id
stringlengths
9
14
submitter
stringlengths
1
56
authors
stringlengths
5
7.68k
title
stringlengths
3
299
comments
stringlengths
1
1.15k
journal-ref
stringlengths
9
298
doi
stringlengths
12
97
report-no
stringlengths
3
341
categories
stringclasses
869 values
license
stringclasses
9 values
orig_abstract
stringlengths
16
2.44k
versions
listlengths
1
39
update_date
stringlengths
10
10
authors_parsed
listlengths
1
565
abstract
stringlengths
13
2.44k
hep-ph/0302076
Sandrine Sciarrino
Patrick Janot
The Light Gluino Mass Window Revisited
Slightly revised version (new references, cosmetic changes, ...) after Phys. Lett. refereeing Accepted by Phys. Lett
Phys.Lett.B564:183-189,2003
10.1016/S0370-2693(03)00539-2
CERN-EP/2003-004
hep-ph
null
The precise measurements of the ``electroweak observables'' performed at LEP and SLC are well consistent with the standard model predictions. Deviations from the standard model arising from vacuum polarization diagrams (also called ``weak loop corrections'') have been constrained in a model-independent manner with th...
[ { "created": "Tue, 11 Feb 2003 08:53:23 GMT", "version": "v1" }, { "created": "Tue, 1 Apr 2003 06:31:12 GMT", "version": "v2" }, { "created": "Thu, 3 Apr 2003 06:46:26 GMT", "version": "v3" } ]
2009-09-29
[ [ "Janot", "Patrick", "" ] ]
The precise measurements of the ``electroweak observables'' performed at LEP and SLC are well consistent with the standard model predictions. Deviations from the standard model arising from vacuum polarization diagrams (also called ``weak loop corrections'') have been constrained in a model-independent manner with the ...
0901.3301
Ahmad Idilbi S
Ahmad idilbi and Chul Kim
Factorization and resummation for color octet production
To appear in the proceedings of PANIC08
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We discuss the production of heavy colored paricles at the Large Hadron Collider (LHC) through gluon-gluon fusion process. A factorization theorem is obtained for this process using Soft Collinear Effective Theory. Our factorization theorem does not depend on any assumptions regarding the physics above the mass of th...
[ { "created": "Wed, 21 Jan 2009 16:00:15 GMT", "version": "v1" } ]
2009-01-22
[ [ "idilbi", "Ahmad", "" ], [ "Kim", "Chul", "" ] ]
We discuss the production of heavy colored paricles at the Large Hadron Collider (LHC) through gluon-gluon fusion process. A factorization theorem is obtained for this process using Soft Collinear Effective Theory. Our factorization theorem does not depend on any assumptions regarding the physics above the mass of the ...
hep-ph/9911257
null
David H Lyth (Lancaster)
The gravitino abundance in supersymmetric `new' inflation models
9 pages latex. Same results but argument for late-time creation now appears in hep-ph/9912313
Phys.Lett. B488 (2000) 417-422
10.1016/S0370-2693(00)00878-9
LANCS-TH/9922
hep-ph astro-ph hep-th
null
We consider the abundance of gravitinos created from the vacuum fluctuation, in a class of `new' inflation models for which global supersymmetry is a good approximation. Immediately after inflation, gravitinos are produced, with number density determined by equations recently presented by Kallosh et. al. (hep-th/9907...
[ { "created": "Fri, 5 Nov 1999 17:23:45 GMT", "version": "v1" }, { "created": "Sun, 12 Dec 1999 10:25:27 GMT", "version": "v2" } ]
2009-10-31
[ [ "Lyth", "David H", "", "Lancaster" ] ]
We consider the abundance of gravitinos created from the vacuum fluctuation, in a class of `new' inflation models for which global supersymmetry is a good approximation. Immediately after inflation, gravitinos are produced, with number density determined by equations recently presented by Kallosh et. al. (hep-th/990712...
0901.2966
J. P. Ma
H.G. Cao, J.P. Ma and H.Z. Sang
Single Transverse Spin Asymmetries at Parton Level
shortened version to match published version
Commun.Theor.Phys.53:313-324,2010
10.1088/0253-6102/53/2/21
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Two factorization approaches have been proposed for single transverse spin asymmetries. One is the collinear factorization, another is the transverse-momentum-dependent factorization. They have been previously derived in a formal way by using diagram expansion at hadron level. If the two factorizations hold or can be...
[ { "created": "Tue, 20 Jan 2009 01:46:18 GMT", "version": "v1" }, { "created": "Thu, 9 Jul 2009 07:34:45 GMT", "version": "v2" }, { "created": "Thu, 15 Oct 2009 07:44:47 GMT", "version": "v3" }, { "created": "Tue, 15 Dec 2009 05:32:14 GMT", "version": "v4" } ]
2014-11-18
[ [ "Cao", "H. G.", "" ], [ "Ma", "J. P.", "" ], [ "Sang", "H. Z.", "" ] ]
Two factorization approaches have been proposed for single transverse spin asymmetries. One is the collinear factorization, another is the transverse-momentum-dependent factorization. They have been previously derived in a formal way by using diagram expansion at hadron level. If the two factorizations hold or can be p...
hep-ph/9712498
W. S. Hou
George Wei-Shu Hou
New Physics and Enhanced Gluonic Penguin
6 pages, aipproc.sty, 2 figs. (included). Talk presented at b20 Conference, Chicago, June 29 - July 2, 1997
null
null
null
hep-ph
null
We discuss the historical development of the gluonic B-penguin, its sensitivity to $H^+$ effects, and $\bsg\sim$ 10--15% as a possible solution to the $\Bsl$ and $n_C$ problems. The latter and the connection of the gluonic penguin to inclusive $B\to \eta^\prime+ X_s$ production through the gluon anomaly, with the int...
[ { "created": "Tue, 23 Dec 1997 01:58:54 GMT", "version": "v1" } ]
2007-05-23
[ [ "Hou", "George Wei-Shu", "" ] ]
We discuss the historical development of the gluonic B-penguin, its sensitivity to $H^+$ effects, and $\bsg\sim$ 10--15% as a possible solution to the $\Bsl$ and $n_C$ problems. The latter and the connection of the gluonic penguin to inclusive $B\to \eta^\prime+ X_s$ production through the gluon anomaly, with the intri...
2204.09198
Junquan Tao
Chu Wang, Jun-Quan Tao, M. Aamir Shahzad, Guo-Ming Chen, S. Gascon-Shotkin
Search for a lighter neutral custodial fiveplet scalar in the Georgi-Machacek model
8 pages, 5 figures, submitted to Chinese Physics C
Chinese Physics C 2022
10.1088/1674-1137/ac6cd3
46(8): 083107
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Many researches from both the theoretical and experimental sides have been performed to search for a new Higgs Boson lighter than the 125 $GeV$ Higgs boson which was discovered at the LHC in 2012. In this paper we explore the possibility of constraining a lighter neutral custodial fiveplet scalar $H_{5}^{0}$ in the G...
[ { "created": "Wed, 20 Apr 2022 02:58:28 GMT", "version": "v1" } ]
2022-08-15
[ [ "Wang", "Chu", "" ], [ "Tao", "Jun-Quan", "" ], [ "Shahzad", "M. Aamir", "" ], [ "Chen", "Guo-Ming", "" ], [ "Gascon-Shotkin", "S.", "" ] ]
Many researches from both the theoretical and experimental sides have been performed to search for a new Higgs Boson lighter than the 125 $GeV$ Higgs boson which was discovered at the LHC in 2012. In this paper we explore the possibility of constraining a lighter neutral custodial fiveplet scalar $H_{5}^{0}$ in the Geo...
2202.08873
Renato Zamora
M. Loewe and R. Zamora
Renormalons in a scalar self interacting theory: thermal, thermomagnetic and thermoelectric corrections for all values of temperature
New comments were added. Present version accepted for publication in Physical Review D. arXiv admin note: substantial text overlap with arXiv:2105.01156, arXiv:1901.06426
null
10.1103/PhysRevD.105.076011
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this article we revisit the discussion of renormalons in the frame of a scalar self-interacting $\lambda \phi^{4}$ theory in the presence of thermomagnetic effects, i.e magnetic and thermal effects. Our results for the evolution of the residues is now given by an explicit analytic expression, valid for all values ...
[ { "created": "Thu, 17 Feb 2022 19:15:25 GMT", "version": "v1" }, { "created": "Wed, 23 Feb 2022 13:28:28 GMT", "version": "v2" }, { "created": "Thu, 24 Mar 2022 16:14:06 GMT", "version": "v3" } ]
2022-04-27
[ [ "Loewe", "M.", "" ], [ "Zamora", "R.", "" ] ]
In this article we revisit the discussion of renormalons in the frame of a scalar self-interacting $\lambda \phi^{4}$ theory in the presence of thermomagnetic effects, i.e magnetic and thermal effects. Our results for the evolution of the residues is now given by an explicit analytic expression, valid for all values of...
1306.5841
Jing Shu
Jinmian Li, Da Liu, Jing Shu
Towards the fate of natural composite Higgs model through single $t^\prime$ search at the 8 TeV LHC
22 pages, 8 figures, 5 tables, refs added in v2
null
10.1007/JHEP11(2013)047
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We analyze the observational potential of single $t'$ production in both the $t^\prime \rightarrow bW$ and $t^\prime \rightarrow th$ decay channels at 8 TeV LHC using an integrated luminosity of 25 $\text{fb}^{-1}$. Our analysis is based on a simplified model with minimal coset $SO(5)/SO(4)$ in which the $t'$ is a si...
[ { "created": "Tue, 25 Jun 2013 03:23:05 GMT", "version": "v1" }, { "created": "Mon, 1 Jul 2013 03:00:23 GMT", "version": "v2" } ]
2015-06-16
[ [ "Li", "Jinmian", "" ], [ "Liu", "Da", "" ], [ "Shu", "Jing", "" ] ]
We analyze the observational potential of single $t'$ production in both the $t^\prime \rightarrow bW$ and $t^\prime \rightarrow th$ decay channels at 8 TeV LHC using an integrated luminosity of 25 $\text{fb}^{-1}$. Our analysis is based on a simplified model with minimal coset $SO(5)/SO(4)$ in which the $t'$ is a sing...
hep-ph/0309154
Erhan Iltan
E. O. Iltan
The Lorentz and CPT violating effects on H^0\to f^+ f^- (ZZ, W^+ W^-) decays
10 Pages, 3 Figures
Mod.Phys.Lett. A19 (2004) 327-336
10.1142/S0217732304012964
null
hep-ph
null
We study the Lorentz and CPT violating effects on the ratio \frac{BR_{LorVio}}{BR_{SM}}, where BR_{LorVio} (BR_{SM}) is the branching ratios coming from the Lorentz violating effects (the SM), for the decays H^0\to f^+ f^- (f= quarks and charged leptons) and H^0\to ZZ (W^+ W^-). We observe that these new effects are ...
[ { "created": "Sun, 14 Sep 2003 10:39:47 GMT", "version": "v1" } ]
2009-11-10
[ [ "Iltan", "E. O.", "" ] ]
We study the Lorentz and CPT violating effects on the ratio \frac{BR_{LorVio}}{BR_{SM}}, where BR_{LorVio} (BR_{SM}) is the branching ratios coming from the Lorentz violating effects (the SM), for the decays H^0\to f^+ f^- (f= quarks and charged leptons) and H^0\to ZZ (W^+ W^-). We observe that these new effects are to...
hep-ph/0611033
Oliver Brein
Oliver Brein, Wolfgang Hollik and Benjamin Koch
Towards a Realistic MSSM Prediction for Neutrino-nucleon Deep-inelastic Scattering
5 pages, 2 figures, to appear in Proceedings of SUSY06, the 14th International Conference on Supersymmetry and the Unification of Fundamental Interactions, UC Irvine, California, 12-17 June 2006
AIPConf.Proc.903:181-184,2007
10.1063/1.2735155
IPPP/06/74, DCPT/06/148, MPP-2006-139
hep-ph
null
We discuss the radiative corrections to charged and neutral current deep-inelastic neutrino--nucleon scattering in the minimal supersymmetric standard model (MSSM). In particular, we study deviations, delta_R^nu(nu-bar), from the Standard Model prediction for the ratios of neutral- to charged-current cross sections, ...
[ { "created": "Thu, 2 Nov 2006 19:15:42 GMT", "version": "v1" } ]
2008-11-26
[ [ "Brein", "Oliver", "" ], [ "Hollik", "Wolfgang", "" ], [ "Koch", "Benjamin", "" ] ]
We discuss the radiative corrections to charged and neutral current deep-inelastic neutrino--nucleon scattering in the minimal supersymmetric standard model (MSSM). In particular, we study deviations, delta_R^nu(nu-bar), from the Standard Model prediction for the ratios of neutral- to charged-current cross sections, ta...
1311.1637
Russell Kirk
Mark Hindmarsh, Russell Kirk and Stephen M. West
Dark Matter from Decaying Topological Defects
22 pages, 10 figures
null
10.1088/1475-7516/2014/03/037
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study dark matter production by decaying topological defects, in particular cosmic strings. In topological defect or "top-down" (TD) scenarios, the dark matter injection rate varies as a power law with time with exponent $p-4$. We find a formula in closed form for the yield for all $p < 3/2$, which accurately repr...
[ { "created": "Thu, 7 Nov 2013 10:51:21 GMT", "version": "v1" }, { "created": "Thu, 13 Feb 2014 11:42:49 GMT", "version": "v2" } ]
2015-06-17
[ [ "Hindmarsh", "Mark", "" ], [ "Kirk", "Russell", "" ], [ "West", "Stephen M.", "" ] ]
We study dark matter production by decaying topological defects, in particular cosmic strings. In topological defect or "top-down" (TD) scenarios, the dark matter injection rate varies as a power law with time with exponent $p-4$. We find a formula in closed form for the yield for all $p < 3/2$, which accurately reprod...
1505.04783
Neda Razzaghi
N. Razzaghi
Neutrino mixing matrix and masses at a particular point of the generalized Fridberg-Lee model
arXiv admin note: text overlap with arXiv:0811.0905 by other authors
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We propose the generalized Friedberg-Lee model neutrino mass model at a particular point (point D at which $\alpha=\beta=-\frac{1}{3}$) where at this point, the generalized Fridberg-Lee model is converted to the Democratic mass matrix with the $S_3$ symmetry. The Democratic texture has an experimentally unfavored deg...
