri, 14 Aug 2015 20:33:12 GMT", "version": "v1" }, { "created": "Mon, 7 Dec 2015 20:31:53 GMT", "version": "v2" } ]
2015-12-08
[ [ "Fong", "Chee Sheng", "" ] ]
In this work, a formalism based on symmetry which allows one to express asymmetries of all the particles in terms of conserved charges is developed. The manifestation of symmetry allows one to easily determine the viability of a baryogenesis scenario and also to identity the different roles played by the symmetry. This...
hep-ph/0007225
Eizou Umezawa
Eizou Umezawa
Compositeness Condition and Vacuum Stability
26 pages, Latex file, 4 eps figures, a few mistake is corrected, several equations are simplified
null
null
NUP-A-2000-14
hep-ph
null
We consider what occurs when we remove one of the compositeness conditions proposed by Bardeen, Hill and Lindner that leads to predictions for the top quark mass conflicting with the experimental value. Through this consideration the condition for the Higgs particle to be the composite particle is reconsidered. We sh...
[ { "created": "Thu, 20 Jul 2000 13:27:53 GMT", "version": "v1" }, { "created": "Fri, 21 Jul 2000 20:45:13 GMT", "version": "v2" }, { "created": "Mon, 18 Sep 2000 08:26:27 GMT", "version": "v3" } ]
2007-05-23
[ [ "Umezawa", "Eizou", "" ] ]
We consider what occurs when we remove one of the compositeness conditions proposed by Bardeen, Hill and Lindner that leads to predictions for the top quark mass conflicting with the experimental value. Through this consideration the condition for the Higgs particle to be the composite particle is reconsidered. We show...
2205.11531
Kevin Hinze
Stefan Antusch, Kevin Hinze, Shaikh Saad
Implications of the Zero 1-3 Flavour Mixing Hypothesis: Predictions for $\theta_{23}^\mathrm{PMNS}$ and $\delta^\mathrm{PMNS}$
10 pages + references, 4 figures
null
10.1007/JHEP08(2022)045
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
We revisit mixing sum rule relations in the lepton and quark sectors under the assumption that the 1-3 elements of the flavour mixing matrices ($V^u_L,V^d_L,V^e_L,V^\nu_L$) are zero in the flavour basis. We consider the exact relations resulting from the validity of this "zero 1-3 flavour mixing hypothesis" and analy...
[ { "created": "Mon, 23 May 2022 18:00:01 GMT", "version": "v1" } ]
2022-08-24
[ [ "Antusch", "Stefan", "" ], [ "Hinze", "Kevin", "" ], [ "Saad", "Shaikh", "" ] ]
We revisit mixing sum rule relations in the lepton and quark sectors under the assumption that the 1-3 elements of the flavour mixing matrices ($V^u_L,V^d_L,V^e_L,V^\nu_L$) are zero in the flavour basis. We consider the exact relations resulting from the validity of this "zero 1-3 flavour mixing hypothesis" and analyse...
hep-ph/9608257
null
Alexander Bochkarev
Dispersive theory of charmonium on the Lattice
uuencoded Postscript file of 14 pages. Contribution to the Proceedings of the worskshop "Continuous Advances in QCD '96", Minneapolis, March 28-31, 1996
null
null
null
hep-ph
null
Physical contribution of the high-energy part of hadronic spectrum is incorporated to describe the short-distance part of the correlator of heavy-quark currents obtained by quenched Monte-Carlo on a $8^3*16$- and $16^3*32$-lattices for $\beta= \{ 6, 6.3 \}$. The lattice artifacts in the short-distance behavior of tha...
[ { "created": "Wed, 7 Aug 1996 20:39:05 GMT", "version": "v1" } ]
2007-05-23
[ [ "Bochkarev", "Alexander", "" ] ]
Physical contribution of the high-energy part of hadronic spectrum is incorporated to describe the short-distance part of the correlator of heavy-quark currents obtained by quenched Monte-Carlo on a $8^3*16$- and $16^3*32$-lattices for $\beta= \{ 6, 6.3 \}$. The lattice artifacts in the short-distance behavior of that ...
1012.5309
Jernej Kamenik
Jernej F. Kamenik
Theory of b --> s/d nu anti-nu
Proceedings of CKM2010, the 6th International Workshop on the CKM Unitarity Triangle, University of Warwick, UK, 6-10 September 2010
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The b --> s nu anti-nu transitions are sensitive probes of new physics (NP) in the form of non-standard Z penguin effects. They involve four experimentally accessible observables, among which the inclusive rate of B --> Xs nu anti-nu is the most theoretically clean, but is challenging to study experimentally. Theory ...
[ { "created": "Thu, 23 Dec 2010 21:38:55 GMT", "version": "v1" }, { "created": "Thu, 17 Mar 2011 21:47:48 GMT", "version": "v2" } ]
2011-03-21
[ [ "Kamenik", "Jernej F.", "" ] ]
The b --> s nu anti-nu transitions are sensitive probes of new physics (NP) in the form of non-standard Z penguin effects. They involve four experimentally accessible observables, among which the inclusive rate of B --> Xs nu anti-nu is the most theoretically clean, but is challenging to study experimentally. Theory er...
hep-ph/9701402
Stephane Keller
D. Denisov and S. Keller
Summary of the Very Large Hadron Collider Physics and Detector Subgroup
To appear in the Proceedings of the 1996 DPF/DPB Summer Study on New Directions for High-Energy Physics, Snowmass 96
ECONFC960625:ACC040,1996
null
FERMILAB-CONF-97/018-T
hep-ph
null
We summarize the activity of the Very Large Hadron Collider Physics and Detector subgroup during Snowmass 96.
[ { "created": "Tue, 28 Jan 1997 21:40:57 GMT", "version": "v1" } ]
2008-11-26
[ [ "Denisov", "D.", "" ], [ "Keller", "S.", "" ] ]
We summarize the activity of the Very Large Hadron Collider Physics and Detector subgroup during Snowmass 96.
0810.3592
Ignasi Rosell
Ignasi Rosell
Current correlators and form factors in the resonance region
Talk given at the 14th International Quantum Chromodynamics Conference, 7-12th July (2008), Montpellier (France)
null
10.1016/j.nuclphysbps.2008.12.034
IFIC/08-54
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Within Resonance Chiral Theory and in the context of QCD current correlators at next-to-leading order in 1/N(C), we have analyzed the two-body form factors which include resonances as a final state . The short-distance constraints have been studied. One of the main motivations is the estimation of the chiral low-ener...
[ { "created": "Mon, 20 Oct 2008 15:53:29 GMT", "version": "v1" } ]
2009-11-13
[ [ "Rosell", "Ignasi", "" ] ]
Within Resonance Chiral Theory and in the context of QCD current correlators at next-to-leading order in 1/N(C), we have analyzed the two-body form factors which include resonances as a final state . The short-distance constraints have been studied. One of the main motivations is the estimation of the chiral low-energy...
hep-ph/9308235
null
Howard E. Haber
Phenomenology of Gluino Searches at the Tevatron
17 pages, PHYZZX format (with Ray Cowan's TABLES.TEX macros), invited talk presented at the SUSY-93 Workshop, Northeastern University, Boston, MA, 29 March--1 April 1993
null
null
null
hep-ph
null
Present data indicates that the gluino (if it exists) must be heavier than about 95~GeV. During the next few years as the Tevatron integrated luminosity increases, gluino searches will be able to probe the mass range between 100 and 200~GeV. For masses in this range, a variety of gluino decay modes can provide viable...
[ { "created": "Fri, 6 Aug 1993 05:46:00 GMT", "version": "v1" } ]
2007-05-23
[ [ "Haber", "Howard E.", "" ] ]
Present data indicates that the gluino (if it exists) must be heavier than about 95~GeV. During the next few years as the Tevatron integrated luminosity increases, gluino searches will be able to probe the mass range between 100 and 200~GeV. For masses in this range, a variety of gluino decay modes can provide viable s...
hep-ph/0410168
David Bugg
D.V.Bugg (Queen Mary, University of London, UK)
The X(3872) and the 3941 MeV peak in omega+J/Psi
18 pages, 3 figures Sign errors corrected in eqns. (4) and (16). Notation clarified in Secn. (4.5). Comments added onthe course partial wave analysis might take
Phys.Rev.D71:016006,2005
10.1103/PhysRevD.71.016006
null
hep-ph
null
Belle data for the pi-pi mass spectrum in X(3872) -> pi-pi + JPsi are well fitted by rho + J/Psi with JPC = 1++, but are poorly fitted by the pi-pi S-wave. Formulae for partial wave amplitudes are given for all likely JPC and decay modes of the 3941 MeV peak in omega + J/Psi. Angular correlations involving up to five...
[ { "created": "Tue, 12 Oct 2004 15:05:07 GMT", "version": "v1" }, { "created": "Tue, 19 Oct 2004 12:25:34 GMT", "version": "v2" }, { "created": "Thu, 21 Oct 2004 07:32:52 GMT", "version": "v3" }, { "created": "Mon, 17 Jan 2005 10:39:47 GMT", "version": "v4" }, { "c...
2008-11-26
[ [ "Bugg", "D. V.", "", "Queen Mary, University of London, UK" ] ]
Belle data for the pi-pi mass spectrum in X(3872) -> pi-pi + JPsi are well fitted by rho + J/Psi with JPC = 1++, but are poorly fitted by the pi-pi S-wave. Formulae for partial wave amplitudes are given for all likely JPC and decay modes of the 3941 MeV peak in omega + J/Psi. Angular correlations involving up to five a...
