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1509.07727
Antoni Szczurek
Antoni Szczurek
Exploring double-parton scattering effects for jets with large rapidity separation and in four-jet production at the LHC
8 pages, 5 figures a talk presented at the 16th conference on Elastic and Diffractive Scattering, EDS Blois 2015, Borgo, Corsica, France, June/July 2015
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present an estimation of the contribution of double parton scattering (DPS) for jets widely separated in rapidity and for four-jet sample. In the case of four-jet production we calculate cross section for both single-parton scattering (SPS) using the code ALPGEN as well as for DPS in LO collinear approach. The DPS...
[ { "created": "Fri, 25 Sep 2015 14:04:33 GMT", "version": "v1" } ]
2015-09-28
[ [ "Szczurek", "Antoni", "" ] ]
We present an estimation of the contribution of double parton scattering (DPS) for jets widely separated in rapidity and for four-jet sample. In the case of four-jet production we calculate cross section for both single-parton scattering (SPS) using the code ALPGEN as well as for DPS in LO collinear approach. The DPS c...
hep-ph/9801239
El Hassan Elaaoud
E. El aaoud
$D_s^+ \to \phi \rho^+$ Decay
7 pages, LaTex
Phys. Rev. D 58, 037502 (1998)
10.1103/PhysRevD.58.037502
Alberta Thy-01-98
hep-ph
null
Motivated by the experimental measurement of the decay rate, $\Gamma$, and the longitudinal polarization, $P_L$, in the Cabibbo favored decay $D_s^+\to \phi {\rho}^{+}$, we have studied theoretical prediction within the context of factorization approximation invoking several form factors models. We were able to obtai...
[ { "created": "Thu, 8 Jan 1998 06:05:53 GMT", "version": "v1" } ]
2016-08-25
[ [ "aaoud", "E. El", "" ] ]
Motivated by the experimental measurement of the decay rate, $\Gamma$, and the longitudinal polarization, $P_L$, in the Cabibbo favored decay $D_s^+\to \phi {\rho}^{+}$, we have studied theoretical prediction within the context of factorization approximation invoking several form factors models. We were able to obtain ...
hep-ph/9505438
Rey Soo Jong
John Ellis, D.V. Nanopoulos, Keith A. Olive and Soo-Jong REY
On the Thermal Regeneration Rate for Light Gravitinos in the Early Universe
REVTEX 32 pages, two encapsulated ps figure files
Astropart.Phys.4:371-386,1996
10.1016/0927-6505(96)00006-0
ACT-07/95, CERN-TH/95-88, CTP-TAMU-21/95, UMN-TH-1349/95, SNUTP 95-041
hep-ph astro-ph
null
We investigate the light gravitino regeneration rate in the early Universe in models based on $N=1$ supergravity. Motivated by a recent claim by Fischler, we evaluate finite-temperature effects on the gravitino regeneration rate due to the hot primordial plasma for a wide range of the supersymmetry-breaking scale $F$...
[ { "created": "Wed, 31 May 1995 15:38:07 GMT", "version": "v1" }, { "created": "Wed, 31 May 1995 16:45:02 GMT", "version": "v2" } ]
2009-09-11
[ [ "Ellis", "John", "" ], [ "Nanopoulos", "D. V.", "" ], [ "Olive", "Keith A.", "" ], [ "REY", "Soo-Jong", "" ] ]
We investigate the light gravitino regeneration rate in the early Universe in models based on $N=1$ supergravity. Motivated by a recent claim by Fischler, we evaluate finite-temperature effects on the gravitino regeneration rate due to the hot primordial plasma for a wide range of the supersymmetry-breaking scale $F$. ...
2006.00660
Yoshimasa Kurihara
Hieu Minh Tran, Yoshimasa Kurihara
Tau $g-2$ at $e^-e^+$ colliders with momentum dependent form factor
18 pages, 6 figures
null
10.1140/epjc/s10052-021-08846-x
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The deviation between the standard model prediction and the measurement of the muon g-2 is currently at 3-4 sigma (can be up to 7 sigma in the upcoming experiment E989). If new physics is responsible for such discrepancy, it is expected that the new contributions to tau g-2 are even larger than that for muon due to i...