[ { "created": "Sun, 17 May 2015 04:37:44 GMT", "version": "v1" }, { "created": "Sun, 10 Jul 2022 11:17:45 GMT", "version": "v2" }, { "created": "Mon, 14 Aug 2023 08:41:46 GMT", "version": "v3" } ]
2023-08-15
[ [ "Razzaghi", "N.", "" ] ]
We propose the generalized Friedberg-Lee model neutrino mass model at a particular point (point D at which $\alpha=\beta=-\frac{1}{3}$) where at this point, the generalized Fridberg-Lee model is converted to the Democratic mass matrix with the $S_3$ symmetry. The Democratic texture has an experimentally unfavored degen...
hep-ph/0401011
Kiwoon Choi
Kiwoon Choi
Gauge Unification and Flavor Hierarchy from Extra Dimensions
5 pages, Revtex4, To appear in the Proceedings of SUSY03, held at the University of Arizona, Tucson, AZ, USA, June 5-10, 2003
null
null
null
hep-ph
null
Extra dimension provides an attractive way to break symmetry by boundary conditions which can be useful to construct a natural grand unified theory avoiding the doublet-triplet splitting problem and the proton decay problem. It can provide also an elegant mechanism to generate hierarchical 4-dimensional Yukawa coupli...
[ { "created": "Sun, 4 Jan 2004 08:48:05 GMT", "version": "v1" } ]
2007-05-23
[ [ "Choi", "Kiwoon", "" ] ]
Extra dimension provides an attractive way to break symmetry by boundary conditions which can be useful to construct a natural grand unified theory avoiding the doublet-triplet splitting problem and the proton decay problem. It can provide also an elegant mechanism to generate hierarchical 4-dimensional Yukawa coupling...
2407.00183
Sumit Biswas
Rahool Kumar Barman and Sumit Biswas
Top-philic Machine Learning
A short review prepared by invitation for EPJ Special Topics issue. Version accepted for publication; 45 pages, 17 figures, 1 table; v2: typos corrected
Eur. Phys. J. Spec. Top. (2024)
10.1140/epjs/s11734-024-01237-9
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
In this article, we review the application of modern machine-learning (ML) techniques to boost the search for processes involving the top quarks at the LHC. We revisit the formalism of Convolutional Neural Networks (CNNs), Graph Neural Networks (GNNs), and Attention Mechanisms. Based on recent studies, we explore the...
[ { "created": "Fri, 28 Jun 2024 18:38:30 GMT", "version": "v1" }, { "created": "Tue, 2 Jul 2024 16:21:05 GMT", "version": "v2" } ]
2024-07-29
[ [ "Barman", "Rahool Kumar", "" ], [ "Biswas", "Sumit", "" ] ]
In this article, we review the application of modern machine-learning (ML) techniques to boost the search for processes involving the top quarks at the LHC. We revisit the formalism of Convolutional Neural Networks (CNNs), Graph Neural Networks (GNNs), and Attention Mechanisms. Based on recent studies, we explore their...
hep-ph/9511462
Sechul Oh
N.G. Deshpande, Xiao-Gang He and Sechul Oh
A Study of Some Methods for Measuring CKM CP Violating Phases
25 pages (Latex), 5 PS figs (uuencoded, epsf.tex)
Z.Phys.C74:359-368,1997
10.1007/s002880050398
OITS-593
hep-ph
null
We study the influence of penguin (especially, electroweak penguin) effects on some methods of measuring the angles $\alpha$, $\beta$, and $\gamma$ in the CKM unitarity triangle. We use next-to-leading order effective Hamiltonian, and present numerical estimates based on the factorization approximation. We find that ...
[ { "created": "Wed, 29 Nov 1995 21:56:21 GMT", "version": "v1" } ]
2010-11-23
[ [ "Deshpande", "N. G.", "" ], [ "He", "Xiao-Gang", "" ], [ "Oh", "Sechul", "" ] ]
We study the influence of penguin (especially, electroweak penguin) effects on some methods of measuring the angles $\alpha$, $\beta$, and $\gamma$ in the CKM unitarity triangle. We use next-to-leading order effective Hamiltonian, and present numerical estimates based on the factorization approximation. We find that so...
2204.11599
Andrej Liptaj
Stanislav Dubni\v{c}ka, Anna Zuzana Dubni\v{c}kov\'a, Mikhail Alekseevich Ivanov, Andrej Liptaj
Decays $B\rightarrow D_{\left(s\right)}^{\left(*\right)}h$ ($h=\pi,\rho$) in confined covariant quark model
null
null
null
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
Decay processes $B\rightarrow D_{\left(s\right)}^{\left(*\right)}h$ ($h=\pi,\rho$) are studied in the framework of the confined covariant quark model using the na\"{i}ve factorization assumption. We observe that the theoretical results on branching fractions have tendency to systematically exceed the experimental num...
[ { "created": "Mon, 25 Apr 2022 12:35:24 GMT", "version": "v1" }, { "created": "Fri, 17 Jun 2022 08:42:58 GMT", "version": "v2" } ]
2022-06-20
[ [ "Dubnička", "Stanislav", "" ], [ "Dubničková", "Anna Zuzana", "" ], [ "Ivanov", "Mikhail Alekseevich", "" ], [ "Liptaj", "Andrej", "" ] ]
Decay processes $B\rightarrow D_{\left(s\right)}^{\left(*\right)}h$ ($h=\pi,\rho$) are studied in the framework of the confined covariant quark model using the na\"{i}ve factorization assumption. We observe that the theoretical results on branching fractions have tendency to systematically exceed the experimental numbe...
1301.0090
Lei Wang
Xiao-Fang Han, Lei Wang, Jin Min Yang, Jingya Zhu
Little Higgs theory confronted with the LHC Higgs data
20 pages, 7 figures, 1 table, Higgs data updated, references added
null
10.1103/PhysRevD.87.055004
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We confront the little Higgs theory with the LHC Higgs search data (up to 17 fb$^{-1}$ of the combined 7 and 8 TeV run). Considering some typical models, namely the littlest Higgs model (LH), the littlest Higgs model with T-parity (LHT-A and LHT-B) and the simplest little Higgs model (SLH), we scan over the parameter...
[ { "created": "Tue, 1 Jan 2013 14:21:59 GMT", "version": "v1" }, { "created": "Mon, 14 Jan 2013 14:06:47 GMT", "version": "v2" } ]
2013-03-14
[ [ "Han", "Xiao-Fang", "" ], [ "Wang", "Lei", "" ], [ "Yang", "Jin Min", "" ], [ "Zhu", "Jingya", "" ] ]
We confront the little Higgs theory with the LHC Higgs search data (up to 17 fb$^{-1}$ of the combined 7 and 8 TeV run). Considering some typical models, namely the littlest Higgs model (LH), the littlest Higgs model with T-parity (LHT-A and LHT-B) and the simplest little Higgs model (SLH), we scan over the parameter s...
hep-ph/9607387
Kimyeonggyun
C. S. Kim, Jae Kwan Kim, Yeong Gyun Kim and Kang Young Lee
Form Factors for Exclusive Semileptonic $B$--Decays
14 pages, LaTex file, 3 ps figure files. To be published by Int. J. Mod. Phys. A (1996)
Int.J.Mod.Phys. A12 (1997) 2031-2046
10.1142/S0217751X97001286
KAIST-CHEP-96/07
hep-ph
null
We investigate the form factors for exclusive semileptonic decays of $B$-meson to $D,~D^*$, based on the parton picture and helped by the results of the HQET. We obtain the numerical results for the slope of the Isgur-Wise function, which is consistent with the experimental results, and we extracte the dependences of...
[ { "created": "Mon, 22 Jul 1996 20:34:47 GMT", "version": "v1" } ]
2015-06-25
[ [ "Kim", "C. S.", "" ], [ "Kim", "Jae Kwan", "" ], [ "Kim", "Yeong Gyun", "" ], [ "Lee", "Kang Young", "" ] ]
We investigate the form factors for exclusive semileptonic decays of $B$-meson to $D,~D^*$, based on the parton picture and helped by the results of the HQET. We obtain the numerical results for the slope of the Isgur-Wise function, which is consistent with the experimental results, and we extracte the dependences of h...
hep-ph/0605033
Cristina Volpe
Cristina Volpe (Institut de Physique Nucleaire Orsay, France)
Topical Review on "Beta-beams"
Topical Review for Journal of Physics G: Nuclear and Particle Physics, published version, minor corrections, references added
J.Phys.G34:R1-R44,2007
10.1088/0954-3899/34/1/R01
null
hep-ph astro-ph hep-ex nucl-ex nucl-th
null
Neutrino physics is traversing an exciting period, after the important discovery that neutrinos are massive particles, that has implications from high-energy physics to cosmology. A new method for the production of intense and pure neutrino beams has been proposed recently: the ``beta-beam''. It exploits boosted radi...
[ { "created": "Wed, 3 May 2006 15:14:12 GMT", "version": "v1" }, { "created": "Mon, 20 Nov 2006 17:16:48 GMT", "version": "v2" } ]
2009-11-11
[ [ "Volpe", "Cristina", "", "Institut de Physique Nucleaire Orsay, France" ] ]
Neutrino physics is traversing an exciting period, after the important discovery that neutrinos are massive particles, that has implications from high-energy physics to cosmology. A new method for the production of intense and pure neutrino beams has been proposed recently: the ``beta-beam''. It exploits boosted radioa...
1406.6243
Marco Drewes
Marco Drewes
On finite density effects on cosmic reheating and moduli decay and implications for Dark Matter production
20 pages, 4 figures, matches version to appear in JCAP
JCAP 11 (2014) 020
10.1088/1475-7516/2014/11/020
TUM-HEP-949/14, NSF-KITP-14-059
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the damping of an oscillating scalar field in a Friedmann-Robertson-Walker spacetime by perturbative processes, taking into account the finite density effects that interactions with the plasma of decay products have on the damping rate. The scalar field may be identified with the inflaton, in which case this...
[ { "created": "Tue, 24 Jun 2014 14:12:57 GMT", "version": "v1" }, { "created": "Thu, 30 Oct 2014 17:13:47 GMT", "version": "v2" } ]
2014-11-18
[ [ "Drewes", "Marco", "" ] ]
We study the damping of an oscillating scalar field in a Friedmann-Robertson-Walker spacetime by perturbative processes, taking into account the finite density effects that interactions with the plasma of decay products have on the damping rate. The scalar field may be identified with the inflaton, in which case this p...
0810.5651
Javier Vijande Asenjo
El Houssine Mezoir, P. Gonzalez
Is the spectrum of highly excited mesons purely coulombian?
4 pages, accepted for publication in Phys. Rev. Lett
Phys.Rev.Lett.101:232001,2008
10.1103/PhysRevLett.101.232001
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We show that a static central potential may provide a precise description of highly excited light unflavoured mesons. Due to string breaking this potential becomes of chromoelectric type at sufficiently large quark-antiquark distances giving rise to a coulombian spectrum. The same conclusion can be inferred for any o...
[ { "created": "Fri, 31 Oct 2008 10:24:53 GMT", "version": "v1" } ]
2010-04-28
[ [ "Mezoir", "El Houssine", "" ], [ "Gonzalez", "P.", "" ] ]
We show that a static central potential may provide a precise description of highly excited light unflavoured mesons. Due to string breaking this potential becomes of chromoelectric type at sufficiently large quark-antiquark distances giving rise to a coulombian spectrum. The same conclusion can be inferred for any oth...
hep-ph/0411008
Adrian Signer
M.Beneke, N.Kauer, A.Signer, G.Zanderighi
Towards pair production near threshold with unstable particle effective theory
Invited talk given at the 11th International Conference on QCD, Montpellier, France (5--10th July 2004)
Nucl.Phys.Proc.Suppl.152:162-167,2006
10.1016/j.nuclphysbps.2005.08.031
null
hep-ph
null
We illustrate the use of effective theory techniques to describe processes involving unstable particles close to resonance. First, we present the main ideas in the context of a scalar resonance in an Abelian gauge-Yukawa model. We then outline the necessary modifications to describe W-pair production close to thresho...
[ { "created": "Sun, 31 Oct 2004 11:09:25 GMT", "version": "v1" } ]
2009-11-10
[ [ "Beneke", "M.", "" ], [ "Kauer", "N.", "" ], [ "Signer", "A.", "" ], [ "Zanderighi", "G.", "" ] ]
We illustrate the use of effective theory techniques to describe processes involving unstable particles close to resonance. First, we present the main ideas in the context of a scalar resonance in an Abelian gauge-Yukawa model. We then outline the necessary modifications to describe W-pair production close to threshold...
1112.2800
B J Hazarika
B. J. Hazarika, D. K. Choudhury
Isgur-Wise function in a QCD inspired potential model with WKB Approximation
null
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We use WKB Approximation in the calculation of slope and curvature of Isgur-Wise function in a QCD inspired potential model.This work is an extension of the approximation methods to the QCD inspired potential model.The approach hints at an effective range of distance for the calculation of slope and curvature of Isgu...
[ { "created": "Tue, 13 Dec 2011 06:02:30 GMT", "version": "v1" } ]
2011-12-14
[ [ "Hazarika", "B. J.", "" ], [ "Choudhury", "D. K.", "" ] ]
We use WKB Approximation in the calculation of slope and curvature of Isgur-Wise function in a QCD inspired potential model.This work is an extension of the approximation methods to the QCD inspired potential model.The approach hints at an effective range of distance for the calculation of slope and curvature of Isgur-...
1807.04583
Goutam Das
Pulak Banerjee, Goutam Das, Prasanna K. Dhani and V. Ravindran
Threshold resummation in rapidity for colorless particle production at LHC
8 pages, 7 figures, 1 table, talk presented at the Loops and Legs in Quantum Field Theory (LL2018)
null
null
DESY 18-115
hep-ph
http://creativecommons.org/licenses/by/4.0/
We present a formalism to resum large threshold logarithms to all orders in perturbative QCD for the rapidity distribution of any colorless particle at the hadron colliders. Using the derived resummed coefficients in two dimensional Mellin space, we present the rapidity distributions for the Higgs as well as for the ...
[ { "created": "Thu, 12 Jul 2018 12:50:11 GMT", "version": "v1" } ]
2018-07-13
[ [ "Banerjee", "Pulak", "" ], [ "Das", "Goutam", "" ], [ "Dhani", "Prasanna K.", "" ], [ "Ravindran", "V.", "" ] ]
We present a formalism to resum large threshold logarithms to all orders in perturbative QCD for the rapidity distribution of any colorless particle at the hadron colliders. Using the derived resummed coefficients in two dimensional Mellin space, we present the rapidity distributions for the Higgs as well as for the Dr...
0902.4278
Jun Wu
Jun Wu, Chiu-Man Ho, and Daniel Boyanovsky
Sterile neutrinos produced near the EW scale I: mixing angles, MSW resonances and production rates
31 pages
Phys.Rev.D80:103511,2009
10.1103/PhysRevD.80.103511
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the production of sterile neutrinos in the region $T\sim M_W$ in an extension beyond the standard model with the see-saw mass matrix originating in Yukawa couplings to Higgs-like scalars with masses and vev's of the order of the electroweak scale. Sterile neutrinos are produced by the decay of scalars and st...