2405.18480
Gray Putnam
Joshua Berger and Gray Putnam
Sensitivity to Kaon Decays to ALPs at Fixed Target Experiments
null
null
null
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the sensitivity of fixed target experiments to hadronically-coupled axion like particles (ALPs) produced in kaon decays, with a particular emphasis on current and upcoming short-baseline neutrino experiments. We demonstrate that below the kaon decay mass threshold ($m_a < m_K - m_\pi$) kaon decay is the domi...
[ { "created": "Tue, 28 May 2024 18:00:05 GMT", "version": "v1" } ]
2024-05-30
[ [ "Berger", "Joshua", "" ], [ "Putnam", "Gray", "" ] ]
We study the sensitivity of fixed target experiments to hadronically-coupled axion like particles (ALPs) produced in kaon decays, with a particular emphasis on current and upcoming short-baseline neutrino experiments. We demonstrate that below the kaon decay mass threshold ($m_a < m_K - m_\pi$) kaon decay is the domina...
2110.03718
Guo-Yuan Huang
Guo-yuan Huang and Werner Rodejohann
Tritium beta decay with modified neutrino dispersion relations: KATRIN in the dark sea
24 pages, 4 figures, matching the published version in NPB
null
10.1016/j.nuclphysb.2023.116262
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
We explore beta decays in a dark background field, which could be formed by dark matter, dark energy or a fifth force potential. In such scenarios, the neutrino's dispersion relation will be modified by its collective interaction with the dark field, which can have interesting consequences in experiments using tritiu...
[ { "created": "Thu, 7 Oct 2021 18:14:34 GMT", "version": "v1" }, { "created": "Mon, 24 Jul 2023 05:55:36 GMT", "version": "v2" } ]
2023-07-25
[ [ "Huang", "Guo-yuan", "" ], [ "Rodejohann", "Werner", "" ] ]
We explore beta decays in a dark background field, which could be formed by dark matter, dark energy or a fifth force potential. In such scenarios, the neutrino's dispersion relation will be modified by its collective interaction with the dark field, which can have interesting consequences in experiments using tritium ...
hep-ph/0703271
Masaharu Iwasaki
Masaharu Iwasaki, Hiromasa Ohnishi, and Takahiko Fukutome
Shear viscosity of the quark matter
5 pages, 6 figures
null
10.1088/0954-3899/35/3/035003
null
hep-ph
null
We discuss shear viscosity of the quark matter by using Kubo formula. The shear viscosity is calculated in the framework of the quasi-particle RPA for the Nambu-Jona-Lasinio model. We obtain a formula that the shear viscosity is expressed by the quadratic form of the quark spectral function in the chiral symmetric ph...
[ { "created": "Mon, 26 Mar 2007 03:14:55 GMT", "version": "v1" }, { "created": "Mon, 14 May 2007 09:20:48 GMT", "version": "v2" } ]
2009-11-13
[ [ "Iwasaki", "Masaharu", "" ], [ "Ohnishi", "Hiromasa", "" ], [ "Fukutome", "Takahiko", "" ] ]
We discuss shear viscosity of the quark matter by using Kubo formula. The shear viscosity is calculated in the framework of the quasi-particle RPA for the Nambu-Jona-Lasinio model. We obtain a formula that the shear viscosity is expressed by the quadratic form of the quark spectral function in the chiral symmetric phas...
hep-ph/9704213
Lee Jae Sik
Ji-Ho Jang, Yeong Gyun Kim and Jae Sik Lee
R-parity Violation and Semileptonic Decays of B-meson
10 pages, LaTex file, no figure. References and a table are added. Tables are improved
Phys.Lett.B408:367-372,1997
10.1016/S0370-2693(97)00803-4
KAIST-TH 97/04
hep-ph
null
We investigate the effects of R-parity violation on the semileptonic decays of B-meson in the minimal supersymmetric standard model with explicit R-parity violation and discuss its physical implications. We find that the semileptonic decays of B-meson can be largely affected by the R-parity violation.
[ { "created": "Wed, 2 Apr 1997 11:28:24 GMT", "version": "v1" }, { "created": "Wed, 21 May 1997 12:40:17 GMT", "version": "v2" } ]
2010-11-23
[ [ "Jang", "Ji-Ho", "" ], [ "Kim", "Yeong Gyun", "" ], [ "Lee", "Jae Sik", "" ] ]
We investigate the effects of R-parity violation on the semileptonic decays of B-meson in the minimal supersymmetric standard model with explicit R-parity violation and discuss its physical implications. We find that the semileptonic decays of B-meson can be largely affected by the R-parity violation.
1709.02817
C\'edric Delaunay
C\'edric Delaunay, Claudia Frugiuele, Elina Fuchs, Yotam Soreq
Probing new spin-independent interactions through precision spectroscopy in atoms with few electrons
16 pages, 7 figures
Phys. Rev. D 96, 115002 (2017)
10.1103/PhysRevD.96.115002
null
hep-ph physics.atom-ph quant-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The very high precision of current measurements and theory predictions of spectral lines in few-electron atoms allows to efficiently probe the existence of exotic forces between electrons, neutrons and protons. We investigate the sensitivity to new spin-independent interactions in transition frequencies (and their is...
[ { "created": "Fri, 8 Sep 2017 18:00:10 GMT", "version": "v1" } ]
2017-12-13
[ [ "Delaunay", "Cédric", "" ], [ "Frugiuele", "Claudia", "" ], [ "Fuchs", "Elina", "" ], [ "Soreq", "Yotam", "" ] ]
The very high precision of current measurements and theory predictions of spectral lines in few-electron atoms allows to efficiently probe the existence of exotic forces between electrons, neutrons and protons. We investigate the sensitivity to new spin-independent interactions in transition frequencies (and their isot...
1810.13445
Tadashi Ishikawa
Tadashi Ishikawa (1), Nobuya Nakazawa (2) and Yoshiaki Yasui (3) ((1) High Energy Accelerator Organization (KEK), (2) Kogakuin University, (3) Tokyo Management College)
Numerical calculation of the full two-loop electroweak corrections to muon (g-2)
12 pages, 6 figures. arXiv admin note: substantial text overlap with arXiv:1709.03284
Phys. Rev. D 99, 073004 (2019)
10.1103/PhysRevD.99.073004
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Numerical calculation of two-loop electroweak corrections to the muon anomalous magnetic moment ($g$-2) is done based on, on shell renormalization scheme (OS) and free quark model (FQM). The GRACE-FORM system is used to generate Feynman diagrams and corresponding amplitudes. Total 1780 two-loop diagrams and 70 one-lo...
[ { "created": "Tue, 30 Oct 2018 02:50:22 GMT", "version": "v1" }, { "created": "Sat, 16 Feb 2019 05:03:22 GMT", "version": "v2" }, { "created": "Sun, 24 Mar 2019 12:35:28 GMT", "version": "v3" } ]
2019-04-17
[ [ "Ishikawa", "Tadashi", "" ], [ "Nakazawa", "Nobuya", "" ], [ "Yasui", "Yoshiaki", "" ] ]
Numerical calculation of two-loop electroweak corrections to the muon anomalous magnetic moment ($g$-2) is done based on, on shell renormalization scheme (OS) and free quark model (FQM). The GRACE-FORM system is used to generate Feynman diagrams and corresponding amplitudes. Total 1780 two-loop diagrams and 70 one-loop...
1212.2043
Yu-Feng Zhou
Yu-Feng Zhou
Direct and indirect constraints on isospin-violating dark matter
7 pages, 3 figures, invited talk at the "9th International Symposium on Cosmology and Particle Physics (CosPA2012)", 13-17 November 2012, Taipei
null
10.1016/j.nuclphysbps.2013.10.072
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The scenario of isospin-violating dark matter (IVDM) with destructive interference between DM-proton and DM-neutron scatterings provides a potential possibility to reconcile the experimental results of DAMA, CoGeNT and XENON. We explore the constraints on the IVDM from other direct detection experiments such as CRESS...
[ { "created": "Mon, 10 Dec 2012 12:04:29 GMT", "version": "v1" } ]
2016-02-24
[ [ "Zhou", "Yu-Feng", "" ] ]
The scenario of isospin-violating dark matter (IVDM) with destructive interference between DM-proton and DM-neutron scatterings provides a potential possibility to reconcile the experimental results of DAMA, CoGeNT and XENON. We explore the constraints on the IVDM from other direct detection experiments such as CRESST ...
hep-ph/0505128
Agustin Sabio Vera
Agustin Sabio Vera (Hamburg U., Inst. Theor. Phys. II)
An "all-poles" approximation to collinear resummations in the Regge limit of perturbative QCD
16 pages, 9 figures
Nucl.Phys.B722:65-80,2005
10.1016/j.nuclphysb.2005.06.003
null
hep-ph
null
The procedure to improve the convergence in transverse momentum space of the NLL BFKL kernel using a w-shift is revisited. An accurate approximation to this shift only depending on transverse momenta is presented. This approximation is based on a Bessel function of the first kind with argument depending on the strong...
[ { "created": "Sat, 14 May 2005 18:13:01 GMT", "version": "v1" } ]
2008-11-26
[ [ "Vera", "Agustin Sabio", "", "Hamburg U., Inst. Theor. Phys. II" ] ]
The procedure to improve the convergence in transverse momentum space of the NLL BFKL kernel using a w-shift is revisited. An accurate approximation to this shift only depending on transverse momenta is presented. This approximation is based on a Bessel function of the first kind with argument depending on the strong c...
hep-ph/0011124
Nikolai Uraltsev
Nikolai Uraltsev
New Exact Heavy Quark Sum Rules
7 pages, LaTeX
Phys.Lett. B501 (2001) 86-91
10.1016/S0370-2693(01)00110-1
UND-HEP-00-BIG09
hep-ph
null
Considering nonforward scattering amplitude off the heavy quark in the Small Velocity limit two exact superconvergent sum rules are derived. The first sum rule leads to the lower bound \rho^2 > 3/4 for the slope of the Isgur-Wise function. It also provides the rationale for the fact that the vector heavy flavor meson...
[ { "created": "Thu, 9 Nov 2000 20:04:27 GMT", "version": "v1" } ]
2009-10-31
[ [ "Uraltsev", "Nikolai", "" ] ]
Considering nonforward scattering amplitude off the heavy quark in the Small Velocity limit two exact superconvergent sum rules are derived. The first sum rule leads to the lower bound \rho^2 > 3/4 for the slope of the Isgur-Wise function. It also provides the rationale for the fact that the vector heavy flavor mesons ...
hep-ph/9401291
James Botts
Johannes Bl\"umlein and James Botts
Do Deep Inelastic Scattering Data Favor a Light Gluino
8 pages with 7 pages of figures, DESY 94-008
Phys.Lett.B325:190-196,1994; ERRATUM-ibid.B331:450,1994
10.1016/0370-2693(94)90091-4
null
hep-ph
null
A next--to--leading order QCD analysis of deep inelastic scattering data is performed allowing for contributions due to a light gluino. We obtain the values of $\alpha_s(M_Z^2) \pm \delta \alpha_s^{stat} = 0.108 \pm 0.002, 0.124 \pm 0.001, 0.145 \pm 0.009$ for QCD, SUSY QCD with a Majorana gluino and a Dirac gluino r...
[ { "created": "Thu, 20 Jan 1994 11:44:10 GMT", "version": "v1" } ]
2011-07-19
[ [ "Blümlein", "Johannes", "" ], [ "Botts", "James", "" ] ]
A next--to--leading order QCD analysis of deep inelastic scattering data is performed allowing for contributions due to a light gluino. We obtain the values of $\alpha_s(M_Z^2) \pm \delta \alpha_s^{stat} = 0.108 \pm 0.002, 0.124 \pm 0.001, 0.145 \pm 0.009$ for QCD, SUSY QCD with a Majorana gluino and a Dirac gluino res...
hep-ph/0103090
Valery Telnov
E. Boos (1), A. De Roeck (2), I. F. Ginzburg (3), K. Hagiwara (4), R. D. Heuer (5), G. Jikia (6), J. Kwiecinski (7), D. J. Miller (8), T. Takahashi (9), V. Telnov (10 and 11), T. Rizzo (12), I. Watanabe (13), P. M. Zerwas (11) ((1) Moscow U., (2) CERN, (3) IM Novosibirsk, (4) KEK, (5) U. Hamburg, (6) U. Freibur...
Gold-plated processes at photon colliders
36 pages, Latex, 11 figures(ps,eps), Talk at Intern. Workshop on High Energy Photon Colliders; June 14-17, 2000, DESY, Hamburg, Germany; to be published in Nucl. Instr. and Methods A
Nucl.Instrum.Meth.A472:100-120,2001
10.1016/S0168-9002(01)01168-8
null
hep-ph
null
We review the most important topics and objectives of the physics program of the gamma-gamma, gamma-electron collider (photon collider) option for an e+e- linear collider.
[ { "created": "Fri, 9 Mar 2001 08:46:52 GMT", "version": "v1" } ]
2008-11-26
[ [ "Boos", "E.", "", "10 and 11" ], [ "De Roeck", "A.", "", "10 and 11" ], [ "Ginzburg", "I. F.", "", "10 and 11" ], [ "Hagiwara", "K.", "", "10 and 11" ], [ "Heuer", "R. D.", "", "10 and 11" ], [ "Jikia", "G....
We review the most important topics and objectives of the physics program of the gamma-gamma, gamma-electron collider (photon collider) option for an e+e- linear collider.
hep-ph/0212082
Panayotis Katsas
Apostolos D. Panagiotou and Panayiotis G. Katsas
The strange-quark chemical potential as an experimentally accessible "order parameter" of the deconfinement phase transition for finite baryon-density
22 pages, 14 figures within text, 2 figures(6,B3) as separate files. To be published in J.Phys.G: Nucl.&Part.Phys. G28 (2002)
J.Phys.G29:243-262,2003
10.1088/0954-3899/29/2/302
null
hep-ph
null
We consider the change of the strange-quark chemical potential in the phase diagram of nuclear matter, employing the Wilson loop and scalar quark condensate order parameters, mass-scaled partition functions and enforcing flavor conservation. Assuming the region beyond the hadronic phase to be described by massive, co...
[ { "created": "Thu, 5 Dec 2002 13:05:01 GMT", "version": "v1" } ]
2008-11-26
[ [ "Panagiotou", "Apostolos D.", "" ], [ "Katsas", "Panayiotis G.", "" ] ]
We consider the change of the strange-quark chemical potential in the phase diagram of nuclear matter, employing the Wilson loop and scalar quark condensate order parameters, mass-scaled partition functions and enforcing flavor conservation. Assuming the region beyond the hadronic phase to be described by massive, corr...
1506.01694
Nikolas Kauer
Nikolas Kauer, Claire O'Brien, Eleni Vryonidou
Interference effects for H --> WW --> lvqq and H --> ZZ --> llqq searches in gluon fusion at the LHC
25 pages, 23 figures, 8 tables; added 13 TeV results, minor clarifications, conclusions unchanged, version to appear in JHEP
null
null
MCnet-15-11, CP3-15-16
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Signal-background interference effects are studied for H --> WW and H --> ZZ searches in gluon fusion at the LHC. More specifically, the interference in the channels with semileptonic weak boson pair decay is analysed for light and heavy Higgs masses with minimal and realistic experimental selection cuts. In the semi...
[ { "created": "Thu, 4 Jun 2015 19:32:13 GMT", "version": "v1" }, { "created": "Wed, 23 Sep 2015 16:18:16 GMT", "version": "v2" } ]
2015-09-24
[ [ "Kauer", "Nikolas", "" ], [ "O'Brien", "Claire", "" ], [ "Vryonidou", "Eleni", "" ] ]
Signal-background interference effects are studied for H --> WW and H --> ZZ searches in gluon fusion at the LHC. More specifically, the interference in the channels with semileptonic weak boson pair decay is analysed for light and heavy Higgs masses with minimal and realistic experimental selection cuts. In the semile...
hep-ph/0609148
Roberto Contino
Roberto Contino
A holographic composite Higgs model
4 pages, talk given at IFAE 2006, Pavia, Italy, April 19-21 2006
null
null
null
hep-ph
null
If the Higgs boson has a composite nature, it might be the 4-dimensional hologram of a gauge field living in a warped extra dimension. In this talk I discuss a minimal, calculable model that passes all electroweak precision tests, included that from Z->bb, and gives a natural account of the electroweak symmetry break...
[ { "created": "Fri, 15 Sep 2006 13:12:52 GMT", "version": "v1" } ]
2007-05-23
[ [ "Contino", "Roberto", "" ] ]
If the Higgs boson has a composite nature, it might be the 4-dimensional hologram of a gauge field living in a warped extra dimension. In this talk I discuss a minimal, calculable model that passes all electroweak precision tests, included that from Z->bb, and gives a natural account of the electroweak symmetry breakin...
0805.1255
Fernando Navarra
E.R. Cazaroto, F. Carvalho, V.P. Gon\c{c}alves, F.S. Navarra
Could saturation effects be visible in a future electron-ion collider?
7 pages 5 figures
Phys.Lett.B671:233-239,2009
10.1016/j.physletb.2008.12.036
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We expect to observe parton saturation in a future electron - ion collider. In this letter we discuss this expectation in more detail considering two different models which are in good agreement with the existing experimental data on nuclear structure functions. In particular, we study the predictions of saturation e...
[ { "created": "Thu, 8 May 2008 23:59:26 GMT", "version": "v1" } ]
2009-01-14
[ [ "Cazaroto", "E. R.", "" ], [ "Carvalho", "F.", "" ], [ "Gonçalves", "V. P.", "" ], [ "Navarra", "F. S.", "" ] ]
We expect to observe parton saturation in a future electron - ion collider. In this letter we discuss this expectation in more detail considering two different models which are in good agreement with the existing experimental data on nuclear structure functions. In particular, we study the predictions of saturation eff...
hep-ph/0310062
Muneyuki Ishida
Muneyuki Ishida and Shin Ishida
Scalar Mesons and Chiral States
5 pages, proc of Hadron 2003
null
10.1063/1.1799787
null
hep-ph
null
The essential points and physical backgrounds of the covariant level-classification scheme, based on U(12)SF * O(3,1)L, are reviewed: This scheme is extended from the non-relativistic SU(6)SF * O(3)L scheme by introducing the new SU(2)-spin (rho-spin) degree of freedom, which is necessary for covariant description of...
[ { "created": "Mon, 6 Oct 2003 06:32:06 GMT", "version": "v1" } ]
2009-11-10
[ [ "Ishida", "Muneyuki", "" ], [ "Ishida", "Shin", "" ] ]
The essential points and physical backgrounds of the covariant level-classification scheme, based on U(12)SF * O(3,1)L, are reviewed: This scheme is extended from the non-relativistic SU(6)SF * O(3)L scheme by introducing the new SU(2)-spin (rho-spin) degree of freedom, which is necessary for covariant description of c...