[ { "created": "Wed, 25 Feb 2009 02:07:45 GMT", "version": "v1" }, { "created": "Wed, 18 Nov 2009 06:05:13 GMT", "version": "v2" } ]
2014-11-18
[ [ "Wu", "Jun", "" ], [ "Ho", "Chiu-Man", "" ], [ "Boyanovsky", "Daniel", "" ] ]
We study the production of sterile neutrinos in the region $T\sim M_W$ in an extension beyond the standard model with the see-saw mass matrix originating in Yukawa couplings to Higgs-like scalars with masses and vev's of the order of the electroweak scale. Sterile neutrinos are produced by the decay of scalars and stan...
hep-ph/9405411
Arnd Leike
Harald Fritzsch
Flavour Mixing and Fermion Mass Generation as a Result of Symmetry Breaking
9 pages, report MPI-PHT/94-29
null
null
null
hep-ph
null
It is shown that a simple breaking of the subnuclear democracy leads to a successful description of the mixing between the second and third family. In the lepton channel the $\nu _{\mu } - \nu_{\tau }$ oscillations are expected to be described by a mixing angle of $2.65^ {\circ }$ which might be observed soon in neut...
[ { "created": "Mon, 30 May 1994 07:18:36 GMT", "version": "v1" } ]
2007-05-23
[ [ "Fritzsch", "Harald", "" ] ]
It is shown that a simple breaking of the subnuclear democracy leads to a successful description of the mixing between the second and third family. In the lepton channel the $\nu _{\mu } - \nu_{\tau }$ oscillations are expected to be described by a mixing angle of $2.65^ {\circ }$ which might be observed soon in neutri...
hep-ph/0202234
Marek Karliner
Marek Karliner and Shmuel Nussinov (Tel Aviv University)
QCD and e+e- --> Baryon + anti-Baryon
extended discussion of quark loop suppression in baryons in the large-N_c limit; updated refs
Phys.Lett. B538 (2002) 321-326
10.1016/S0370-2693(02)02033-6
TAUP-2679-01
hep-ph
null
We discuss the QCD constraints on e+e- --> baryon-anti-baryon close to threshold, in light of the puzzling experimental data which indicate that close to threshold sigma (e+e- --> n n-bar) > sigma (e+e- --> p p-bar). We focus on the process e+e- --> Delta Delta-bar, which is particularly simple from the theoretical p...
[ { "created": "Mon, 25 Feb 2002 18:27:28 GMT", "version": "v1" }, { "created": "Thu, 6 Jun 2002 11:36:37 GMT", "version": "v2" } ]
2015-06-25
[ [ "Karliner", "Marek", "", "Tel Aviv University" ], [ "Nussinov", "Shmuel", "", "Tel Aviv University" ] ]
We discuss the QCD constraints on e+e- --> baryon-anti-baryon close to threshold, in light of the puzzling experimental data which indicate that close to threshold sigma (e+e- --> n n-bar) > sigma (e+e- --> p p-bar). We focus on the process e+e- --> Delta Delta-bar, which is particularly simple from the theoretical poi...
1706.09578
Jacky Kumar
Jacky Kumar
MSSM vs. NMSSM in $\Delta F=2$ transitions
5 pages, 3 figures, Talk given at the 9th International Workshop on the CKM Unitarity Triangle (CKM2016)
PoS CKM2016 (2017) 132
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study deviations between MSSM and NMSSM in the predictions of $\Delta F=2$ processes. We found that there can be two sources which can cause such deviations, \emph{i.e}, due to certain neutralino-gluino cross box diagrams and due to well known double penguin diagrams. Both are effective at large $\tan \beta$. In a...
[ { "created": "Thu, 29 Jun 2017 04:54:08 GMT", "version": "v1" } ]
2017-06-30
[ [ "Kumar", "Jacky", "" ] ]
We study deviations between MSSM and NMSSM in the predictions of $\Delta F=2$ processes. We found that there can be two sources which can cause such deviations, \emph{i.e}, due to certain neutralino-gluino cross box diagrams and due to well known double penguin diagrams. Both are effective at large $\tan \beta$. In add...
1702.00381
Woosung Park
Woosung Park, Aaron Park, Sungtae Cho, Su Houng Lee
$P_c(4380)$ in a constituent quark model
no figure,10 pages
Phys. Rev. D 95, 054027 (2017)
10.1103/PhysRevD.95.054027
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The constituent quark model with color-spin hyperfine potential is used to investigate the property of a compact pentaquark configuration with $J^p$=$3/2^-$ and isospin=1/2, which is the most likely quantum number of one of the recently observed exotic baryon states at LHCb. Starting from the characterization of the ...
[ { "created": "Wed, 1 Feb 2017 18:18:25 GMT", "version": "v1" } ]
2017-04-05
[ [ "Park", "Woosung", "" ], [ "Park", "Aaron", "" ], [ "Cho", "Sungtae", "" ], [ "Lee", "Su Houng", "" ] ]
The constituent quark model with color-spin hyperfine potential is used to investigate the property of a compact pentaquark configuration with $J^p$=$3/2^-$ and isospin=1/2, which is the most likely quantum number of one of the recently observed exotic baryon states at LHCb. Starting from the characterization of the is...
1402.1462
Jiunn-Wei Chen
Huey-Wen Lin, Jiunn-Wei Chen, Saul D. Cohen, Xiangdong Ji
Flavor Structure of the Nucleon Sea from Lattice QCD
5 pages, 3 figures, version to appear at PRD
Phys. Rev. D 91, 054510 (2015)
10.1103/PhysRevD.91.054510
NT@UW-14-03, INT-PUB-14-002
hep-ph hep-lat nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present the first direct lattice calculation of the isovector sea-quark parton distributions using the formalism developed recently by one of the authors. We use $N_f=2+1+1$ HISQ lattice gauge ensembles (generated by MILC Collaboration) and clover valence fermions with pion mass 310 MeV. We are able to obtain the ...
[ { "created": "Thu, 6 Feb 2014 19:19:56 GMT", "version": "v1" }, { "created": "Fri, 20 Feb 2015 06:32:59 GMT", "version": "v2" } ]
2015-04-01
[ [ "Lin", "Huey-Wen", "" ], [ "Chen", "Jiunn-Wei", "" ], [ "Cohen", "Saul D.", "" ], [ "Ji", "Xiangdong", "" ] ]
We present the first direct lattice calculation of the isovector sea-quark parton distributions using the formalism developed recently by one of the authors. We use $N_f=2+1+1$ HISQ lattice gauge ensembles (generated by MILC Collaboration) and clover valence fermions with pion mass 310 MeV. We are able to obtain the qu...
hep-ph/9305229
Chi-Keung Chow
Chi-Keung Chow and Mark B. Wise
Corrections from Low Momentum Physics to Heavy Quark Symmetry Relations for $B\rightarrow De\bar \nu_e$ and $B\rightarrow D^*e \bar \nu_e$ Decay
14 pages
Phys.Rev. D48 (1993) 5202-5207
10.1103/PhysRevD.48.5202
CALT-68-1862
hep-ph
null
Heavy quark symmetry relations for $B\rightarrow De\bar \nu_e$ and $B\rightarrow D^*e \bar \nu_e$ form factors receive corrections suppressed by powers of the charm quark mass. For small up and down quark massed the leading corrections of order $(1/m_c)^{n+2}~n = 0,1,2,...$ have a nonanalytic dependence on the light ...
[ { "created": "Fri, 7 May 1993 22:15:05 GMT", "version": "v1" } ]
2009-10-22
[ [ "Chow", "Chi-Keung", "" ], [ "Wise", "Mark B.", "" ] ]
Heavy quark symmetry relations for $B\rightarrow De\bar \nu_e$ and $B\rightarrow D^*e \bar \nu_e$ form factors receive corrections suppressed by powers of the charm quark mass. For small up and down quark massed the leading corrections of order $(1/m_c)^{n+2}~n = 0,1,2,...$ have a nonanalytic dependence on the light qu...
hep-ph/9503393
Martin Bucher
Martin Bucher and Neil Turok (Princeton U.)
Open Inflation with Arbitrary False Vacuum Mass
24 pages and 3 figures. (Uses phyzzx macro.)
Phys.Rev. D52 (1995) 5538-5548
10.1103/PhysRevD.52.5538
null
hep-ph astro-ph
null
We calculate the power spectrum of adiabatic density perturbations in an open inflationary model in which inflation occurs in two stages. First an epoch of old inflation creates a large, smooth universe, solving the horizon and homogeneity problems. Then an open universe emerges through the nucleation of a single bub...
[ { "created": "Tue, 21 Mar 1995 04:30:43 GMT", "version": "v1" } ]
2009-10-28
[ [ "Bucher", "Martin", "", "Princeton U." ], [ "Turok", "Neil", "", "Princeton U." ] ]
We calculate the power spectrum of adiabatic density perturbations in an open inflationary model in which inflation occurs in two stages. First an epoch of old inflation creates a large, smooth universe, solving the horizon and homogeneity problems. Then an open universe emerges through the nucleation of a single bubbl...
1906.09470
Jilberto Zamora-Sa\'a
Sebastian Tapia, Jilberto Zamora-Sa\'a
Exploring CP-Violating heavy neutrino oscillations in rare tau decays at Belle II
null
Nucl.Phys. B952 (2020) 114936
10.1016/j.nuclphysb.2020.114936
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this work, we study the lepton number violating tau decays via two intermediate on-shell Majorana neutrinos $N_j$ into two charged pions, and a charged lepton $\tau^{\pm} \to \pi^{\pm} N_j \to \pi^{\pm} \pi^{\pm} \ell^{\mp}$. We consider the scenario where the heavy neutrino masses are within $0.5$ GeV $\leq M_N \...
[ { "created": "Sat, 22 Jun 2019 17:00:07 GMT", "version": "v1" }, { "created": "Tue, 25 Jun 2019 14:43:05 GMT", "version": "v2" }, { "created": "Sat, 25 Jan 2020 11:22:23 GMT", "version": "v3" } ]
2020-03-18
[ [ "Tapia", "Sebastian", "" ], [ "Zamora-Saá", "Jilberto", "" ] ]
In this work, we study the lepton number violating tau decays via two intermediate on-shell Majorana neutrinos $N_j$ into two charged pions, and a charged lepton $\tau^{\pm} \to \pi^{\pm} N_j \to \pi^{\pm} \pi^{\pm} \ell^{\mp}$. We consider the scenario where the heavy neutrino masses are within $0.5$ GeV $\leq M_N \le...
1209.3587
Maxim Chernodub
M. N. Chernodub
Vafa-Witten theorem, vector meson condensates and magnetic-field-induced electromagnetic superconductivity of vacuum
2 pages
Phys.Rev.D86:107703,2012
10.1103/PhysRevD.86.107703
null
hep-ph hep-lat
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We show that the electromagnetic superconductivity of vacuum in strong magnetic field background is consistent with the Vafa-Witten theorem because the charged vector meson condensates lock relevant internal global symmetries of QCD with the electromagnetic gauge group.
[ { "created": "Mon, 17 Sep 2012 08:41:23 GMT", "version": "v1" } ]
2012-11-28
[ [ "Chernodub", "M. N.", "" ] ]
We show that the electromagnetic superconductivity of vacuum in strong magnetic field background is consistent with the Vafa-Witten theorem because the charged vector meson condensates lock relevant internal global symmetries of QCD with the electromagnetic gauge group.
1606.09469
Piotr Lebiedowicz
Piotr Lebiedowicz, Marta Luszczak, Roman Pasechnik and Antoni Szczurek
Interpreting the 750 GeV diphoton signal as technipion
6 pages, 5 figures, 1 table, talk presented by A. Szczurek at DIS2016 conference, 11-15 April 2016, DESY Hamburg, Germany
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We discuss whether the enhancement in the diphoton final state at $M_{\gamma \gamma}$ = 750 GeV, observed recently by the ATLAS and CMS Collaborations could be a neutral pseudoscalar technipion $\tilde{\pi}^0$. We considered two distinct minimal models for the dynamical electroweak symmetry breaking. Here we concentr...
[ { "created": "Thu, 30 Jun 2016 13:03:11 GMT", "version": "v1" } ]
2016-07-01
[ [ "Lebiedowicz", "Piotr", "" ], [ "Luszczak", "Marta", "" ], [ "Pasechnik", "Roman", "" ], [ "Szczurek", "Antoni", "" ] ]
We discuss whether the enhancement in the diphoton final state at $M_{\gamma \gamma}$ = 750 GeV, observed recently by the ATLAS and CMS Collaborations could be a neutral pseudoscalar technipion $\tilde{\pi}^0$. We considered two distinct minimal models for the dynamical electroweak symmetry breaking. Here we concentrat...
hep-ph/9503233
Chun Eung Jin
E.J. Chun and A. Lukas
Axino Mass in Supergravity Models
Latex, 12 pages, no figures
Phys.Lett.B357:43-50,1995
10.1016/0370-2693(95)00881-K
TUM-HEP 215/95, IC/95/29
hep-ph
null
We analyze the mass of the axino, the fermionic superpartner of the axion, in general supergravity models incorporating a Peccei--Quinn--symmetry and determine the cosmological constraints on this mass. In particular, we derive a simple criterion to identify models with an LSP--axino which has a mass of $O(m_{3/2}^2/...
[ { "created": "Sat, 4 Mar 1995 13:49:31 GMT", "version": "v1" } ]
2010-11-01
[ [ "Chun", "E. J.", "" ], [ "Lukas", "A.", "" ] ]
We analyze the mass of the axino, the fermionic superpartner of the axion, in general supergravity models incorporating a Peccei--Quinn--symmetry and determine the cosmological constraints on this mass. In particular, we derive a simple criterion to identify models with an LSP--axino which has a mass of $O(m_{3/2}^2/f_...
1809.08102
Hai-Yang Cheng
Hai-Yang Cheng, Yan-Liang Shi
Lifetimes of Doubly Charmed Baryons
17 pages, 1 figure, version to appear in PRD. arXiv admin note: text overlap with arXiv:1807.00916
Phys. Rev. D 98, 113005 (2018)
10.1103/PhysRevD.98.113005
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The lifetimes of doubly charmed hadrons are analyzed within the framework of the heavy quark expansion (HQE). Lifetime differences arise from spectator effects such as $W$-exchange and Pauli interference. The $\Xi_{cc}^{++}$ baryon is longest-lived in the doubly charmed baryon system owing to the destructive Pauli in...
[ { "created": "Wed, 19 Sep 2018 21:16:33 GMT", "version": "v1" }, { "created": "Tue, 27 Nov 2018 02:41:55 GMT", "version": "v2" } ]
2018-12-19
[ [ "Cheng", "Hai-Yang", "" ], [ "Shi", "Yan-Liang", "" ] ]
The lifetimes of doubly charmed hadrons are analyzed within the framework of the heavy quark expansion (HQE). Lifetime differences arise from spectator effects such as $W$-exchange and Pauli interference. The $\Xi_{cc}^{++}$ baryon is longest-lived in the doubly charmed baryon system owing to the destructive Pauli inte...