2405.13981
Muhammad Ibrahim Abdulhamid Elsayed
M. I. Abdulhamid, A. M. Hamed, E. A. Osama, M. Rateb, N. K. Sadoun and F. H. Sawy
Benchmarking the Non-flow Contributions to the Elliptic Flow Parameter ($v_{_2}$) in Proton-Proton Collisions
11 pages, 5 figures
null
null
null
hep-ph hep-ex nucl-ex
http://creativecommons.org/licenses/by/4.0/
This manuscript reports on the elliptic flow parameter, $v_{_2}$, in proton-proton (p-p) collisions using PYTHIA8 event generator simulations. The typical Event Plane (EP) method $v_{_2}$(EP) besides the algorithm used for the real data analysis has been adopted to measure the $v_{_2}$ of particles composed of differ...
[ { "created": "Wed, 22 May 2024 20:34:17 GMT", "version": "v1" } ]
2024-05-24
[ [ "Abdulhamid", "M. I.", "" ], [ "Hamed", "A. M.", "" ], [ "Osama", "E. A.", "" ], [ "Rateb", "M.", "" ], [ "Sadoun", "N. K.", "" ], [ "Sawy", "F. H.", "" ] ]
This manuscript reports on the elliptic flow parameter, $v_{_2}$, in proton-proton (p-p) collisions using PYTHIA8 event generator simulations. The typical Event Plane (EP) method $v_{_2}$(EP) besides the algorithm used for the real data analysis has been adopted to measure the $v_{_2}$ of particles composed of differen...
hep-ph/9708414
Dr Bindu A. bhamba
Bindu A. Bambah (University of Hyderabad, India)
Generalized States for Multipion Production and Disoriented Chiral Condensates
Latex, 5 pages, 5 figures. Manuscript file paper.tex. Mathematica figures inserted using texmma. Included along with tex files, figure files and the preamble and style files: texmma22.pro and mmatext.sty. To be published in the Proceedings of the International Conference on the Physics and Astrophysis of the Qu...
null
null
null
hep-ph
null
We show that the sudden quenching mechanism responsible for the production of the disoriented chiral condensate gives rise automatically to squeezed states. We compare the distribution of charged and neutral pions in the two extreme limits of a sudden quench and a slow adiabatic relaxation and show that in the former...
[ { "created": "Wed, 20 Aug 1997 16:52:21 GMT", "version": "v1" } ]
2007-05-23
[ [ "Bambah", "Bindu A.", "", "University of Hyderabad, India" ] ]
We show that the sudden quenching mechanism responsible for the production of the disoriented chiral condensate gives rise automatically to squeezed states. We compare the distribution of charged and neutral pions in the two extreme limits of a sudden quench and a slow adiabatic relaxation and show that in the former c...
2203.15616
Wei Chen
Pengfei Yang and Wei Chen
QCD sum rule study for hidden-strange pentaquarks
13 pages, 4 figures. To be published in Chinese Physics C
null
10.1088/1674-1137/ac9889
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
Inspired by the LHCb's observations of hidden-charm $P_{c(s)}$ states, we study their hidden-strange analogues $P_s$ states in both $[udu][\bar ss]$ and $[uds][\bar su]$ configurations. We investigate the $P_s$ pentaquark states in $p\eta^\prime$, $p\phi$, $\Lambda K$, $\Sigma K$ and $\Sigma^\ast K^\ast$ structures w...
[ { "created": "Tue, 29 Mar 2022 14:37:41 GMT", "version": "v1" }, { "created": "Wed, 12 Oct 2022 09:00:22 GMT", "version": "v2" } ]
2022-12-08
[ [ "Yang", "Pengfei", "" ], [ "Chen", "Wei", "" ] ]
Inspired by the LHCb's observations of hidden-charm $P_{c(s)}$ states, we study their hidden-strange analogues $P_s$ states in both $[udu][\bar ss]$ and $[uds][\bar su]$ configurations. We investigate the $P_s$ pentaquark states in $p\eta^\prime$, $p\phi$, $\Lambda K$, $\Sigma K$ and $\Sigma^\ast K^\ast$ structures wit...
0710.5311
Vassilis Spanos
Vassilis C. Spanos
Gravitino Dark Matter and Light Element Adundances
Submitted for the SUSY07 proceedings, 4 pages, LaTeX, 3 eps figures
null
null
null
hep-ph
null
We discuss the scenario where the gravitino is the lightest supersymmetric particle and the long-lived next-to-lightest sparticle (NSP) is the neutralino or the stau, the charged partner of the tau lepton. In this case staus form bound states with several nuclei, affecting the cosmological abundances of Li6 and Li7 b...
[ { "created": "Sun, 28 Oct 2007 21:22:36 GMT", "version": "v1" } ]
2007-10-30
[ [ "Spanos", "Vassilis C.", "" ] ]
We discuss the scenario where the gravitino is the lightest supersymmetric particle and the long-lived next-to-lightest sparticle (NSP) is the neutralino or the stau, the charged partner of the tau lepton. In this case staus form bound states with several nuclei, affecting the cosmological abundances of Li6 and Li7 by ...
1906.00888
Michael Strickland
Michael Strickland
Using bottomonium production as a tomographic probe of the quark-gluon plasma
12 pages, 6 figures; Proceedings contribution for the 13th International Workshop in High pT Physics in the RHIC and LHC Era, 19-22 March 2019, Knoxville, Tennessee, USA
null
null
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The suppression of bottomonia in ultrarelativistic heavy-ion collisions is a smoking gun for the production of a strongly interacting final state in ultrarelativistic heavy-ion collisions. Furthermore, these final state interactions are consistent with the production of a hot hydrodynamically expanding quark-gluon pl...
[ { "created": "Mon, 3 Jun 2019 15:48:10 GMT", "version": "v1" } ]
2019-06-04
[ [ "Strickland", "Michael", "" ] ]
The suppression of bottomonia in ultrarelativistic heavy-ion collisions is a smoking gun for the production of a strongly interacting final state in ultrarelativistic heavy-ion collisions. Furthermore, these final state interactions are consistent with the production of a hot hydrodynamically expanding quark-gluon plas...
hep-ph/9602219
Naoyuki Haba
Naoyuki Haba (Nagoya Univ.)
Higgs Masses and $CP$ Violation in SUSY Models
25 pages, Latex, 6 figures
null
null
DPNU-96-05
hep-ph
null
Though the mass of Higgs particle is the parameter determined by the experiment in the standard model (SM), SUSY models have rather predictive power for the lightest Higgs mass, and its upper bound in some SUSY models are close to the observable region in LEP2. The upper bound of the lightest Higgs mass is analysed s...
[ { "created": "Sat, 3 Feb 1996 01:55:06 GMT", "version": "v1" } ]
2007-05-23
[ [ "Haba", "Naoyuki", "", "Nagoya Univ." ] ]
Though the mass of Higgs particle is the parameter determined by the experiment in the standard model (SM), SUSY models have rather predictive power for the lightest Higgs mass, and its upper bound in some SUSY models are close to the observable region in LEP2. The upper bound of the lightest Higgs mass is analysed sys...
hep-ph/9708297
Stephen Wong
S.M.H. Wong
Non-Abelian Equilibration in Heavy Ion Collisions
6 pages, Talk presented at the 32nd Rencontres de Moriond, March 97, Les Arcs, France
Proc. 32nd Moriond, QCD and Hadronic interactions, p. 485
null
WU B 97/16
hep-ph
null
The uncertainty in the equilibration in heavy ion collisions due to the choice of the value of the coupling is examined. The results of the equilibration are indeed affected by this choice. In particular, a variation of $\a_s$ from 0.3 to 0.5 reduces the parton phase of the plasma by as much as 4.0 fm/c and increasin...
[ { "created": "Sat, 9 Aug 1997 16:17:15 GMT", "version": "v1" } ]
2007-05-23
[ [ "Wong", "S. M. H.", "" ] ]
The uncertainty in the equilibration in heavy ion collisions due to the choice of the value of the coupling is examined. The results of the equilibration are indeed affected by this choice. In particular, a variation of $\a_s$ from 0.3 to 0.5 reduces the parton phase of the plasma by as much as 4.0 fm/c and increasing ...
2007.15563
Vedran Brdar
Vedran Brdar, Admir Greljo, Joachim Kopp, Toby Opferkuch
The Neutrino Magnetic Moment Portal: Cosmology, Astrophysics, and Direct Detection
18 pages, 4 figures, matches version published in JCAP; in v3 updated terrestrial constraints/sensitivities (Fig. 2); our calculations unchanged
JCAP01 (2021) 039
10.1088/1475-7516/2021/01/039
CERN-TH-2020-130, MITP/20-041
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We revisit the physics of neutrino magnetic moments, focusing in particular on the case where the right-handed, or sterile, neutrinos are heavier (up to several MeV) than the left-handed Standard Model neutrinos. The discussion is centered around the idea of detecting an upscattering event mediated by a transition ma...
[ { "created": "Thu, 30 Jul 2020 16:12:21 GMT", "version": "v1" }, { "created": "Thu, 21 Jan 2021 23:13:50 GMT", "version": "v2" }, { "created": "Thu, 6 May 2021 19:56:03 GMT", "version": "v3" } ]
2021-05-10
[ [ "Brdar", "Vedran", "" ], [ "Greljo", "Admir", "" ], [ "Kopp", "Joachim", "" ], [ "Opferkuch", "Toby", "" ] ]
We revisit the physics of neutrino magnetic moments, focusing in particular on the case where the right-handed, or sterile, neutrinos are heavier (up to several MeV) than the left-handed Standard Model neutrinos. The discussion is centered around the idea of detecting an upscattering event mediated by a transition magn...
1309.4450
Andreas von Manteuffel
R. Bonciani, A. Ferroglia, T. Gehrmann, A. von Manteuffel, C. Studerus
Light-quark two-loop corrections to heavy-quark pair production in the gluon fusion channel
25 pages, 3 figures, ancillary files with results
null
10.1007/JHEP12(2013)038
BI-TP 2013/21, MITP/13-051, ROMA1-1473/13, ZU-TH 20/13
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We calculate the two-loop corrections to heavy-quark pair production in the gluon fusion channel which arise from diagrams involving a closed light-quark loop. The calculation is carried out by keeping the exact dependence on the heavy-quark mass. The analytic results are written in terms of logarithms, classical pol...
[ { "created": "Tue, 17 Sep 2013 20:00:01 GMT", "version": "v1" } ]
2015-06-17
[ [ "Bonciani", "R.", "" ], [ "Ferroglia", "A.", "" ], [ "Gehrmann", "T.", "" ], [ "von Manteuffel", "A.", "" ], [ "Studerus", "C.", "" ] ]
We calculate the two-loop corrections to heavy-quark pair production in the gluon fusion channel which arise from diagrams involving a closed light-quark loop. The calculation is carried out by keeping the exact dependence on the heavy-quark mass. The analytic results are written in terms of logarithms, classical polyl...
hep-ph/0009233
M. Ploszajczak
Robert Botet and Marek Ploszajczak
Universal features of fluctuations
10 pages; TORINO 2000, New Frontiers in Soft Physics and Correlations on the Threshold of the Third Millenium
Nucl.Phys.Proc.Suppl. 92 (2001) 101
10.1016/S0920-5632(00)01024-0
null
hep-ph
null
Universal scaling laws of fluctuations (the $\Delta$-scaling laws) can be derived for equilibrium and off-equilibrium systems when combined with the finite-size scaling analysis. In any system in which the second-order critical behavior can be identified, the relation between order parameter, criticality and scaling ...
[ { "created": "Wed, 20 Sep 2000 16:12:52 GMT", "version": "v1" } ]
2009-10-31
[ [ "Botet", "Robert", "" ], [ "Ploszajczak", "Marek", "" ] ]
Universal scaling laws of fluctuations (the $\Delta$-scaling laws) can be derived for equilibrium and off-equilibrium systems when combined with the finite-size scaling analysis. In any system in which the second-order critical behavior can be identified, the relation between order parameter, criticality and scaling la...
0910.1009
Ian Woo Lee
Ian Woo Lee, Amand Faessler, Thomas Gutsche, Valery E. Lyubovitskij
X(3872) as a molecular DD* state in a potential model
14 pages, 7 figures
Phys.Rev.D80:094005,2009
10.1103/PhysRevD.80.094005
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We discuss the possibility that the X(3872) can be a hadronic DD* bound state in the framework of a potential model. The potential is generated by the exchange of pseudoscalar, scalar and vector mesons resulting from the Lagrangian of heavy hadron chiral perturbation theory. The hadronic bound state configuration con...
[ { "created": "Tue, 6 Oct 2009 14:10:01 GMT", "version": "v1" }, { "created": "Mon, 9 Nov 2009 16:29:49 GMT", "version": "v2" } ]
2010-01-15
[ [ "Lee", "Ian Woo", "" ], [ "Faessler", "Amand", "" ], [ "Gutsche", "Thomas", "" ], [ "Lyubovitskij", "Valery E.", "" ] ]
We discuss the possibility that the X(3872) can be a hadronic DD* bound state in the framework of a potential model. The potential is generated by the exchange of pseudoscalar, scalar and vector mesons resulting from the Lagrangian of heavy hadron chiral perturbation theory. The hadronic bound state configuration conta...
hep-ph/9603234
Momchil Velkovsky
M.Velkovsky and E.Shuryak
A Mean Field Approach To The Instanton-Induced Effect Close To The QCD Phase Transition
26 pages, LaTeX, 6 postscript files of 6 figures in addition
Phys.Rev.D56:2766-2777,1997
10.1103/PhysRevD.56.2766
SUNY-NTG-95-2
hep-ph
null
In the instanton models the chiral phase transition is driven by a transition from random instanton-antiinstanton liquid and correlated instanton-antiinstanton molecules. So far this phenomenon was studied by numerical simulations, while we develop alternative semi-analytic approach. For two massless quark flavors, b...
[ { "created": "Wed, 6 Mar 1996 03:40:00 GMT", "version": "v1" } ]
2014-11-17
[ [ "Velkovsky", "M.", "" ], [ "Shuryak", "E.", "" ] ]
In the instanton models the chiral phase transition is driven by a transition from random instanton-antiinstanton liquid and correlated instanton-antiinstanton molecules. So far this phenomenon was studied by numerical simulations, while we develop alternative semi-analytic approach. For two massless quark flavors, bot...
1401.1110
Purnendu Chakraborty
Purnendu Chakraborty and Subhashis Chattopadhyay
$J/\psi$ in a hot baryonic plasma
null
null
null
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We calculate the bound state properties of $J/\psi$ in a hot and dense QCD plasma using phenomenological potentials augmented by inputs from perturbative QCD. The temperature and density region of study will be relevant in future heavy ion collision experiments at FAIR. We find that the effect of baryon density on th...
[ { "created": "Mon, 6 Jan 2014 15:14:04 GMT", "version": "v1" } ]
2014-01-07
[ [ "Chakraborty", "Purnendu", "" ], [ "Chattopadhyay", "Subhashis", "" ] ]
We calculate the bound state properties of $J/\psi$ in a hot and dense QCD plasma using phenomenological potentials augmented by inputs from perturbative QCD. The temperature and density region of study will be relevant in future heavy ion collision experiments at FAIR. We find that the effect of baryon density on the ...
1510.04787
Rong Wang
Wei Zhu, Rong Wang, and Jianhong Ruan
Looking for quark saturation in proton and nuclei
14 pages, 13 figures
International Journal of Modern Physics E, Vol. 26 (2017) 1750009
10.1142/S0218301317500094
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The quark saturation behavior at low $Q^2$ is shown in a numeric solution of the DGLAP equation with parton recombination corrections, which resembles the widely discussed JIMWLK saturation of gluons. Our calculation suggests that the partonic saturation can be interpreted as a dynamical balance between the splitting...
[ { "created": "Fri, 16 Oct 2015 05:56:45 GMT", "version": "v1" }, { "created": "Sun, 5 Mar 2017 12:27:33 GMT", "version": "v2" } ]
2017-03-07
[ [ "Zhu", "Wei", "" ], [ "Wang", "Rong", "" ], [ "Ruan", "Jianhong", "" ] ]
The quark saturation behavior at low $Q^2$ is shown in a numeric solution of the DGLAP equation with parton recombination corrections, which resembles the widely discussed JIMWLK saturation of gluons. Our calculation suggests that the partonic saturation can be interpreted as a dynamical balance between the splitting a...
hep-ph/9809518
null
S.V. Molodtsov, A.M. Snigirev, G.M. Zinovjev
Phonon-Like Excitations of the Instanton Liquid
7 pages
Acta Phys.Slov. 49 (1999) 231-240
null
null
hep-ph hep-lat hep-th
null
The phonon-like excitations of (anti)-instanton liquid ($\bar II$) due to adiabatic variations of vacuum wave functions are studied in this paper. The kinetic energy term is found and proper effective Lagrangian for such excitations is evaluated.The properties of their spectrum, while the corresponding masses are def...
[ { "created": "Thu, 24 Sep 1998 15:33:07 GMT", "version": "v1" } ]
2007-05-23
[ [ "Molodtsov", "S. V.", "" ], [ "Snigirev", "A. M.", "" ], [ "Zinovjev", "G. M.", "" ] ]
The phonon-like excitations of (anti)-instanton liquid ($\bar II$) due to adiabatic variations of vacuum wave functions are studied in this paper. The kinetic energy term is found and proper effective Lagrangian for such excitations is evaluated.The properties of their spectrum, while the corresponding masses are defin...
1105.0241
Toshifumi Yamada
Nobuchika Okada (U. of Alabama), Toshifumi Yamada (The Graduate U. for Advanced Studies, KEK)
Gaugino Mediation Combined with the Bulk Matter Randall-Sundrum Model
null
Phys.Rev.D84:035005,2011
10.1103/PhysRevD.84.035005
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate a simple 5D extension of the Minimal Supersymmetric (SUSY) Standard Model (SM) that is combined with the bulk matter Randall-Sundrum (RS) model, which gives a natural explanation the Yukawa coupling hierarchy. In this model, matter and gauge superfields reside in the 5D bulk while a SUSY breaking secto...
[ { "created": "Mon, 2 May 2011 05:00:54 GMT", "version": "v1" }, { "created": "Tue, 3 May 2011 05:42:34 GMT", "version": "v2" }, { "created": "Wed, 4 May 2011 01:13:51 GMT", "version": "v3" }, { "created": "Tue, 5 Jul 2011 06:22:53 GMT", "version": "v4" }, { "creat...
2011-09-13
[ [ "Okada", "Nobuchika", "", "U. of Alabama" ], [ "Yamada", "Toshifumi", "", "The Graduate U. for\n Advanced Studies, KEK" ] ]
We investigate a simple 5D extension of the Minimal Supersymmetric (SUSY) Standard Model (SM) that is combined with the bulk matter Randall-Sundrum (RS) model, which gives a natural explanation the Yukawa coupling hierarchy. In this model, matter and gauge superfields reside in the 5D bulk while a SUSY breaking sector ...
hep-ph/0105259
John R. Hiller
S.J. Brodsky, J.R. Hiller, Chueng-Ryong Ji, G.A. Miller
Perturbative QCD and factorization of coherent pion photoproduction on the deuteron
RevTeX 3.1, 17 pages, 6 figures; v2: incorporates minor changes as version accepted by Phys Rev C
Phys.Rev.C64:055204,2001
10.1103/PhysRevC.64.055204
SLAC-PUB-8836, UMN-D-01-5, NCSU-TH-01-07, NT@UW-00-09
hep-ph nucl-th
null
We analyze the predictions of perturbative QCD for pion photoproduction on the deuteron, gamma D -> pi^0 D, at large momentum transfer using the reduced amplitude formalism. The cluster decomposition of the deuteron wave function at small binding only allows the nuclear coherent process to proceed if each nucleon abs...