0812.3077
Jorn Boomsma
Jorn K. Boomsma, Daniel Boer
Spontaneous CP violation in the NJL model at theta = pi
5 pages, 7 figures; talk given at the 8th Conference "Quark Confinement and the Hadron Spectrum", Mainz, Germany, 1-6 September 2008
Nucl.Phys.A820:251c-254c,2009; PoS Confinement8:134,2008
10.1016/j.nuclphysa.2009.01.062
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
As is well-known, spontaneous CP-violation in the strong interaction is possible at theta = pi, which is commonly referred to as Dashen's phenomenon. This phenomenon has been studied extensively using chiral Lagrangians. Here the two-flavor NJL model at theta = pi is discussed. It turns out that the occurrence of spo...
[ { "created": "Tue, 16 Dec 2008 14:45:06 GMT", "version": "v1" } ]
2009-06-25
[ [ "Boomsma", "Jorn K.", "" ], [ "Boer", "Daniel", "" ] ]
As is well-known, spontaneous CP-violation in the strong interaction is possible at theta = pi, which is commonly referred to as Dashen's phenomenon. This phenomenon has been studied extensively using chiral Lagrangians. Here the two-flavor NJL model at theta = pi is discussed. It turns out that the occurrence of spont...
hep-ph/9708269
Istvan Montvay
I. Montvay
A non-chiral extension of the standard model with mirror fermions
latex, 6 pages, 1 figure with epsfig. Talk given at the workshop "Beyond the Standard Model V", Balholm, Norway, May 1997
null
10.1063/1.54463
DESY 97-153
hep-ph
null
The difficulties of defining chiral gauge theories non-perturbatively suggest a vector-like extension of the standard model with three mirror fermion families. Some phenomenological implications of such an extension are discussed.
[ { "created": "Thu, 7 Aug 1997 08:06:51 GMT", "version": "v1" } ]
2009-10-30
[ [ "Montvay", "I.", "" ] ]
The difficulties of defining chiral gauge theories non-perturbatively suggest a vector-like extension of the standard model with three mirror fermion families. Some phenomenological implications of such an extension are discussed.
hep-ph/9904384
null
V.I. Kopeikin, L.A. Mikaelyan, V.V. Sinev
Search for the Neutrino Magnetic Moment in the Non-Equilibrium Reactor Antineutrino Energy Spectrum
4 pages LaTeX 2.09. 4 PS figures. Resume of seminar talks given at Kurchatov Institute, March 1999 y
Phys.Atom.Nucl. 63 (2000) 1012-1015; Yad.Fiz. 63 (2000) 1087-1090
10.1134/1.855741
null
hep-ph
null
We study the time evolution of the typical nuclear reactor antineutrino energy spectrum during reactor ON period and the decay of the residual antineutrino spectrum after reactor is stopped. We find that relevant variations of the soft recoil electron spectra produced via weak and magnetic ${\widetilde {\nu}}_{e},e$ ...
[ { "created": "Mon, 19 Apr 1999 09:13:02 GMT", "version": "v1" }, { "created": "Wed, 19 May 1999 08:42:59 GMT", "version": "v2" } ]
2009-10-31
[ [ "Kopeikin", "V. I.", "" ], [ "Mikaelyan", "L. A.", "" ], [ "Sinev", "V. V.", "" ] ]
We study the time evolution of the typical nuclear reactor antineutrino energy spectrum during reactor ON period and the decay of the residual antineutrino spectrum after reactor is stopped. We find that relevant variations of the soft recoil electron spectra produced via weak and magnetic ${\widetilde {\nu}}_{e},e$ sc...
1607.00404
Yuri Bonder
Yuri Bonder
The Elusive Part of the Standard-Model Extension Gravitational Sector
Presented at the Seventh Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 20-24, 2016
null
null
null
hep-ph gr-qc
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In the minimal gravitational sector of the Standard-Model Extension, there is a coefficient whose physical consequences are unknown, and the reason behind this lack of effects is still puzzling. This contribution summarizes several studies where the goal was to find a fundamental explanation of this puzzle. So far, n...
[ { "created": "Fri, 1 Jul 2016 20:46:18 GMT", "version": "v1" }, { "created": "Mon, 1 Aug 2016 20:06:47 GMT", "version": "v2" } ]
2016-08-03
[ [ "Bonder", "Yuri", "" ] ]
In the minimal gravitational sector of the Standard-Model Extension, there is a coefficient whose physical consequences are unknown, and the reason behind this lack of effects is still puzzling. This contribution summarizes several studies where the goal was to find a fundamental explanation of this puzzle. So far, no ...
hep-ph/0309226
Stefan Groote
S. Groote, J.G. K\"orner, J. Maul
QCD improved determination of the hadronic contribution to the anomalous magnetic moment of the muon
17 pages in LaTeX, including 4 Postscript figures
null
null
MZ-TH/03-14
hep-ph
null
We present the results of a new evaluation of the anomalous magnetic moment a_mu=(g_mu-2)/2 of the muon where the role of input data needed in the evaluation is lowered in the interval between 1.2 and 3.0 GeV below charm threshold. This is achieved by decreasing the size of the weight function in the dispersion integ...
[ { "created": "Fri, 19 Sep 2003 06:02:09 GMT", "version": "v1" } ]
2007-05-23
[ [ "Groote", "S.", "" ], [ "Körner", "J. G.", "" ], [ "Maul", "J.", "" ] ]
We present the results of a new evaluation of the anomalous magnetic moment a_mu=(g_mu-2)/2 of the muon where the role of input data needed in the evaluation is lowered in the interval between 1.2 and 3.0 GeV below charm threshold. This is achieved by decreasing the size of the weight function in the dispersion integra...
hep-ph/0501111
Marcello Lissia
Gianni Fiorentini, Marcello Lissia, Fabio Mantovani, Riccardo Vannucci
How much Uranium is in the Earth? Predictions for geo-neutrinos at KamLAND
25 pages, 5 figures; minor changes in reply to referees' comments and APS style requirements, version to appear in PRD. In particular, one less figure, Table III and Table IV have been exchanged and last figure is now first to be referenced in order, note added in proofs on recent KamLAND results
Phys.Rev.D72:033017,2005
10.1103/PhysRevD.72.033017
null
hep-ph astro-ph hep-ex nucl-ex physics.geo-ph
null
Geo-neutrino detection can determine the amount of long-lived radioactive elements within our planet, thus providing a direct test of the Bulk Silicate Earth (BSE) model and fixing the radiogenic contribution to the terrestrial heat. We present a prediction for the geo-neutrino signal at KamLAND as a function of the ...
[ { "created": "Thu, 13 Jan 2005 18:56:30 GMT", "version": "v1" }, { "created": "Thu, 4 Aug 2005 16:56:06 GMT", "version": "v2" } ]
2011-01-04
[ [ "Fiorentini", "Gianni", "" ], [ "Lissia", "Marcello", "" ], [ "Mantovani", "Fabio", "" ], [ "Vannucci", "Riccardo", "" ] ]
Geo-neutrino detection can determine the amount of long-lived radioactive elements within our planet, thus providing a direct test of the Bulk Silicate Earth (BSE) model and fixing the radiogenic contribution to the terrestrial heat. We present a prediction for the geo-neutrino signal at KamLAND as a function of the Ur...
0909.4236
Matt Braby
Matt Braby, Jingyi Chao, Thomas Schaefer
Thermal conductivity of color-flavor locked quark matter
20 pages, 4 figures - Changed small numerical error and added some comments based on discussions; conclusions unchanged
Phys.Rev.C81:045205,2010
10.1103/PhysRevC.81.045205
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We compute the thermal conductivity of color-flavor locked (CFL) quark matter. At temperatures below the scale set by the gap in the quark spectrum, transport properties are determined by collective modes. In this work we focus on the contribution from the lightest modes, the superfluid phonon and the massive neutral...
[ { "created": "Wed, 23 Sep 2009 16:33:59 GMT", "version": "v1" }, { "created": "Fri, 4 Dec 2009 19:20:25 GMT", "version": "v2" } ]
2010-04-29
[ [ "Braby", "Matt", "" ], [ "Chao", "Jingyi", "" ], [ "Schaefer", "Thomas", "" ] ]
We compute the thermal conductivity of color-flavor locked (CFL) quark matter. At temperatures below the scale set by the gap in the quark spectrum, transport properties are determined by collective modes. In this work we focus on the contribution from the lightest modes, the superfluid phonon and the massive neutral k...
1208.4558
Diego Aristizabal
D. Aristizabal Sierra
Lepton flavor violation and seesaw symmetries
7 pages, 2 figures. Prepared for the proceedings of the 5th International Symposium on Symmetries in Subatomic Physics, SSP2012, Groningen, The Netherlands, June 18-22 2012
null
10.1007/s10751-013-0772-2
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
When the standard model is extended with right-handed neutrinos the symmetries of the resulting Lagrangian are enlarged with a new global U(1)R Abelian factor. In the context of minimal seesaw models we analyze the implications of a slightly broken U(1)R symmetry on charged lepton flavor violating decays. We find, de...
[ { "created": "Wed, 22 Aug 2012 17:03:32 GMT", "version": "v1" } ]
2015-06-11
[ [ "Sierra", "D. Aristizabal", "" ] ]
When the standard model is extended with right-handed neutrinos the symmetries of the resulting Lagrangian are enlarged with a new global U(1)R Abelian factor. In the context of minimal seesaw models we analyze the implications of a slightly broken U(1)R symmetry on charged lepton flavor violating decays. We find, depe...
2209.13804
Mikko Laine
M. Laine, L. Niemi, S. Procacci, K. Rummukainen
Shape of the hot topological charge density spectral function
24 pages. v2: clarifications added, published version
JHEP 11 (2022) 126
10.1007/JHEP11(2022)126
null
hep-ph hep-lat
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
After motivating an interest in the shape of the topological charge density spectral function in hot Yang-Mills theories, we estimate it with the help of thermally averaged classical real-time simulations, for $N_{\rm c} = 2,3$. After subtracting a perturbative contribution at large frequencies, we observe a non-triv...
[ { "created": "Wed, 28 Sep 2022 03:15:13 GMT", "version": "v1" }, { "created": "Tue, 22 Nov 2022 05:04:47 GMT", "version": "v2" } ]
2022-11-23
[ [ "Laine", "M.", "" ], [ "Niemi", "L.", "" ], [ "Procacci", "S.", "" ], [ "Rummukainen", "K.", "" ] ]
After motivating an interest in the shape of the topological charge density spectral function in hot Yang-Mills theories, we estimate it with the help of thermally averaged classical real-time simulations, for $N_{\rm c} = 2,3$. After subtracting a perturbative contribution at large frequencies, we observe a non-trivia...
hep-ph/0210412
Adrian Dumitru
A. Dumitru (BNL)
High-multiplicity pA collisions and the small-x effective action
6 Pages, 3 Figures; Presented at the Workshop on Coherent Effects at RHIC and LHC: Initial Conditions and Hard Probes'', ECT*, Trento (Italy), October 14-25, 2002, http://pluto.mpi-hd.mpg.de/trento
null
null
null
hep-ph
null
I discuss the p_t distributions for high-multiplicity events originating from semi-classical variation of the gluon density of the proton.The multiplicity distribution measures the curvature of the effective action for the small-x gluon fields. For pA collisions at the RHIC and LHC colliders, semi-classically the mul...
[ { "created": "Tue, 29 Oct 2002 20:36:43 GMT", "version": "v1" } ]
2007-05-23
[ [ "Dumitru", "A.", "", "BNL" ] ]
I discuss the p_t distributions for high-multiplicity events originating from semi-classical variation of the gluon density of the proton.The multiplicity distribution measures the curvature of the effective action for the small-x gluon fields. For pA collisions at the RHIC and LHC colliders, semi-classically the multi...
2203.03882
Quzhi Li
Qu-Zhi Li
The $N/D$ study on the singularity structure of $\pi N$ scattering amplitudes
null
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The $N/D$ method is used to study the $S_{11}$ channel low energy $\pi N$ scattering amplitude. The input of left cuts are obtained from various phenomenological models. With the aid of the production representation, the total phase shifts can be decomposed into different contributions, and it further reveals that th...
[ { "created": "Tue, 8 Mar 2022 06:58:18 GMT", "version": "v1" } ]
2022-03-09
[ [ "Li", "Qu-Zhi", "" ] ]
The $N/D$ method is used to study the $S_{11}$ channel low energy $\pi N$ scattering amplitude. The input of left cuts are obtained from various phenomenological models. With the aid of the production representation, the total phase shifts can be decomposed into different contributions, and it further reveals that the ...
1205.0407
Chaehyun Yu
P. Ko, Yuji Omura, Chaehyun Yu (KIAS)
Top A_FB at the Tevatron vs. charge asymmetry at the LHC in chiral U(1) flavor models with flavored Higgs doublets
11 pages, 6 figures, figures and discussion added
null
10.1140/epjc/s10052-012-2269-6
KIAS-PREPRINT-P12024
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider the top forward-backward (FB) asymmetry at the Tevatron and top charge asymmetry at the LHC within chiral U(1)^\prime models with flavor-dependent U(1)^\prime charges and flavored Higgs fields, which were introduced in the ref. [65]. The models could enhance not only the top forward-backward asymmetry at ...
[ { "created": "Wed, 2 May 2012 12:38:54 GMT", "version": "v1" }, { "created": "Wed, 26 Sep 2012 20:12:00 GMT", "version": "v2" } ]
2015-06-05
[ [ "Ko", "P.", "", "KIAS" ], [ "Omura", "Yuji", "", "KIAS" ], [ "Yu", "Chaehyun", "", "KIAS" ] ]
We consider the top forward-backward (FB) asymmetry at the Tevatron and top charge asymmetry at the LHC within chiral U(1)^\prime models with flavor-dependent U(1)^\prime charges and flavored Higgs fields, which were introduced in the ref. [65]. The models could enhance not only the top forward-backward asymmetry at Te...
2310.03711
Hoernisa Iminniyaz
Qiu Sujuan, Hoernisa Iminniyaz
Relic density of asymmetric dark matter and constraints on the parameter spaces
null
null
null
null
hep-ph
http://creativecommons.org/licenses/by-nc-sa/4.0/
Based on the cosmological observations, the baryon and dark matter energy densities are similar. There may exist an asymmetry between the dark matter particles and their corresponding anti--particles. We review the relic density of asymmetric dark matter particle and anti--particle in the standard cosmological scenar...
[ { "created": "Thu, 5 Oct 2023 17:36:34 GMT", "version": "v1" } ]
2023-10-06
[ [ "Sujuan", "Qiu", "" ], [ "Iminniyaz", "Hoernisa", "" ] ]
Based on the cosmological observations, the baryon and dark matter energy densities are similar. There may exist an asymmetry between the dark matter particles and their corresponding anti--particles. We review the relic density of asymmetric dark matter particle and anti--particle in the standard cosmological scenario...
hep-ph/9606241
Ewan Davidson Stewart
Ewan D. Stewart
Flattening the Inflaton's Potential with Quantum Corrections
8 pages, LaTeX
Phys.Lett. B391 (1997) 34-38
10.1016/S0370-2693(96)01458-X
RESCEU-19/96
hep-ph astro-ph hep-th
null
I show that a classical scalar potential with $ V''/V \sim 1 $ can be sufficiently flattened by quantum corrections to give rise to slow-roll inflation. This provides perhaps the simplest way to generate an inflationary potential without fine tuning. The most natural implementation of this idea produces an unviably s...