[ { "created": "Thu, 24 May 2001 22:49:28 GMT", "version": "v1" }, { "created": "Tue, 25 Sep 2001 18:07:46 GMT", "version": "v2" } ]
2009-09-11
[ [ "Brodsky", "S. J.", "" ], [ "Hiller", "J. R.", "" ], [ "Ji", "Chueng-Ryong", "" ], [ "Miller", "G. A.", "" ] ]
We analyze the predictions of perturbative QCD for pion photoproduction on the deuteron, gamma D -> pi^0 D, at large momentum transfer using the reduced amplitude formalism. The cluster decomposition of the deuteron wave function at small binding only allows the nuclear coherent process to proceed if each nucleon absor...
hep-ph/0309310
Satoru Kaneko
Masako Bando, Satoru Kaneko, Midori Obara, Morimitu Tanimoto
Can Symmetric Texture reproduce Neutrino Bi-large Mixing?
11 pages, 4 figures
Phys.Lett. B580 (2004) 229-235
10.1016/j.physletb.2003.11.052
NIIG-DP 03-05, OCHA-PP-211
hep-ph
null
We study the symmetric texture of geometric form with 2-zeros to see if it is consistent with the presently-known neutrino masses and mixings. In the neutrino mass matrix elements we obtain numerically the allowed region of the parameters including CP violating phases, which can reproduce the present neutrino experim...
[ { "created": "Sat, 27 Sep 2003 06:29:45 GMT", "version": "v1" }, { "created": "Wed, 5 Nov 2003 09:08:38 GMT", "version": "v2" }, { "created": "Mon, 17 Nov 2003 05:21:12 GMT", "version": "v3" } ]
2015-06-25
[ [ "Bando", "Masako", "" ], [ "Kaneko", "Satoru", "" ], [ "Obara", "Midori", "" ], [ "Tanimoto", "Morimitu", "" ] ]
We study the symmetric texture of geometric form with 2-zeros to see if it is consistent with the presently-known neutrino masses and mixings. In the neutrino mass matrix elements we obtain numerically the allowed region of the parameters including CP violating phases, which can reproduce the present neutrino experimen...
1909.04158
I. V. Danilkin
Igor Danilkin, Oleksandra Deineka, Marc Vanderhaeghen
Dispersive analysis of the $\gamma^{*}\gamma^{*} \to \pi \pi$ process
8 pages, 3 figures
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this paper, we present a dispersive analysis of the double-virtual photon-photon scattering to two pions up to 1.5 GeV. Through unitarity, this process is very sensitive to hadronic final state interaction. For the $s$-wave, we use a coupled-channel $\pi\pi,\, K\bar{K}$ analysis which allows a simultaneous descrip...
[ { "created": "Mon, 9 Sep 2019 21:05:53 GMT", "version": "v1" }, { "created": "Wed, 18 Mar 2020 15:15:10 GMT", "version": "v2" } ]
2020-03-19
[ [ "Danilkin", "Igor", "" ], [ "Deineka", "Oleksandra", "" ], [ "Vanderhaeghen", "Marc", "" ] ]
In this paper, we present a dispersive analysis of the double-virtual photon-photon scattering to two pions up to 1.5 GeV. Through unitarity, this process is very sensitive to hadronic final state interaction. For the $s$-wave, we use a coupled-channel $\pi\pi,\, K\bar{K}$ analysis which allows a simultaneous descripti...
hep-ph/9507204
Hubert Spiesberger
I. Kuss and H. Spiesberger
Luminosities for Vector-Boson Vector-Boson Scattering at High Energy Colliders
Latex 2.09, 33 pages with figures, figures in separate uuencoded Postscript file
Phys.Rev.D53:6078-6093,1996
10.1103/PhysRevD.53.6078
University of Bielefeld, BI-TP 95/25
hep-ph
null
We derive exact expressions for luminosities of massive vector-boson pairs which can be used to describe the cross sections for processes in hadron collisions or $e^+e^-$ annihilation which proceed via two-vector-boson scattering. Our approach correctly takes into account the mutual influence of the emission of one v...
[ { "created": "Mon, 3 Jul 1995 12:46:15 GMT", "version": "v1" } ]
2011-07-19
[ [ "Kuss", "I.", "" ], [ "Spiesberger", "H.", "" ] ]
We derive exact expressions for luminosities of massive vector-boson pairs which can be used to describe the cross sections for processes in hadron collisions or $e^+e^-$ annihilation which proceed via two-vector-boson scattering. Our approach correctly takes into account the mutual influence of the emission of one vec...
1605.04342
Joao Pacheco B. C. de Melo Dr.
Clayton Santos Mello (Instituto Tecnol\'ogico de Aeron\'autica, DCTA, 12.228-900 S\~ao Jos\'e dos Campos, SP, Brazil), J. P. B. C. de Melo (Laborat\'orio de F\'isica Te\'orica e Computacional - LFTC, Universidade Cruzeiro do Sul, 01506-000, S\~ao Paulo, SP, Brazil), and T. Frederico (Instituto Tecnol\'ogico de ...
The pion electromagnetic structure with self-energy
8 pages, 2 figures, use axodra.sty, jpconf.cls, jpconf11.clo and multirow.sty
Journal of Physics: Conference Series 706 (2016) 052008
10.1088/1742-6596/706/5/052008
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the electromagnetic structure of the pion in terms of the quantum cromodynamic~(QCD) model on the Breit-frame. We calculated the observables, such as the electromagnetic form factor. The priori to have a calculation covariant need to get the valence term of the eletromagnetic form factor. We use the usual fo...
[ { "created": "Fri, 13 May 2016 22:05:18 GMT", "version": "v1" } ]
2016-05-17
[ [ "Mello", "Clayton Santos", "", "Instituto Tecnológico de Aeronáutica, DCTA,\n 12.228-900 São José dos Campos, SP, Brazil" ], [ "de Melo", "J. P. B. C.", "", "Laboratório de Física Teórica e Computacional - LFTC, Universidade\n Cruzeiro do Sul, 01506-000, São Paulo, SP, Brazil...
We study the electromagnetic structure of the pion in terms of the quantum cromodynamic~(QCD) model on the Breit-frame. We calculated the observables, such as the electromagnetic form factor. The priori to have a calculation covariant need to get the valence term of the eletromagnetic form factor. We use the usual form...
hep-ph/9702337
Martti Raidal
G. Barenboim, J. Bernabeu and M. Raidal
Spontaneous CP violation and the B system
19 pages, LATEX, 4 postscript figures included
Nucl.Phys. B511 (1998) 577-593
10.1016/S0550-3213(97)00668-8
FTUV/96-70
hep-ph
null
We investigate effects of spontaneous breakdown of CP in $B^0_{d,s}-\overline{B^0}_{d,s}$ systems in left-right symmetric models. Assuming that the left-right contribution to the $B^0-\overline{B^0}$ matrix element $M_{12}$ can be at most equal to the standard model one we obtain a new lower bound, $M_H\gsim 12$ TeV,...
[ { "created": "Fri, 14 Feb 1997 15:10:06 GMT", "version": "v1" } ]
2009-10-30
[ [ "Barenboim", "G.", "" ], [ "Bernabeu", "J.", "" ], [ "Raidal", "M.", "" ] ]
We investigate effects of spontaneous breakdown of CP in $B^0_{d,s}-\overline{B^0}_{d,s}$ systems in left-right symmetric models. Assuming that the left-right contribution to the $B^0-\overline{B^0}$ matrix element $M_{12}$ can be at most equal to the standard model one we obtain a new lower bound, $M_H\gsim 12$ TeV, o...
0807.4777
Inanc Sahin
I. Sahin
Anomalous quartic WWgammagamma and WWZgamma couplings through WWZ production in gamma gamma colliders
16 pages, 6 figures, 3 tables
J. Phys.G 36:075007,2009; J.Phys.G36:075007,2009
10.1088/0954-3899/36/7/075007
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We find 95% confidence level limits on the anomalous coupling parameters $a_0$, $a_c$ and $a_n$ with an integrated luminosity of $500fb^{-1}$ and $\sqrt s =0.5, 1$ and 1.5 TeV energies. We take into account incoming beam polarizations and also the final state polarizations of the gauge bosons in the cross-section cal...
[ { "created": "Wed, 30 Jul 2008 03:52:57 GMT", "version": "v1" } ]
2011-07-19
[ [ "Sahin", "I.", "" ] ]
We find 95% confidence level limits on the anomalous coupling parameters $a_0$, $a_c$ and $a_n$ with an integrated luminosity of $500fb^{-1}$ and $\sqrt s =0.5, 1$ and 1.5 TeV energies. We take into account incoming beam polarizations and also the final state polarizations of the gauge bosons in the cross-section calcu...
1702.02769
Olga I. Piskounova
O.I. Piskounova
Rapidity Gaps in Double Diffraction Events at LHC and Baryon-anti Baryon Torus
8 pages and 9 figures
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The positive baryon-antibaryon production asymmetries that have been measured at LHC are real demonstrations of string junction dynamics in the proton-proton interactions of high energies. The topological presentation of pomeron exchange in the proton-proton collision of high energy is cylinder diagram that is covere...