[ { "created": "Wed, 5 Jun 1996 14:39:08 GMT", "version": "v1" } ]
2009-10-28
[ [ "Stewart", "Ewan D.", "" ] ]
I show that a classical scalar potential with $ V''/V \sim 1 $ can be sufficiently flattened by quantum corrections to give rise to slow-roll inflation. This provides perhaps the simplest way to generate an inflationary potential without fine tuning. The most natural implementation of this idea produces an unviably sma...
hep-ph/0111454
Ismd31
S. Munier
Dipole-proton $S$-matrix derived from diffractive meson electroproduction
4 pages, 1 figure (in eps) talk given at XXXI International Symposium on Multiparticle Dynamics, Sep. 1-7, 2001, Datong China URL http://ismd31.ccnu.edu.cn/
null
10.1142/9789812778048_0074
null
hep-ph
null
Through a determination of the $S$-matrix element for the scattering of a localized colour dipole on a proton, we show that saturation effects can already be sizable at HERA. The saturation scale is found to be around 1-1.5 $GeV^2$ for the highest available energies and for central collisions, and is a decreasing fun...
[ { "created": "Fri, 30 Nov 2001 10:01:30 GMT", "version": "v1" } ]
2017-08-23
[ [ "Munier", "S.", "" ] ]
Through a determination of the $S$-matrix element for the scattering of a localized colour dipole on a proton, we show that saturation effects can already be sizable at HERA. The saturation scale is found to be around 1-1.5 $GeV^2$ for the highest available energies and for central collisions, and is a decreasing funct...
hep-ph/9709328
Claude Bernard
C. Bernard, T. Blum, T. DeGrand, C. DeTar, Steven Gottlieb, U. M. Heller, J. Hetrick, C. McNeile, K. Rummukainen, R. Sugar, D. Toussaint, and M. Wingate
B Mixing on the Lattice: $f_B$, $f_{B_s}$ and Related Quantities
9 pages, 3 included postscript figures, uses aipproc.sty and epsfig. Invited talk presented by C. Bernard at "b20: Twenty Beautiful Years of Bottom Physics," Illinois Institute of Technology, June 29-July 2, 1997
null
10.1063/1.55130
null
hep-ph hep-lat
null
The MILC collaboration computation of heavy-light decay constants is described. Results for $f_B$, $f_{B_s}$, $f_D$, $f_{D_s}$ and their ratios are presented. These results are still preliminary, but the analysis is close to being completed. Sources of systematic error, both within the quenched approximation and from...
[ { "created": "Fri, 12 Sep 1997 14:45:57 GMT", "version": "v1" } ]
2009-10-30
[ [ "Bernard", "C.", "" ], [ "Blum", "T.", "" ], [ "DeGrand", "T.", "" ], [ "DeTar", "C.", "" ], [ "Gottlieb", "Steven", "" ], [ "Heller", "U. M.", "" ], [ "Hetrick", "J.", "" ], [ "McNeile", "C.", ...
The MILC collaboration computation of heavy-light decay constants is described. Results for $f_B$, $f_{B_s}$, $f_D$, $f_{D_s}$ and their ratios are presented. These results are still preliminary, but the analysis is close to being completed. Sources of systematic error, both within the quenched approximation and from q...
hep-ph/9807356
Ananthanarayan Balasubramanian
B. Ananthanarayan (Centre for Theoretical Studies, Indian Institute of Science, Bangalore, India)
Effective Lagrangians in $2 + \epsilon$ Dimensions
13 pages plain LaTeX, to be run twice. Replaced with expanded and corrected version. One footnote added
Phys.Rev. D61 (2000) 076001
10.1103/PhysRevD.61.076001
IISc-CTS-6/98
hep-ph cond-mat hep-th
null
The failure of the the loop expansion and effective lagrangians in two dimensions, which traditionally hinges on a power counting argument is considered. We establish that the book keeping device for the loop expansion, a role played by (the reciprocal of) the pion-decay constant itself vanishes for $d=2$, thereby go...
[ { "created": "Mon, 13 Jul 1998 12:50:11 GMT", "version": "v1" }, { "created": "Thu, 3 Jun 1999 05:22:08 GMT", "version": "v2" }, { "created": "Wed, 9 Jun 1999 04:04:47 GMT", "version": "v3" } ]
2009-10-31
[ [ "Ananthanarayan", "B.", "", "Centre for Theoretical Studies, Indian Institute of\n Science, Bangalore, India" ] ]
The failure of the the loop expansion and effective lagrangians in two dimensions, which traditionally hinges on a power counting argument is considered. We establish that the book keeping device for the loop expansion, a role played by (the reciprocal of) the pion-decay constant itself vanishes for $d=2$, thereby goin...
hep-ph/0404178
Don Colladay
Don Colladay
New Implications of Lorentz Violation
8 pages, proceedings for 2003 Coral Gables Conference, Ft. Lauderdale, FL
Int.J.Mod.Phys. A20 (2005) 1260-1267
10.1142/S0217751X05024158
null
hep-ph
null
In this proceedings, I summarize two recently discovered theoretical implications that Lorentz violation has on physical systems. First, I discuss new models for neutrino oscillations in which relatively simple combinations of Lorentz-violating parameters can mimic the major features of the current neutrino oscillati...
[ { "created": "Wed, 21 Apr 2004 15:00:42 GMT", "version": "v1" } ]
2009-11-10
[ [ "Colladay", "Don", "" ] ]
In this proceedings, I summarize two recently discovered theoretical implications that Lorentz violation has on physical systems. First, I discuss new models for neutrino oscillations in which relatively simple combinations of Lorentz-violating parameters can mimic the major features of the current neutrino oscillation...
1008.3141
Ayan Paul
Ayan Paul, Ikaros I. Bigi, Stefan Recksiegel
D^0 -> gamma gamma and D^0 -> mu^+ mu^- Rates on an Unlikely Impact of the Littlest Higgs Model with T-Parity
18 pages, 6 figures. V4 has minor typos corrected and Sec.5 has been extended to contain comments on FCNCs in different UV completion scenarios of LHT. V5 includes corrected Eq.9 as per erratum submitted to PRD
Phys.Rev.D82:094006,2010
10.1103/PhysRevD.82.094006
UND-HEP-10-BIG, TUM-HEP-767/10
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The decays D^0 -> gamma gamma, $mu^+ mu^- are highly suppressed in the Standard Model (SM) with the lion's share of the rate coming from long distance dynamics; D^0 -> mu^+ mu^- is driven predominantly by D^0 -> gamma gamma -> mu^+ mu^-. Their present experimental bounds are small, yet much larger than SM predictions...
[ { "created": "Wed, 18 Aug 2010 17:50:15 GMT", "version": "v1" }, { "created": "Thu, 19 Aug 2010 02:17:43 GMT", "version": "v2" }, { "created": "Tue, 24 Aug 2010 04:49:50 GMT", "version": "v3" }, { "created": "Mon, 15 Nov 2010 02:26:37 GMT", "version": "v4" }, { "c...
2011-01-04
[ [ "Paul", "Ayan", "" ], [ "Bigi", "Ikaros I.", "" ], [ "Recksiegel", "Stefan", "" ] ]
The decays D^0 -> gamma gamma, $mu^+ mu^- are highly suppressed in the Standard Model (SM) with the lion's share of the rate coming from long distance dynamics; D^0 -> mu^+ mu^- is driven predominantly by D^0 -> gamma gamma -> mu^+ mu^-. Their present experimental bounds are small, yet much larger than SM predictions. ...
hep-ph/0201051
Helmut Satz
H. Satz (U. of Bielefeld)
States of Strongly Interacting Matter
13 pages, 12 figures
Fortsch.Phys. 50 (2002) 541-551; Lect.Notes Phys. 616 (2003) 126-137
null
BI-TP 2002/01
hep-ph
null
I discuss the phase structure of strongly interacting matter at high temperatures and densities, as predicted by statistical QCD, and consider in particular the nature of the transition of hot hadronic matter to a plasma of deconfined quarks and gluons.
[ { "created": "Tue, 8 Jan 2002 16:30:31 GMT", "version": "v1" } ]
2007-05-23
[ [ "Satz", "H.", "", "U. of Bielefeld" ] ]
I discuss the phase structure of strongly interacting matter at high temperatures and densities, as predicted by statistical QCD, and consider in particular the nature of the transition of hot hadronic matter to a plasma of deconfined quarks and gluons.
hep-ph/0606105
Gian Francesco Giudice
G.F. Giudice, R. Rattazzi
Living Dangerously with Low-Energy Supersymmetry
37 pages, 5 figures
Nucl.Phys. B757 (2006) 19-46
10.1016/j.nuclphysb.2006.07.031
CERN-PH-TH/2006-105
hep-ph
null
We stress that the lack of direct evidence for supersymmetry forces the soft mass parameters to lie very close to the critical line separating the broken and unbroken phases of the electroweak gauge symmetry. We argue that the level of criticality, or fine-tuning, that is needed to escape the present collider bounds ...
[ { "created": "Fri, 9 Jun 2006 08:41:05 GMT", "version": "v1" } ]
2009-11-11
[ [ "Giudice", "G. F.", "" ], [ "Rattazzi", "R.", "" ] ]
We stress that the lack of direct evidence for supersymmetry forces the soft mass parameters to lie very close to the critical line separating the broken and unbroken phases of the electroweak gauge symmetry. We argue that the level of criticality, or fine-tuning, that is needed to escape the present collider bounds ca...
1305.5432
Denis Rosenthal
Patrick Gelhausen, Alexander Khodjamirian, Alexei A. Pivovarov, Denis Rosenthal
Decay constants of heavy-light vector mesons from QCD sum rules
30 pages, v3: Uncertainties of the ratios of decay constants corrected. Central values and all other results not changed. , v2: Normalization factor in eq.(53) corrected, causing a slight decrease of the recalculated numerical values for f_B^*_s and f_D^*_s; some misprints corrected; version published in journa...
null
10.1103/PhysRevD.88.014015
SI-HEP-2013-02, QFET-2013-01
hep-ph hep-lat
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We revisit QCD sum rules for the decay constants of heavy-light mesons. In the sum rules for the vector mesons B^*_(s) and D^*_(s) we improve the accuracy of OPE, taking into account the O(alpha_s^2) terms in the perturbative part and calculating the O(alpha_s) corrections to the quark-condensate contribution. With t...
[ { "created": "Thu, 23 May 2013 14:20:56 GMT", "version": "v1" }, { "created": "Fri, 11 Apr 2014 13:20:33 GMT", "version": "v2" }, { "created": "Fri, 27 Mar 2015 17:56:05 GMT", "version": "v3" } ]
2015-03-30
[ [ "Gelhausen", "Patrick", "" ], [ "Khodjamirian", "Alexander", "" ], [ "Pivovarov", "Alexei A.", "" ], [ "Rosenthal", "Denis", "" ] ]
We revisit QCD sum rules for the decay constants of heavy-light mesons. In the sum rules for the vector mesons B^*_(s) and D^*_(s) we improve the accuracy of OPE, taking into account the O(alpha_s^2) terms in the perturbative part and calculating the O(alpha_s) corrections to the quark-condensate contribution. With thi...
hep-ph/0005205
Andrei Ivanov
A. Ya. Berdnikov, Ya. A. Berdnikov, A. N. Ivanov, V. A. Ivanova, V. F. Kosmach, V. M. Samsonov, and N.I. Troitskaya
On the hadron production from the quark-gluon plasma phase in ultra-relativistic heavy-ion collisions
17 pages, no figers, Latex
Fizika B12:235-256,2003
null
null
hep-ph
null
We describe the quark gluon plasma (QGP) as a thermalized quark-gluon system, the thermalized QGP phase of QCD. The hadronization of the thermalized QGP phase is given in a way resembling a coalescence model with correlated quarks and anti-quarks. The input parameters of the approach are the spatial volumes of the ha...
[ { "created": "Sat, 20 May 2000 18:38:37 GMT", "version": "v1" }, { "created": "Thu, 9 Nov 2000 17:20:44 GMT", "version": "v2" } ]
2014-11-17
[ [ "Berdnikov", "A. Ya.", "" ], [ "Berdnikov", "Ya. A.", "" ], [ "Ivanov", "A. N.", "" ], [ "Ivanova", "V. A.", "" ], [ "Kosmach", "V. F.", "" ], [ "Samsonov", "V. M.", "" ], [ "Troitskaya", "N. I.", "" ] ]
We describe the quark gluon plasma (QGP) as a thermalized quark-gluon system, the thermalized QGP phase of QCD. The hadronization of the thermalized QGP phase is given in a way resembling a coalescence model with correlated quarks and anti-quarks. The input parameters of the approach are the spatial volumes of the hadr...
0903.4985
Alexander S. Sakharov
Alexander Sakharov, Nick Mavromatos, Anselmo Meregaglia, Andre Rubbia, Sarben Sarkar
Exploration of Possible Quantum Gravity Effects with Neutrinos I: Decoherence in Neutrino Oscillations Experiments
9 pages, 4 figures, proceedings for invited talk by A.Sakharov at DISCRETE'08, Valencia, Spain; December 2008
J.Phys.Conf.Ser.171:012038,2009
10.1088/1742-6596/171/1/012038
CERN-TH-PH/2009-033
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Quantum gravity may involve models with stochastic fluctuations of the associated metric field, around some fixed background value. Such stochastic models of gravity may induce decoherence for matter propagating in such fluctuating space time. In most cases, this leads to fewer neutrinos of all active flavours being ...
[ { "created": "Sun, 29 Mar 2009 20:53:16 GMT", "version": "v1" } ]
2009-07-22
[ [ "Sakharov", "Alexander", "" ], [ "Mavromatos", "Nick", "" ], [ "Meregaglia", "Anselmo", "" ], [ "Rubbia", "Andre", "" ], [ "Sarkar", "Sarben", "" ] ]
Quantum gravity may involve models with stochastic fluctuations of the associated metric field, around some fixed background value. Such stochastic models of gravity may induce decoherence for matter propagating in such fluctuating space time. In most cases, this leads to fewer neutrinos of all active flavours being de...
2110.15647
Sara Taheri Monfared
S. Taheri Monfared and H. Jung
Transverse Momentum Dependent and collinear densities based on Parton Branching method
Proceedings of ISMD 2021, July 12-16 (online conference). 5 pages
null
null
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
We review the current status of collinear and Transverse Momentum Dependent densities based on the Parton Branching method. We investigate the performance of the PB-TMD evolution as well as PB-TMD parton shower with different configurations of the hard process in the four- and five-flavour schemes.
[ { "created": "Fri, 29 Oct 2021 09:41:51 GMT", "version": "v1" } ]
2021-11-01
[ [ "Monfared", "S. Taheri", "" ], [ "Jung", "H.", "" ] ]
We review the current status of collinear and Transverse Momentum Dependent densities based on the Parton Branching method. We investigate the performance of the PB-TMD evolution as well as PB-TMD parton shower with different configurations of the hard process in the four- and five-flavour schemes.
hep-ph/0304199
Michael Chanowitz
Michael S. Chanowitz
The Direct Limit on the Higgs Mass and the SM Fit
12 pages, 4 figures, presented at the Workshop on Electroweak Precision Data and the Higgs Mass, DESY-Zeuthen, February 28 - March 1, 2003; typos in table 3 corrected, discussion of products of CL's generalized; kinder, gentler abstract
null
null
LBNL-52452
hep-ph
null
Because of two $3\sigma$ anomalies, the Standard Model (SM) fit of the precision electroweak data has a poor confidence level, $CL= 0.02$. Since both anomalies involve challenging systematic issues, it might appear that the SM could still be valid if the anomalies resulted from underestimated systematic error. Indeed...
[ { "created": "Mon, 21 Apr 2003 16:32:06 GMT", "version": "v1" }, { "created": "Tue, 20 May 2003 16:17:36 GMT", "version": "v2" } ]
2007-05-23
[ [ "Chanowitz", "Michael S.", "" ] ]
Because of two $3\sigma$ anomalies, the Standard Model (SM) fit of the precision electroweak data has a poor confidence level, $CL= 0.02$. Since both anomalies involve challenging systematic issues, it might appear that the SM could still be valid if the anomalies resulted from underestimated systematic error. Indeed t...
hep-ph/0302186
Alexander Gemintern
Alexander Gemintern, Shaouly Bar-Shalom, Gad Eilam and Frank Krauss
Lepton-flavor-violating decays L->l gamma gamma as a new probe of supersymmetry with broken R-parity
null
Phys.Rev. D67 (2003) 115012
10.1103/PhysRevD.67.115012
CERN-TH/2003-034
hep-ph
null
Lepton-flavor-violating decays of the type L->l gamma gamma (mu->e gamma gamma, tau->e gamma gamma, and tau->mu gamma gamma) are proposed as new probes of R-parity-violating supersymmetry. Non-penguin diagrams with a sneutrino that decays into two photons via a triangle graph might trigger such decays even in the abs...
[ { "created": "Thu, 20 Feb 2003 15:18:46 GMT", "version": "v1" } ]
2009-11-10
[ [ "Gemintern", "Alexander", "" ], [ "Bar-Shalom", "Shaouly", "" ], [ "Eilam", "Gad", "" ], [ "Krauss", "Frank", "" ] ]
Lepton-flavor-violating decays of the type L->l gamma gamma (mu->e gamma gamma, tau->e gamma gamma, and tau->mu gamma gamma) are proposed as new probes of R-parity-violating supersymmetry. Non-penguin diagrams with a sneutrino that decays into two photons via a triangle graph might trigger such decays even in the absen...
0709.1638
Riccardo Catena
Riccardo Catena
Cosmological implications of a supersymmetric extension of the Brans-Dicke theory
4 pages. To appear in the proceedings of PASCOS-07: 13th International Symposium on Particles, Strings and Cosmology
AIPConf.Proc.957:371-374,2007
10.1063/1.2823804
DESY 07 - 143
hep-ph
null
In the Brans-Dicke theory the Planck mass is replaced by a dynamical scalar field. We consider here the supersymmetric analogous of this mechanism replacing in the supergravity Lagrangian the Planck mass with a chiral superfield. This analysis is motivated by the research of possible connections between supersymmetri...
[ { "created": "Tue, 11 Sep 2007 14:47:07 GMT", "version": "v1" } ]
2008-11-26
[ [ "Catena", "Riccardo", "" ] ]
In the Brans-Dicke theory the Planck mass is replaced by a dynamical scalar field. We consider here the supersymmetric analogous of this mechanism replacing in the supergravity Lagrangian the Planck mass with a chiral superfield. This analysis is motivated by the research of possible connections between supersymmetric ...
2005.05852
Paul Caucal
P. Caucal, E. Iancu, A. H. Mueller, G. Soyez
Nuclear modification factors for jet fragmentation
37 pages, 11 figures, to appear in JHEP
null
10.1007/JHEP10(2020)204
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Using a recently-developed perturbative-QCD approach for jet evolution in a dense quark-gluon plasma, we study the nuclear modification factor for the jet fragmentation function. The qualitative behaviour that we find is in agreement with the respective experimental observations in Pb+Pb collisions at the LHC: a pron...
[ { "created": "Tue, 12 May 2020 15:17:43 GMT", "version": "v1" }, { "created": "Fri, 9 Oct 2020 15:03:46 GMT", "version": "v2" } ]
2020-12-02
[ [ "Caucal", "P.", "" ], [ "Iancu", "E.", "" ], [ "Mueller", "A. H.", "" ], [ "Soyez", "G.", "" ] ]
Using a recently-developed perturbative-QCD approach for jet evolution in a dense quark-gluon plasma, we study the nuclear modification factor for the jet fragmentation function. The qualitative behaviour that we find is in agreement with the respective experimental observations in Pb+Pb collisions at the LHC: a pronou...
0911.3977
Rohit Dhir
Neelesh Sharma, Rohit Dhir and R.C. Verma
Branching ratios of Bc Meson Decaying to Pseudoscalar and Axial-Vector Mesons
19 pages,7 tables
J.Phys.G37:075013,2010
10.1088/0954-3899/37/7/075013
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study Cabibbo-Kobayashi-Maskawa (CKM) favored weak decays of Bc mesons in the Isgur-Scora-Grinstein-Wise (ISGW) quark model. We present a detailed analysis of the Bc meson decaying to a pseudoscalar meson (P) and an axial-vector meson (A). We also give the form factors involving transition in the ISGW II framework...
[ { "created": "Fri, 20 Nov 2009 06:57:58 GMT", "version": "v1" } ]
2014-11-20
[ [ "Sharma", "Neelesh", "" ], [ "Dhir", "Rohit", "" ], [ "Verma", "R. C.", "" ] ]
We study Cabibbo-Kobayashi-Maskawa (CKM) favored weak decays of Bc mesons in the Isgur-Scora-Grinstein-Wise (ISGW) quark model. We present a detailed analysis of the Bc meson decaying to a pseudoscalar meson (P) and an axial-vector meson (A). We also give the form factors involving transition in the ISGW II framework a...
hep-ph/0409090
Gert Aarts
Gert Aarts and Jose M. Martinez Resco (Ohio State)
Transport coefficients and the 2PI effective action in the large N limit
10 pages, based on presentations at Strong and Electroweak Matter (SEWM04), Helsinki, Finland, June 16-19 2004, and the Workshop on QCD in Extreme Environments, Argonne National Laboratory, USA, June 29-July 3 2004
null
10.1142/9789812702159_0030
null
hep-ph nucl-th
null
We discuss the computation of transport coefficients in large N_f QCD and the O(N) model for massive particles. The calculation is organized using the 1/N expansion of the 2PI effective action to next-to-leading order. For the gauge theory, we verify gauge fixing independence and consistency with the Ward identity. I...
[ { "created": "Wed, 8 Sep 2004 13:53:43 GMT", "version": "v1" } ]
2017-08-23
[ [ "Aarts", "Gert", "", "Ohio State" ], [ "Resco", "Jose M. Martinez", "", "Ohio State" ] ]
We discuss the computation of transport coefficients in large N_f QCD and the O(N) model for massive particles. The calculation is organized using the 1/N expansion of the 2PI effective action to next-to-leading order. For the gauge theory, we verify gauge fixing independence and consistency with the Ward identity. In ...
hep-ph/9503321
Alexander Khodjamirian
A. Khodjamirian and R. R\"uckl
Heavy Meson Exclusive Decays in the Framework of QCD Sum Rules
11 pages, Latex, 3 figures added as uuencoded .ps file, presented by R. R\"uckl at the 138.WE-Heraeus-Seminar on Heavy Quark Physics, Bad Honnef, Germany, December 14-16,1994
null
null
MPI-PhT/95-19, LMU 05/95
hep-ph
null
We discuss applications of QCD sum rules on the light-cone to the form factors of the exclusive transitions $B \rightarrow \pi$ and $D\rightarrow \pi$, and to the $B^*B \pi$ and $D^*D \pi$ coupling constants. In the light of our results we examine the pole dominance model for these form factors. A first estimate is g...
[ { "created": "Tue, 14 Mar 1995 10:28:18 GMT", "version": "v1" } ]
2016-09-01
[ [ "Khodjamirian", "A.", "" ], [ "Rückl", "R.", "" ] ]
We discuss applications of QCD sum rules on the light-cone to the form factors of the exclusive transitions $B \rightarrow \pi$ and $D\rightarrow \pi$, and to the $B^*B \pi$ and $D^*D \pi$ coupling constants. In the light of our results we examine the pole dominance model for these form factors. A first estimate is giv...
hep-ph/0402258
Andrea Romanino
Andrea Romanino
Charged lepton contributions to the solar neutrino mixing and theta_13
10 pages, 1 figure
Phys.Rev. D70 (2004) 013003
10.1103/PhysRevD.70.013003
null
hep-ph
null
A charged lepton contribution to the solar neutrino mixing induces a contribution to theta_13, barring cancellations/correlations, which is independent of the model building options in the neutrino sector. We illustrate two robust arguments for that contribution to be within the expected sensitivity of high intensity...
[ { "created": "Tue, 24 Feb 2004 20:50:49 GMT", "version": "v1" }, { "created": "Wed, 3 Mar 2004 18:45:19 GMT", "version": "v2" } ]
2009-11-10
[ [ "Romanino", "Andrea", "" ] ]
A charged lepton contribution to the solar neutrino mixing induces a contribution to theta_13, barring cancellations/correlations, which is independent of the model building options in the neutrino sector. We illustrate two robust arguments for that contribution to be within the expected sensitivity of high intensity n...
2004.10570
Shun Zhou
Shun Zhou
Continuous and Discrete Symmetries of Renormalization Group Equations for Neutrino Oscillations in Matter
24 pages, no figures, typos corrected, more discussions added, to be published in J. Phys. G
J. Phys. G 49 (2022) 025004
10.1088/1361-6471/ac430d
null
hep-ph math-ph math.MP
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Three-flavor neutrino oscillations in matter can be described by three effective neutrino masses $\widetilde{m}^{}_i$ (for $i = 1, 2, 3$) and the effective mixing matrix $V^{}_{\alpha i}$ (for $\alpha = e, \mu, \tau$ and $i = 1, 2, 3$). When the matter parameter $a \equiv 2\sqrt{2} G^{}_{\rm F} N^{}_e E$ is taken as ...
[ { "created": "Wed, 22 Apr 2020 13:45:48 GMT", "version": "v1" }, { "created": "Tue, 14 Dec 2021 14:34:45 GMT", "version": "v2" } ]
2022-01-06
[ [ "Zhou", "Shun", "" ] ]
Three-flavor neutrino oscillations in matter can be described by three effective neutrino masses $\widetilde{m}^{}_i$ (for $i = 1, 2, 3$) and the effective mixing matrix $V^{}_{\alpha i}$ (for $\alpha = e, \mu, \tau$ and $i = 1, 2, 3$). When the matter parameter $a \equiv 2\sqrt{2} G^{}_{\rm F} N^{}_e E$ is taken as an...
1206.5481
Hanqing Zheng
L. Y. Dai, X. G. Wang, H. Q. Zheng
Pole Analysis of Unitarized One Loop $\chi$PT Amplitudes - A Triple Channel Study
Accepted for publication by Communications in Theoretical Physics
null
10.1088/0253-6102/58/3/15
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In a previous paper (Commun. Theor. Phys. 57 (2012) 841), we proposed a method to distinguish poles of different dynamical origin, in a unitarized amplitude of $\pi\pi\, K\bar K$ system. That is based on the observation that `A Breit-Wigner resonance should exhibit two poles on different Riemann sheets which meet eac...
[ { "created": "Sun, 24 Jun 2012 12:10:58 GMT", "version": "v1" } ]
2015-06-05
[ [ "Dai", "L. Y.", "" ], [ "Wang", "X. G.", "" ], [ "Zheng", "H. Q.", "" ] ]
In a previous paper (Commun. Theor. Phys. 57 (2012) 841), we proposed a method to distinguish poles of different dynamical origin, in a unitarized amplitude of $\pi\pi\, K\bar K$ system. That is based on the observation that `A Breit-Wigner resonance should exhibit two poles on different Riemann sheets which meet each ...
hep-ph/0701239
Terekidi
Andrei G. Terekidi, Jurij W. Darewych, Marko Horbatsch
Hyperfine Structure and Zeeman Splitting in Two-Fermion Bound-State Systems
18 pages, 1 figure
null
null
null
hep-ph
null
A relativistic wave equation for bound states of two fermions with arbitrary masses which are exposed to a magnetic field is derived from quantum electrodynamics. The interaction kernels are based upon the generalized invariant M-matrices for inter-fermion and fermion-field interactions. As an application we calculat...
[ { "created": "Sun, 28 Jan 2007 18:40:17 GMT", "version": "v1" } ]
2007-05-23
[ [ "Terekidi", "Andrei G.", "" ], [ "Darewych", "Jurij W.", "" ], [ "Horbatsch", "Marko", "" ] ]
A relativistic wave equation for bound states of two fermions with arbitrary masses which are exposed to a magnetic field is derived from quantum electrodynamics. The interaction kernels are based upon the generalized invariant M-matrices for inter-fermion and fermion-field interactions. As an application we calculate ...
hep-ph/0503043
Volodymyr Magas
V.K. Magas, E. Oset, A. Ramos
Evidence for the two pole structure of the Lambda(1405) resonance
4 pages, 6 figures
Phys.Rev.Lett.95:052301,2005
10.1103/PhysRevLett.95.052301
null
hep-ph
null
The K^- p --> pi^0 pi^0 Sigma^0 reaction is studied within a chiral unitary model. The distribution of pi^0 Sigma^0 states forming the Lambda(1405) shows, in agreement with a recent experiment, a peak at 1420 MeV and a relatively narrow width of Gamma = 38 MeV. The mechanism for the reaction is largely dominated by t...
[ { "created": "Fri, 4 Mar 2005 11:20:53 GMT", "version": "v1" } ]
2008-11-26
[ [ "Magas", "V. K.", "" ], [ "Oset", "E.", "" ], [ "Ramos", "A.", "" ] ]
The K^- p --> pi^0 pi^0 Sigma^0 reaction is studied within a chiral unitary model. The distribution of pi^0 Sigma^0 states forming the Lambda(1405) shows, in agreement with a recent experiment, a peak at 1420 MeV and a relatively narrow width of Gamma = 38 MeV. The mechanism for the reaction is largely dominated by the...