[ { "created": "Thu, 9 Feb 2017 09:51:03 GMT", "version": "v1" }, { "created": "Wed, 15 Feb 2017 08:33:41 GMT", "version": "v2" }, { "created": "Mon, 20 Feb 2017 08:28:17 GMT", "version": "v3" }, { "created": "Thu, 13 May 2021 08:32:24 GMT", "version": "v4" } ]
2021-05-14
[ [ "Piskounova", "O. I.", "" ] ]
The positive baryon-antibaryon production asymmetries that have been measured at LHC are real demonstrations of string junction dynamics in the proton-proton interactions of high energies. The topological presentation of pomeron exchange in the proton-proton collision of high energy is cylinder diagram that is covered ...
1306.3022
Bruno El-Bennich
E. Rojas, J.P.B.C. de Melo, B. El-Bennich, O. Oliveira and T. Frederico
On the Quark-Gluon Vertex and Quark-Ghost Kernel: combining Lattice Simulations with Dyson-Schwinger equations
29 pages, 14 figures, JHEP style
null
10.1007/JHEP10(2013)193
null
hep-ph hep-lat nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the dressed quark-gluon vertex combining two established non-perturbative approaches to QCD: the Dyson-Schwinger equation (DSE) for the quark propagator and lattice-regularized simulations for the quark, gluon and ghost propagators. The vertex is modeled using a generalized Ball-Chiu ansatz parameteriz...
[ { "created": "Thu, 13 Jun 2013 04:36:50 GMT", "version": "v1" }, { "created": "Fri, 14 Jun 2013 07:31:35 GMT", "version": "v2" } ]
2015-06-16
[ [ "Rojas", "E.", "" ], [ "de Melo", "J. P. B. C.", "" ], [ "El-Bennich", "B.", "" ], [ "Oliveira", "O.", "" ], [ "Frederico", "T.", "" ] ]
We investigate the dressed quark-gluon vertex combining two established non-perturbative approaches to QCD: the Dyson-Schwinger equation (DSE) for the quark propagator and lattice-regularized simulations for the quark, gluon and ghost propagators. The vertex is modeled using a generalized Ball-Chiu ansatz parameterized...
1303.3156
Wouter Dekens
W. Dekens and J. de Vries
Renormalization Group Running of Dimension-Six Sources of Parity and Time-Reversal Violation
Matches published version, 35 pages, 6 figures, minor corrections
JHEP 05 (2013) 149
10.1007/JHEP05(2013)149
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We perform a systematic study of flavor-diagonal parity- and time-reversal-violating operators of dimension six which could arise from physics beyond the SM. We begin at the unknown high-energy scale where these operators originate. At this scale the operators are constrained by gauge invariance which has important c...
[ { "created": "Wed, 13 Mar 2013 13:30:53 GMT", "version": "v1" }, { "created": "Mon, 3 Jun 2013 10:20:42 GMT", "version": "v2" } ]
2013-06-04
[ [ "Dekens", "W.", "" ], [ "de Vries", "J.", "" ] ]
We perform a systematic study of flavor-diagonal parity- and time-reversal-violating operators of dimension six which could arise from physics beyond the SM. We begin at the unknown high-energy scale where these operators originate. At this scale the operators are constrained by gauge invariance which has important con...
1105.1779
Xavier Calmet
Xavier Calmet, Dionysios Fragkakis and Nina Gausmann
The flavor of quantum gravity
8 pages
null
10.1140/epjc/s10052-011-1781-4
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We develop an effective field theory to describe the coupling of non-thermal quantum black holes to particles such as those of the Standard Model. The effective Lagrangian is determined by imposing that the production cross section of a non-thermal quantum black hole be given by the usual geometrical cross section. H...
[ { "created": "Mon, 9 May 2011 20:00:11 GMT", "version": "v1" } ]
2015-05-28
[ [ "Calmet", "Xavier", "" ], [ "Fragkakis", "Dionysios", "" ], [ "Gausmann", "Nina", "" ] ]
We develop an effective field theory to describe the coupling of non-thermal quantum black holes to particles such as those of the Standard Model. The effective Lagrangian is determined by imposing that the production cross section of a non-thermal quantum black hole be given by the usual geometrical cross section. Hav...
hep-ph/9601277
Michael Tung
M.M. Tung, J. Bernabeu, and J. Penarrocha (Dept. de Fisica Teorica, Universidad de Valencia, Spain)
Analytic O(alpha_s) Results for Bottom and Top Quark Production in e+ e- Collisions
35 pages, LaTeX, 7 figures, final version to appear in Nucl. Phys. B (includes minor text changes)
Nucl.Phys. B470 (1996) 41-70
10.1016/0550-3213(96)00162-9
FTUV/95-38, IFIC/95-40
hep-ph
null
We present a new derivation of the O(alpha_s) angular distribution of the outgoing $q$-quark in the production process $e^+ e^- \to\gamma,Z\to q\,\bar{q}(g)$. In our calculation, we express the three-particle phase-space integration of the gluon-bremsstrahlung process in terms of a general set of analytic integral so...
[ { "created": "Tue, 16 Jan 1996 16:26:59 GMT", "version": "v1" }, { "created": "Mon, 29 Jan 1996 19:01:48 GMT", "version": "v2" }, { "created": "Tue, 30 Jan 1996 21:02:38 GMT", "version": "v3" }, { "created": "Tue, 2 Jul 1996 15:13:06 GMT", "version": "v4" } ]
2009-10-28
[ [ "Tung", "M. M.", "", "Dept. de Fisica Teorica,\n Universidad de Valencia, Spain" ], [ "Bernabeu", "J.", "", "Dept. de Fisica Teorica,\n Universidad de Valencia, Spain" ], [ "Penarrocha", "J.", "", "Dept. de Fisica Teorica,\n Universidad de Valencia, Spain...
We present a new derivation of the O(alpha_s) angular distribution of the outgoing $q$-quark in the production process $e^+ e^- \to\gamma,Z\to q\,\bar{q}(g)$. In our calculation, we express the three-particle phase-space integration of the gluon-bremsstrahlung process in terms of a general set of analytic integral solu...
hep-ph/0312010
Jong-Phil Lee
Jong-Phil Lee
Photon polarization in $B\to K_{\rm res}\gamma$
10 pages, Contribution to the Proceedings of the 2nd International Conferenceon Flavor Physics (ICFP 2003), KIAS, Seoul, Korea, 6-11 Oct. 2003
J.Korean Phys.Soc.45:S347-S350,2004
null
null
hep-ph
null
In this talk, I introduce recently proposed method for measuring the photon polarization in $B\to K_{\rm res}\gamma$. It is also shown that anomalous right-handed top couplings can severely affect the photon polarization without spoiling the well measured branching ratio of $B\to X_s\gamma$. Estimated number of $B$ m...
[ { "created": "Sun, 30 Nov 2003 11:13:12 GMT", "version": "v1" } ]
2014-11-17
[ [ "Lee", "Jong-Phil", "" ] ]
In this talk, I introduce recently proposed method for measuring the photon polarization in $B\to K_{\rm res}\gamma$. It is also shown that anomalous right-handed top couplings can severely affect the photon polarization without spoiling the well measured branching ratio of $B\to X_s\gamma$. Estimated number of $B$ mes...
hep-ph/0207286
Nathan F. Lepora
Nathan F. Lepora
Some problems when calculating the quantum corrections to the classical 't Hooft-Polyakov monopole
5 pages, LaTeX
Phys.Lett. B536 (2002) 338-343
10.1016/S0370-2693(02)01871-3
null
hep-ph hep-th
null
We examine whether the analysis of quantum corrections for the kink soliton carries over to the 't Hooft-Polyakov monopole. For the kink, it is central that the quantum fluctuations are eigenmodes of a Hermitian operator. For the monopole, we show the analogous operator is not Hermitian. This property raises some que...
[ { "created": "Tue, 23 Jul 2002 17:22:21 GMT", "version": "v1" } ]
2009-11-07
[ [ "Lepora", "Nathan F.", "" ] ]
We examine whether the analysis of quantum corrections for the kink soliton carries over to the 't Hooft-Polyakov monopole. For the kink, it is central that the quantum fluctuations are eigenmodes of a Hermitian operator. For the monopole, we show the analogous operator is not Hermitian. This property raises some quest...
hep-ph/0210234
Shan-Gui Zhou
T. Frederico, Hans-Christian Pauli, and Shan-Gui Zhou
Universal description of S-wave meson spectra in a renormalized light-cone QCD-inspired model
RevTeX, 17 pages, 7 eps figures, to be published in Phys. Rev. D
Phys.Rev. D66 (2002) 116011
10.1103/PhysRevD.66.116011
null
hep-ph
null
A light-cone QCD-inspired model, with the mass squared operator consisting of a harmonic oscillator potential as confinement and a Dirac-delta interaction, is used to study the S-wave meson spectra. The two parameters of the harmonic potential and quark masses are fixed by masses of rho(770), rho(1450), J/psi, psi(2S...
[ { "created": "Wed, 16 Oct 2002 16:41:28 GMT", "version": "v1" } ]
2009-11-07
[ [ "Frederico", "T.", "" ], [ "Pauli", "Hans-Christian", "" ], [ "Zhou", "Shan-Gui", "" ] ]
A light-cone QCD-inspired model, with the mass squared operator consisting of a harmonic oscillator potential as confinement and a Dirac-delta interaction, is used to study the S-wave meson spectra. The two parameters of the harmonic potential and quark masses are fixed by masses of rho(770), rho(1450), J/psi, psi(2S),...
hep-ph/0503204
Tamas Biro S.
T.S.Biro and G.Purcsel
Non-extensive Boltzmann Equation and Hadronization
5 pages 2 figures LaTeX, v2: more references
Phys.Rev.Lett. 95 (2005) 162302
10.1103/PhysRevLett.95.162302
null
hep-ph cond-mat.stat-mech
null
For a general, associative addition rule defining a non-extensive thermodynamics we construct the strict monotonic function, which transforms it to an additive quantity. We investigate the evolution of one-particle distributions in the framework of a two-body Boltzmann equation supported with a non-extensive energy a...
[ { "created": "Mon, 21 Mar 2005 15:04:51 GMT", "version": "v1" }, { "created": "Fri, 1 Apr 2005 07:16:57 GMT", "version": "v2" } ]
2009-11-11
[ [ "Biro", "T. S.", "" ], [ "Purcsel", "G.", "" ] ]
For a general, associative addition rule defining a non-extensive thermodynamics we construct the strict monotonic function, which transforms it to an additive quantity. We investigate the evolution of one-particle distributions in the framework of a two-body Boltzmann equation supported with a non-extensive energy add...
1402.2719
Hongshi Zong
Hong-tao Feng, Feng-yao Hou, Yong-hui Xia, Jun-yi Wang, and Hong-shi Zong
Different critical points of chiral and deconfinement phase transitions in (2+1)-dimensional fermion-gauge interacting model
5 Pages and 3 figures
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Based on the truncated Dyson-Schwinger equations for fermion and massive boson propagators in QED$_3$, the fermion chiral condensate and the mass singularities of the fermion propagator via the Schwinger function are investigated. It is shown that the critical point of chiral phase transition is apparently different ...
[ { "created": "Wed, 12 Feb 2014 03:06:39 GMT", "version": "v1" } ]
2014-02-13
[ [ "Feng", "Hong-tao", "" ], [ "Hou", "Feng-yao", "" ], [ "Xia", "Yong-hui", "" ], [ "Wang", "Jun-yi", "" ], [ "Zong", "Hong-shi", "" ] ]
Based on the truncated Dyson-Schwinger equations for fermion and massive boson propagators in QED$_3$, the fermion chiral condensate and the mass singularities of the fermion propagator via the Schwinger function are investigated. It is shown that the critical point of chiral phase transition is apparently different fr...
1107.1026
Kotaro Tamai Mr.
Takuya Morozumi, Hiroyuki Takata and Kotaro Tamai
Quantum correction to tiny vacuum expectation value in two Higgs doublet model for Dirac neutrino mass
27 pages,5 figures. The version corresponds to the revised one accepted in PRD. In version 4, we have corrected errors of Fig.5 which reflects the errata of PRD version
null
10.1103/PhysRevD.85.055002
HUPD1101
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study a Dirac neutrino mass model of Davidson and Logan. In the model, the smallness of the neutrino mass is originated from the small vacuum expectation value of the second Higgs of two Higgs doublets. We study the one loop effective potential of the Higgs sector and examine how the small vacuum expectation is st...
[ { "created": "Wed, 6 Jul 2011 05:15:00 GMT", "version": "v1" }, { "created": "Fri, 8 Jul 2011 06:40:24 GMT", "version": "v2" }, { "created": "Fri, 16 Dec 2011 09:46:30 GMT", "version": "v3" }, { "created": "Thu, 3 Apr 2014 05:42:16 GMT", "version": "v4" } ]
2014-04-04
[ [ "Morozumi", "Takuya", "" ], [ "Takata", "Hiroyuki", "" ], [ "Tamai", "Kotaro", "" ] ]
We study a Dirac neutrino mass model of Davidson and Logan. In the model, the smallness of the neutrino mass is originated from the small vacuum expectation value of the second Higgs of two Higgs doublets. We study the one loop effective potential of the Higgs sector and examine how the small vacuum expectation is stab...
2403.14419
Rikkert Frederix
Rikkert Frederix and Tetiana Moskalets
Five-flavour scheme predictions for $t\bar{t}b\bar{b}$ at next-to-leading order accuracy
10 pages, 2 figures
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We compute top quark pair production in association with a bottom quark pair at the LHC within the five-flavour scheme, employing the FxFx merging scheme for $t\bar{t}+\textrm{jets}$ production with up to 2 jets at NLO accuracy. To enhance the selection efficiency for the events with $b$-jets within the inclusive fiv...
[ { "created": "Thu, 21 Mar 2024 14:08:31 GMT", "version": "v1" } ]
2024-03-22
[ [ "Frederix", "Rikkert", "" ], [ "Moskalets", "Tetiana", "" ] ]
We compute top quark pair production in association with a bottom quark pair at the LHC within the five-flavour scheme, employing the FxFx merging scheme for $t\bar{t}+\textrm{jets}$ production with up to 2 jets at NLO accuracy. To enhance the selection efficiency for the events with $b$-jets within the inclusive five-...
hep-ph/0204142
Maxim Perelstein
Z. Chacko, C. Grojean, M. Perelstein
Fine Structure Constant Variation from a Late Phase Transition
9 pages. V2: discussion on the energy density stored in the scalar oscillations after the phase transition expanded. Typos corrected and Refs. added. Version to appear in PLB
Phys.Lett. B565 (2003) 169-175
10.1016/S0370-2693(03)00766-4
null
hep-ph astro-ph
null
Recent experimental data indicates that the fine structure constant alpha may be varying on cosmological time scales. We consider the possibility that such a variation could be induced by a second order phase transition which occurs at late times (z ~ 1 - 3) and involves a change in the vacuum expectation value (vev)...
[ { "created": "Fri, 12 Apr 2002 17:39:44 GMT", "version": "v1" }, { "created": "Thu, 26 Jun 2003 16:25:49 GMT", "version": "v2" } ]
2010-04-05
[ [ "Chacko", "Z.", "" ], [ "Grojean", "C.", "" ], [ "Perelstein", "M.", "" ] ]
Recent experimental data indicates that the fine structure constant alpha may be varying on cosmological time scales. We consider the possibility that such a variation could be induced by a second order phase transition which occurs at late times (z ~ 1 - 3) and involves a change in the vacuum expectation value (vev) o...
1307.3764
Valentin V. Khoze
Valentin V. Khoze and Gunnar Ro
Leptogenesis and Neutrino Oscillations in the Classically Conformal Standard Model with the Higgs Portal
23 pages, 9 figures, v2: references added, minor corrections, v3: matches the version published in JHEP
null
10.1007/JHEP10(2013)075
DCPT/13/102, IPPP/13/51
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The Standard Model with an added Higgs portal interaction and no explicit mass terms is a classically scale-invariant theory. In this case the scale of electroweak symmetry breaking can be induced radiatively by the Coleman-Weinberg mechanism operational in a hidden sector, and then transmitted to the Standard Model ...
[ { "created": "Sun, 14 Jul 2013 18:35:27 GMT", "version": "v1" }, { "created": "Wed, 14 Aug 2013 20:53:03 GMT", "version": "v2" }, { "created": "Thu, 26 Sep 2013 09:14:41 GMT", "version": "v3" } ]
2015-06-16
[ [ "Khoze", "Valentin V.", "" ], [ "Ro", "Gunnar", "" ] ]
The Standard Model with an added Higgs portal interaction and no explicit mass terms is a classically scale-invariant theory. In this case the scale of electroweak symmetry breaking can be induced radiatively by the Coleman-Weinberg mechanism operational in a hidden sector, and then transmitted to the Standard Model th...
1006.1356
Daniel Stolarski
Martin Schmaltz, Daniel Stolarski, Jesse Thaler
The Bestest Little Higgs
40 pages, 7 figures
JHEP 1009:018,2010
10.1007/JHEP09(2010)018
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
While little Higgs models provide an interesting way to address the hierarchy problem, concrete models in the literature typically face two major obstacles. First, the mechanism for generating a Higgs quartic coupling often leads to large violations of custodial symmetry. Second, there is a tension between precision ...
[ { "created": "Mon, 7 Jun 2010 20:00:04 GMT", "version": "v1" } ]
2014-11-21
[ [ "Schmaltz", "Martin", "" ], [ "Stolarski", "Daniel", "" ], [ "Thaler", "Jesse", "" ] ]
While little Higgs models provide an interesting way to address the hierarchy problem, concrete models in the literature typically face two major obstacles. First, the mechanism for generating a Higgs quartic coupling often leads to large violations of custodial symmetry. Second, there is a tension between precision el...
hep-ph/9403375
null
M.E. Carrington and G. Kunstatter
Massless Scalar QED with Non-minimal Chern Simons Coupling
18 pages, latex, preprint WIN-93-10
Phys.Rev. D50 (1994) 2830-2839
10.1103/PhysRevD.50.2830
null
hep-ph
null
2+1 dimensional massless scalar QED with $(\phi^*\phi)^3$ scalar self-coupling is modified by the addition of a non- minimal Chern-Simons term that couples the dual of the electromagnetic field strength to the covariant current of the complex scalar field. The theory is shown to be fully one- loop renormalizable. The...
[ { "created": "Mon, 28 Mar 1994 15:53:08 GMT", "version": "v1" } ]
2009-10-28
[ [ "Carrington", "M. E.", "" ], [ "Kunstatter", "G.", "" ] ]
2+1 dimensional massless scalar QED with $(\phi^*\phi)^3$ scalar self-coupling is modified by the addition of a non- minimal Chern-Simons term that couples the dual of the electromagnetic field strength to the covariant current of the complex scalar field. The theory is shown to be fully one- loop renormalizable. The o...