2210.14407
Camilo Cort\'es Parra
C. Cortes-Parra, R. Martinez and J. S. Alvarado
Lepton masses in a non universal U(1) model with three families
null
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present an extension $U(1)_{X}$ to the Standard Model that reproduces the lepton mass structures determined by the experiments. In the charged sector, we introduced effective operators of dimension $n = 7$ to generate the mass of the electron, which is null at tree-level due to the $X$ charge. In the neutral secto...
[ { "created": "Wed, 26 Oct 2022 01:19:46 GMT", "version": "v1" } ]
2022-10-27
[ [ "Cortes-Parra", "C.", "" ], [ "Martinez", "R.", "" ], [ "Alvarado", "J. S.", "" ] ]
We present an extension $U(1)_{X}$ to the Standard Model that reproduces the lepton mass structures determined by the experiments. In the charged sector, we introduced effective operators of dimension $n = 7$ to generate the mass of the electron, which is null at tree-level due to the $X$ charge. In the neutral sector,...
1201.6139
Jacqueline A. Bonnet
Jacqueline A. Bonnet and Christian S. Fischer
Critical scaling of finite temperature QED_3 in anisotropic space-time
7 pages, 6 figures v2: clarifications added, typos corrected, version accepted by Phys. Lett. B
null
10.1016/j.physletb.2012.11.004
null
hep-ph cond-mat.supr-con hep-lat
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the scaling behavior of the critical temperature of anisotropic QED in 2+1 dimensions with respect to a variation of the number of fermions N_f. To this end we determine the order parameter of the chiral transition of the theory from a set of (truncated) Dyson-Schwinger equations for the fermion propag...
[ { "created": "Mon, 30 Jan 2012 09:36:54 GMT", "version": "v1" }, { "created": "Fri, 9 Nov 2012 12:22:31 GMT", "version": "v2" } ]
2012-11-12
[ [ "Bonnet", "Jacqueline A.", "" ], [ "Fischer", "Christian S.", "" ] ]
We investigate the scaling behavior of the critical temperature of anisotropic QED in 2+1 dimensions with respect to a variation of the number of fermions N_f. To this end we determine the order parameter of the chiral transition of the theory from a set of (truncated) Dyson-Schwinger equations for the fermion propagat...
hep-ph/0408209
Thomas D. Cohen
Aleksey Cherman, Thomas D. Cohen, Abhinav Nellore
The quantization of exotic states in SU(3) soliton models: A solvable quantum mechanical analog
8 pages; 3 figures; minor corrections; reference added
Phys.Rev. D70 (2004) 096003
10.1103/PhysRevD.70.096003
null
hep-ph hep-th nucl-th
null
The distinction between the rigid rotor and Callan-Klebanov approaches to the quantization of SU(3) solitons is considered in the context of exotic baryons. A numerically tractable quantum mechanical analog system is introduced to test the reliability of the two quantization schemes. We find that in the equivalent of...
[ { "created": "Wed, 18 Aug 2004 19:22:59 GMT", "version": "v1" }, { "created": "Wed, 25 Aug 2004 15:35:55 GMT", "version": "v2" } ]
2009-11-10
[ [ "Cherman", "Aleksey", "" ], [ "Cohen", "Thomas D.", "" ], [ "Nellore", "Abhinav", "" ] ]
The distinction between the rigid rotor and Callan-Klebanov approaches to the quantization of SU(3) solitons is considered in the context of exotic baryons. A numerically tractable quantum mechanical analog system is introduced to test the reliability of the two quantization schemes. We find that in the equivalent of t...
2112.13580
Xiu-Fei Li
Wei Chao, Huai-Ke Guo and Xiu-Fei Li
First Order Color Symmetry Breaking and Restoration Triggered by Electroweak Symmetry Non-restoration
7 pages, 3 figures
null
null
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this paper we propose a new approach for the spontaneous breaking and restoration of the $SU(3)_C$ color symmetry in the framework of electroweak symmetry non-restoration (EWSNR) at high temperature, which provides an alternative approach for the Baryogenesis. Due to the exotic high vacuum expectation value (VEV) ...
[ { "created": "Mon, 27 Dec 2021 09:03:33 GMT", "version": "v1" } ]
2021-12-28
[ [ "Chao", "Wei", "" ], [ "Guo", "Huai-Ke", "" ], [ "Li", "Xiu-Fei", "" ] ]
In this paper we propose a new approach for the spontaneous breaking and restoration of the $SU(3)_C$ color symmetry in the framework of electroweak symmetry non-restoration (EWSNR) at high temperature, which provides an alternative approach for the Baryogenesis. Due to the exotic high vacuum expectation value (VEV) of...
hep-ph/9805365
Kimball A. Milton
Leonard Gamberg, George R. Kalbfleisch, and Kimball A. Milton
Difficulties with Photonic Searches for Magnetic Monopoles
13 pages, 1 ps figure, REVTeX
null
null
OKHEP-98-02
hep-ph
null
Recently, there have been proposals that the classic Euler-Heisenberg Lagrangian together with duality could be employed to set limits on magnetic monopoles having masses less than 1 TeV. The D0 collaboration at Fermilab has used such a proposal to set mass limits based on the nonobservation of pairs of photons each ...
[ { "created": "Mon, 18 May 1998 19:13:50 GMT", "version": "v1" } ]
2007-05-23
[ [ "Gamberg", "Leonard", "" ], [ "Kalbfleisch", "George R.", "" ], [ "Milton", "Kimball A.", "" ] ]
Recently, there have been proposals that the classic Euler-Heisenberg Lagrangian together with duality could be employed to set limits on magnetic monopoles having masses less than 1 TeV. The D0 collaboration at Fermilab has used such a proposal to set mass limits based on the nonobservation of pairs of photons each wi...
2110.13204
Maeve Madigan
Maeve Madigan and James Moore
Parton distributions in the SMEFT from high-energy Drell-Yan tails
Contribution to the proceedings of the European Physical Society Conference on High Energy Physics (EPS-HEP2021), 26-30 July 2021
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a study of the interplay between PDF and EFT effects in high-mass Drell-Yan at the LHC. We quantify the impact of a consistent joint determination of the PDFs and Wilson coefficients on the bounds obtained on the EFT and examine the effect on the PDFs, determining the extent to which EFT signals could be r...
[ { "created": "Mon, 25 Oct 2021 18:38:13 GMT", "version": "v1" } ]
2021-10-27
[ [ "Madigan", "Maeve", "" ], [ "Moore", "James", "" ] ]
We present a study of the interplay between PDF and EFT effects in high-mass Drell-Yan at the LHC. We quantify the impact of a consistent joint determination of the PDFs and Wilson coefficients on the bounds obtained on the EFT and examine the effect on the PDFs, determining the extent to which EFT signals could be rea...
hep-ph/9706316
A. R. Zhitnitsky
E.V.Shuryak and A.R.Zhitnitsky
The gluon/charm content of the eta' meson and instantons
6 pages, LATEX
Phys.Rev. D57 (1998) 2001-2004
10.1103/PhysRevD.57.2001
NI 97033-NQF
hep-ph
null
Motivated by recent CLEO measurements of the B-->\eta' K decay, we evaluate gluon/charm content of the eta' meson using the interacting instanton liquid model of the QCD vacuum. Our result is very large due to the strong field of small-size instantons. We show that it provides quantitative explanations of the CLEO da...
[ { "created": "Tue, 10 Jun 1997 14:54:56 GMT", "version": "v1" } ]
2009-10-30
[ [ "Shuryak", "E. V.", "" ], [ "Zhitnitsky", "A. R.", "" ] ]
Motivated by recent CLEO measurements of the B-->\eta' K decay, we evaluate gluon/charm content of the eta' meson using the interacting instanton liquid model of the QCD vacuum. Our result is very large due to the strong field of small-size instantons. We show that it provides quantitative explanations of the CLEO data...
1402.4776
Joerg Jaeckel
Juergen Berges, and Joerg Jaeckel
Far from equilibrium dynamics of Bose-Einstein condensation for Axion Dark Matter
18 pages, 2 figures. v2 minor clarifications added
null
10.1103/PhysRevD.91.025020
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Axions and similar very weakly interacting particles are increasingly compelling candidates for the cold dark matter of the universe. Having very low mass and being produced non-thermally in the early Universe, axions feature extremely high occupation numbers. It has been suggested that this leads to the formation of...
[ { "created": "Wed, 19 Feb 2014 19:23:26 GMT", "version": "v1" }, { "created": "Fri, 9 Jan 2015 13:34:45 GMT", "version": "v2" } ]
2015-06-18
[ [ "Berges", "Juergen", "" ], [ "Jaeckel", "Joerg", "" ] ]
Axions and similar very weakly interacting particles are increasingly compelling candidates for the cold dark matter of the universe. Having very low mass and being produced non-thermally in the early Universe, axions feature extremely high occupation numbers. It has been suggested that this leads to the formation of a...
1210.2385
A. H. Rezaeian
Amir H. Rezaeian
CGC predictions for p+A collisions at the LHC and signature of QCD saturation
16 pages, 17 figures; v2: predictions/results unchanged, typos corrected, references added, predictions for charged hadron multiplicity distribution at various centralities in p+Pb collisions at 5.02 TeV added, a note with comparison to the p+Pb data from the ALICE Collaboration added. The version to appear in ...
Phys.Lett.B718:1058-1069,2013
10.1016/j.physletb.2012.11.066
null
hep-ph hep-ex nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present various predictions for the upcoming p+Pb collisions at \sqrt{S}=5 TeV within the color glass condensate (CGC) formalism, including single inclusive charged hadron production, single inclusive prompt photon production, direct photon production, charged hadron multiplicity distribution and photon-hadron azi...
[ { "created": "Mon, 8 Oct 2012 19:25:09 GMT", "version": "v1" }, { "created": "Fri, 30 Nov 2012 21:19:05 GMT", "version": "v2" } ]
2012-12-14
[ [ "Rezaeian", "Amir H.", "" ] ]
We present various predictions for the upcoming p+Pb collisions at \sqrt{S}=5 TeV within the color glass condensate (CGC) formalism, including single inclusive charged hadron production, single inclusive prompt photon production, direct photon production, charged hadron multiplicity distribution and photon-hadron azimu...
2309.14214
Matthias Steinhauser
Matthias Steinhauser
Analytic results for massive $2\to2$ processes
Contribution to the Proceedings of the 16th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology (RADCOR2023), 28th May - 2nd June, 2023, Crieff, Scotland, UK
null
null
P3H-23-062, TTP23-037
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We discuss recent (semi) analytic results for $2\to 2$ processes with massive internal and external particles in various regions of phase space. In the physical applications we restrict ourselves to $gg\to HH$.
[ { "created": "Mon, 25 Sep 2023 15:19:56 GMT", "version": "v1" } ]
2023-09-26
[ [ "Steinhauser", "Matthias", "" ] ]
We discuss recent (semi) analytic results for $2\to 2$ processes with massive internal and external particles in various regions of phase space. In the physical applications we restrict ourselves to $gg\to HH$.
hep-ph/9808311
Inna Aznauryan
I.G.Aznauryan, S.G.Stepanyan
The P_33(1232) resonance contribution into the amplitudes M_{1+}^{3/2},E_{1+}^{3/2},S_{1+}^{3/2} from an analysis of the p(e,e'p)\pi^0 data at Q^2 = 2.8, 3.2, and 4 (GeV/c)^2 within dispersion relation approach
null
Phys.Rev.D59:054009,1999
10.1103/PhysRevD.59.054009
JLAB-THY-98-31
hep-ph
null
Within the fixed-t dispersion relation approach we have analysed the TJNAF and DESY data on the exclusive p(e,e'p)\pi^0 reaction in order to find the P_{33}(1232) resonance contribution into the multipole amplitudes M_{1+}^{3/2},E_{1+}^{3/2},S_{1+}^{3/2}. As an input for the resonance and nonresonance contributions i...
[ { "created": "Thu, 13 Aug 1998 03:13:35 GMT", "version": "v1" } ]
2014-11-17
[ [ "Aznauryan", "I. G.", "" ], [ "Stepanyan", "S. G.", "" ] ]
Within the fixed-t dispersion relation approach we have analysed the TJNAF and DESY data on the exclusive p(e,e'p)\pi^0 reaction in order to find the P_{33}(1232) resonance contribution into the multipole amplitudes M_{1+}^{3/2},E_{1+}^{3/2},S_{1+}^{3/2}. As an input for the resonance and nonresonance contributions int...
hep-ph/9209283
Stephen Naculich
Stephen G. Naculich and Jonathan A. Bagger
Quantum Corrections to Deep Bags
Talk given at the XXVI Int. Conf. on High Energy Physics, August, 1992 LATEX file, 7 pages + 2 figures available upon request, JHU-TIPAC-920021
null
10.1063/1.43441
null
hep-ph
null
Nontopological solitons, or ``bags,'' can arise when fermions acquire their mass through a Yukawa coupling to some scalar field. Bags have played an important role in models of baryons, nuclei, and more recently, in the idea that a Higgs condensate may form around a very heavy top quark. It has been claimed that deep...
[ { "created": "Fri, 25 Sep 1992 22:51:00 GMT", "version": "v1" } ]
2009-10-22
[ [ "Naculich", "Stephen G.", "" ], [ "Bagger", "Jonathan A.", "" ] ]
Nontopological solitons, or ``bags,'' can arise when fermions acquire their mass through a Yukawa coupling to some scalar field. Bags have played an important role in models of baryons, nuclei, and more recently, in the idea that a Higgs condensate may form around a very heavy top quark. It has been claimed that deep b...
2211.09596
Julia Panteleeva
J. Yu. Panteleeva, E. Epelbaum, J. Gegelia, U.-G. Mei{\ss}ner
Definition of gravitational local spatial densities for spin-0 and spin-1/2 systems
null
Eur.Phys.J.C 83 (2023) 7, 617
null
null
hep-ph hep-th nucl-th
http://creativecommons.org/licenses/by/4.0/
We work out details of defining the spatial densities corresponding to the gravitational form factors of spin-0 and spin-1/2 systems using spherically symmetric sharply localized wave packets. The expressions for the spatial densities are provided in the frames with both zero and non-zero expectation values of the mo...
[ { "created": "Thu, 17 Nov 2022 15:42:18 GMT", "version": "v1" }, { "created": "Wed, 25 Jan 2023 09:16:22 GMT", "version": "v2" }, { "created": "Mon, 17 Jul 2023 09:26:27 GMT", "version": "v3" } ]
2023-07-18
[ [ "Panteleeva", "J. Yu.", "" ], [ "Epelbaum", "E.", "" ], [ "Gegelia", "J.", "" ], [ "Meißner", "U. -G.", "" ] ]
We work out details of defining the spatial densities corresponding to the gravitational form factors of spin-0 and spin-1/2 systems using spherically symmetric sharply localized wave packets. The expressions for the spatial densities are provided in the frames with both zero and non-zero expectation values of the mome...
hep-ph/0603121
Sandro Uccirati
Giampiero Passarino and Sandro Uccirati
Two-Loop Vertices in Quantum Field Theory: Infrared and Collinear Divergent Configurations
62 pages, 15 figures, 16 tables
Nucl.Phys. B747 (2006) 113-189
10.1016/j.nuclphysb.2006.04.014
null
hep-ph
null
A comprehensive study is performed of two-loop Feynman diagrams with three external legs which, due to the exchange of massless gauge-bosons, give raise to infrared and collinear divergencies. Their relevance in assembling realistic computations of next-to-next-to-leading corrections to physical observables is emphas...
[ { "created": "Thu, 16 Mar 2006 14:12:42 GMT", "version": "v1" } ]
2009-11-11
[ [ "Passarino", "Giampiero", "" ], [ "Uccirati", "Sandro", "" ] ]
A comprehensive study is performed of two-loop Feynman diagrams with three external legs which, due to the exchange of massless gauge-bosons, give raise to infrared and collinear divergencies. Their relevance in assembling realistic computations of next-to-next-to-leading corrections to physical observables is emphasis...
hep-ph/0410315
Hai-Yang Cheng
Hai-Yang Cheng
Light Front Approach for Strong and Weak Decays of Pentaquarks
3 pages, talk given at the 2004 DPF Meeting, Riverside, CA. Aug 26-31, 2004
Int.J.Mod.Phys. A20 (2005) 3739-3741
10.1142/S0217751X05027473
null
hep-ph
null
Strong and weak decays of pentaquarks are studied in the framework of the light-front approach.
[ { "created": "Sat, 23 Oct 2004 06:22:50 GMT", "version": "v1" } ]
2009-11-10
[ [ "Cheng", "Hai-Yang", "" ] ]
Strong and weak decays of pentaquarks are studied in the framework of the light-front approach.
2309.04523
Jaco ter Hoeve
Jaco ter Hoeve, Giacomo Magni, Juan Rojo, Alejo N. Rossia and Eleni Vryonidou
The automation of SMEFT-Assisted Constraints on UV-Complete Models
29+16 pages, 15 figures, 4 appendices. Open-source code is available on http://lhcfitnikhef.github.io/smefit_release/ and http://github.com/arossia94/match2fit
null
null
Nikhef 2023-011
hep-ph
http://creativecommons.org/licenses/by/4.0/
The ongoing Effective Field Theory (EFT) program at the LHC and elsewhere is motivated by streamlining the connection between experimental data and UV-complete scenarios of heavy new physics beyond the Standard Model (BSM). This connection is provided by matching relations mapping the Wilson coefficients of the EFT t...
[ { "created": "Fri, 8 Sep 2023 18:00:01 GMT", "version": "v1" }, { "created": "Thu, 23 May 2024 08:40:18 GMT", "version": "v2" } ]
2024-05-24
[ [ "ter Hoeve", "Jaco", "" ], [ "Magni", "Giacomo", "" ], [ "Rojo", "Juan", "" ], [ "Rossia", "Alejo N.", "" ], [ "Vryonidou", "Eleni", "" ] ]
The ongoing Effective Field Theory (EFT) program at the LHC and elsewhere is motivated by streamlining the connection between experimental data and UV-complete scenarios of heavy new physics beyond the Standard Model (BSM). This connection is provided by matching relations mapping the Wilson coefficients of the EFT to ...
0706.2136
Matthias Neubert
Matthias Neubert (Johannes Gutenberg University Mainz)
Factorization analysis for the fragmentation functions of hadrons containing a heavy quark
26 pages, 5 figures
null
null
MZ-TH/07-08
hep-ph
null
Using methods of effective field theory, a systematic analysis of the fragmentation functions D_{a/H}(x,m_Q) of a hadron H containing a heavy quark Q is performed (with a=Q,Q_bar,q,q_bar,g). By integrating out pair production of virtual and real heavy quarks, the fragmentation functions are matched onto a single nonp...
[ { "created": "Thu, 14 Jun 2007 14:46:12 GMT", "version": "v1" } ]
2007-06-15
[ [ "Neubert", "Matthias", "", "Johannes Gutenberg University Mainz" ] ]
Using methods of effective field theory, a systematic analysis of the fragmentation functions D_{a/H}(x,m_Q) of a hadron H containing a heavy quark Q is performed (with a=Q,Q_bar,q,q_bar,g). By integrating out pair production of virtual and real heavy quarks, the fragmentation functions are matched onto a single nonper...
hep-ph/0701219
Andre Utermann
Daniel Boer, Andre Utermann, Erik Wessels
Compatibility of phenomenological dipole cross sections with the Balitsky-Kovchegov equation
14 pages, 8 figures. Extensive revisions, several new results, plots, references and conclusions added; to appear in Phys.Rev.D
Phys.Rev.D75:094022,2007
10.1103/PhysRevD.75.094022
null
hep-ph
null
Phenomenological models of the dipole cross section that enters in the description of for instance deep inelastic scattering at very high energies have had considerable success in describing the available small-x data in both the saturation region and the so-called extended geometric scaling (EGS) region. We investig...
[ { "created": "Thu, 25 Jan 2007 17:00:20 GMT", "version": "v1" }, { "created": "Thu, 3 May 2007 11:37:51 GMT", "version": "v2" } ]
2008-11-26
[ [ "Boer", "Daniel", "" ], [ "Utermann", "Andre", "" ], [ "Wessels", "Erik", "" ] ]
Phenomenological models of the dipole cross section that enters in the description of for instance deep inelastic scattering at very high energies have had considerable success in describing the available small-x data in both the saturation region and the so-called extended geometric scaling (EGS) region. We investigat...
hep-ph/0302261
Mikhail Voloshin
M.B. Voloshin
The enhancement of the decay Upsilon(1D) -> eta Upsilon(1S) by the axial anomaly in QCD
11 pages
Phys.Lett. B562 (2003) 68-74
10.1016/S0370-2693(03)00537-9
TPI-MINN-03/06-T, UMN-TH-2131-03
hep-ph
null
It is shown that the rates of the decays Upsilon(1^3D_1) -> eta Upsilon(1S) and Upsilon(1^3D_2) -> eta Upsilon(1S) should be comparable to and likely exceed that of the recently discussed in the literature two-pion transition Upsilon(1D) -> pi pi Upsilon(1S). The reason for this behavior is that the discussed eta tra...
[ { "created": "Thu, 27 Feb 2003 17:44:35 GMT", "version": "v1" } ]
2009-11-10
[ [ "Voloshin", "M. B.", "" ] ]
It is shown that the rates of the decays Upsilon(1^3D_1) -> eta Upsilon(1S) and Upsilon(1^3D_2) -> eta Upsilon(1S) should be comparable to and likely exceed that of the recently discussed in the literature two-pion transition Upsilon(1D) -> pi pi Upsilon(1S). The reason for this behavior is that the discussed eta trans...
hep-ph/9611350
Sergey Goloskokov
S.V. Goloskokov
On Possible Study of Quark-Pomeron Coupling Structure at the COMPASS spectrometer
10 pages, latex, 6-Ps figures
Mod.Phys.Lett. A12 (1997) 173-182
10.1142/S0217732397000170
null
hep-ph
null
We analyse the diffractive $Q \bar Q$ production and final jet kinematics in polarized deep-inelastic lp scattering at $\sqrt{s}=20 GeV$. We show that this reaction can be used in the new spectrometer of the COMPASS Collaboration at CERN to study the quark-pomeron coupling structure.
[ { "created": "Mon, 18 Nov 1996 08:29:52 GMT", "version": "v1" } ]
2015-06-25
[ [ "Goloskokov", "S. V.", "" ] ]
We analyse the diffractive $Q \bar Q$ production and final jet kinematics in polarized deep-inelastic lp scattering at $\sqrt{s}=20 GeV$. We show that this reaction can be used in the new spectrometer of the COMPASS Collaboration at CERN to study the quark-pomeron coupling structure.
2402.00509
Jannis Lang
Jannis Lang
Precise SMEFT predictions for di-Higgs production
Contribution to: "The Eleventh Annual Conference on Large Hadron Collider Physics" (LHCP2023), 22-26 May 2023, Belgrade, Serbia
null
null
P3H-24-006
hep-ph
http://creativecommons.org/licenses/by/4.0/
We present results of precision calculations for di-Higgs production that combine NLO QCD corrections with operators at canonical dimension six within Standard Model Effective Field Theory (SMEFT). We discuss possible options for operator contributions within a given EFT framework and sources of theory uncertainties....
[ { "created": "Thu, 1 Feb 2024 11:22:14 GMT", "version": "v1" } ]
2024-02-02
[ [ "Lang", "Jannis", "" ] ]
We present results of precision calculations for di-Higgs production that combine NLO QCD corrections with operators at canonical dimension six within Standard Model Effective Field Theory (SMEFT). We discuss possible options for operator contributions within a given EFT framework and sources of theory uncertainties.
hep-ph/9306242
null
K.S. Babu and S.M. Barr
Natural Suppression of Higgsino-Mediated Proton Decay in Supersymmetric SO(10)
39 pages (3 Feynman graphs not included), in Plain LaTeX, BA-93-26
Phys.Rev.D48:5354-5364,1993
10.1103/PhysRevD.48.5354
null
hep-ph
null
In supersymmetric Grand Unified Theories, proton decay mediated by the color--triplet higgsino is generally problematic and requires some fine--tuning of parameters. We present a mechanism which naturally suppresses such dimension 5 operators in the context of SUSY $SO(10)$. The mechanism, which implements natural do...
[ { "created": "Mon, 7 Jun 1993 20:38:18 GMT", "version": "v1" } ]
2011-05-12
[ [ "Babu", "K. S.", "" ], [ "Barr", "S. M.", "" ] ]
In supersymmetric Grand Unified Theories, proton decay mediated by the color--triplet higgsino is generally problematic and requires some fine--tuning of parameters. We present a mechanism which naturally suppresses such dimension 5 operators in the context of SUSY $SO(10)$. The mechanism, which implements natural doub...
1312.4010
Kai Wang
Kai Wang and Guohuai Zhu (Zhejiang U.)
Higgs Precision Measurements and Flavor Physics: A Supersymmetric Example
Review for Chinese Science Bulletin and CEPC SPPC Proposal
Chin.Sci.Bull. 59 (2014) 3703-3708
10.1007/s11434-014-0390-7
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
[Review for "Chinese Science Bulletin" and CEPC+SPPC Proposal] Rare decays in flavor physics often suffer from Helicity suppress and Loop suppress. Helicity flip is a direct consequence of chiral $U(3)$ symmetry breaking and electroweak symmetry breaking. The identical feature is also shared by the mass generation of...
[ { "created": "Sat, 14 Dec 2013 07:02:30 GMT", "version": "v1" } ]
2014-10-07
[ [ "Wang", "Kai", "", "Zhejiang U." ], [ "Zhu", "Guohuai", "", "Zhejiang U." ] ]
[Review for "Chinese Science Bulletin" and CEPC+SPPC Proposal] Rare decays in flavor physics often suffer from Helicity suppress and Loop suppress. Helicity flip is a direct consequence of chiral $U(3)$ symmetry breaking and electroweak symmetry breaking. The identical feature is also shared by the mass generation of S...
1501.05959
Karoly Urmossy
K. Urmossy, T. S. Bir\'o, G. G. Barnaf\"oldi and Z. Xu
$v_2$ of charged hadrons in a`soft + hard' model for PbPb collisions at $\sqrt s$ = 2.76 ATeV
Contribution to the proceedings of the conference "Workshop on Particle Correlation and Femtoscopy 2014". https://indico.cern.ch/event/300974/
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We describe transverse spectra as well as azimuthal anisotropy ($v_2$) of charged hadrons stemming from various centrality PbPb collisions at $\sqrt s$ = 2.76 ATeV analytically in a `soft + hard' model. In this model, we propose that hadron yields produced in heavy-ion collisions are simply the sum of yields stemming...
[ { "created": "Fri, 16 Jan 2015 22:33:24 GMT", "version": "v1" } ]
2015-01-27
[ [ "Urmossy", "K.", "" ], [ "Biró", "T. S.", "" ], [ "Barnaföldi", "G. G.", "" ], [ "Xu", "Z.", "" ] ]
We describe transverse spectra as well as azimuthal anisotropy ($v_2$) of charged hadrons stemming from various centrality PbPb collisions at $\sqrt s$ = 2.76 ATeV analytically in a `soft + hard' model. In this model, we propose that hadron yields produced in heavy-ion collisions are simply the sum of yields stemming f...
hep-ph/9601229
null
M. Kachelriess
Unstable states in QED of strong magnetic fields
Revtex, 7 pages. To appear in Phys. Rev. D53(2)
Phys.Rev. D53 (1996) 974-979
10.1103/PhysRevD.53.974
null
hep-ph astro-ph
null
We question the use of stable asymptotic scattering states in QED of strong magnetic fields. To correctly describe excited Landau states and photons above the pair creation threshold the asymptotic fields are chosen as generalized Licht fields. In this way the off-shell behavior of unstable particles is automatically...
[ { "created": "Tue, 9 Jan 1996 10:55:49 GMT", "version": "v1" } ]
2009-10-28
[ [ "Kachelriess", "M.", "" ] ]
We question the use of stable asymptotic scattering states in QED of strong magnetic fields. To correctly describe excited Landau states and photons above the pair creation threshold the asymptotic fields are chosen as generalized Licht fields. In this way the off-shell behavior of unstable particles is automatically t...
hep-ph/0611029
Simon Albino
S. Albino, B. A. Kniehl, G. Kramer, C. Sandoval
Confronting fragmentation function universality with single hadron inclusive production at HERA and $e^+ e^-$ colliders
null
Phys.Rev.D75:034018,2007
10.1103/PhysRevD.75.034018
DESY 06-197
hep-ph
null
Predictions for light charged hadron production data in the current fragmentation region of deeply inelastic scattering from the H1 and ZEUS experiments are calculated using perturbative Quantum Chromodynamics at next-to-leading order, and using fragmentation functions obtained by fitting to similar data from $e^+ e^...
[ { "created": "Thu, 2 Nov 2006 15:18:05 GMT", "version": "v1" }, { "created": "Mon, 5 Feb 2007 14:16:05 GMT", "version": "v2" } ]
2008-11-26
[ [ "Albino", "S.", "" ], [ "Kniehl", "B. A.", "" ], [ "Kramer", "G.", "" ], [ "Sandoval", "C.", "" ] ]
Predictions for light charged hadron production data in the current fragmentation region of deeply inelastic scattering from the H1 and ZEUS experiments are calculated using perturbative Quantum Chromodynamics at next-to-leading order, and using fragmentation functions obtained by fitting to similar data from $e^+ e^-$...