[ { "created": "Mon, 1 Jun 2020 01:28:41 GMT", "version": "v1" }, { "created": "Tue, 30 Jun 2020 02:38:15 GMT", "version": "v2" } ]
2021-02-24
[ [ "Tran", "Hieu Minh", "" ], [ "Kurihara", "Yoshimasa", "" ] ]
The deviation between the standard model prediction and the measurement of the muon g-2 is currently at 3-4 sigma (can be up to 7 sigma in the upcoming experiment E989). If new physics is responsible for such discrepancy, it is expected that the new contributions to tau g-2 are even larger than that for muon due to its...
hep-ph/9810205
Bodo Lampe
K.J.Abraham and Bodo Lampe
Possible Nonstandard Effects in Z+Gamma Events at LEP2
13 pages latex with 4 eps figures
Phys.Lett. B446 (1999) 163-169
10.1016/S0370-2693(98)01528-7
MPI-PhT/98-71
hep-ph
null
We point out that the so--called 'radiative return' events at LEP2 are suited to the study of nonstandard physics, particularly if the vector bosons are emitted into the central detector region. An effective vertex is constructed which contains the most general gauge invariant eeZGamma interaction and its phenomenolo...
[ { "created": "Thu, 1 Oct 1998 09:15:05 GMT", "version": "v1" } ]
2009-10-31
[ [ "Abraham", "K. J.", "" ], [ "Lampe", "Bodo", "" ] ]
We point out that the so--called 'radiative return' events at LEP2 are suited to the study of nonstandard physics, particularly if the vector bosons are emitted into the central detector region. An effective vertex is constructed which contains the most general gauge invariant eeZGamma interaction and its phenomenologi...
hep-ph/0507186
Juan Jose Sanz-Cillero
J.J. Sanz-Cillero
Spin-1 Correlators at Large NC: Matching OPE and Resonance Theory up to O(alpha_s)
36 pages, 19 figures. Minor changes (added reference,...). Paper as finally appeared in press
Nucl.Phys. B732 (2006) 136-168
10.1016/j.nuclphysb.2005.10.021
null
hep-ph
null
The relation between the quark-gluon description of QCD and the hadronic picture is studied up to order alpha_s. The analysis of the spin-1 correlators is developed within the large NC framework. Both representations are shown to be equivalent in the euclidean domain, where the Operator Product Expansion is valid. By...
[ { "created": "Fri, 15 Jul 2005 10:46:13 GMT", "version": "v1" }, { "created": "Tue, 15 Aug 2006 18:33:06 GMT", "version": "v2" } ]
2009-11-11
[ [ "Sanz-Cillero", "J. J.", "" ] ]
The relation between the quark-gluon description of QCD and the hadronic picture is studied up to order alpha_s. The analysis of the spin-1 correlators is developed within the large NC framework. Both representations are shown to be equivalent in the euclidean domain, where the Operator Product Expansion is valid. By c...
hep-ph/0202157
Ted Barnes
T. Barnes
Hadron 2001 Conference Summary: Theory
17 pages, 5 figures. Presented at HADRON2001 (Protvino, Russia, 25 Aug - 1 Sep 2001)
AIP Conf.Proc. 619 (2002) 447-462
10.1063/1.1482473
null
hep-ph nucl-th
null
This contribution reviews some of the theoretical issues and predictions that were discussed at HADRON2001. The topics are divided into principle areas, 1) exotics, 2) vectors, 3) scalars, and 4) higher-mass states. The current status of theoretical predictions for each area are summarized, together with a brief desc...
[ { "created": "Fri, 15 Feb 2002 21:07:10 GMT", "version": "v1" } ]
2009-11-07
[ [ "Barnes", "T.", "" ] ]
This contribution reviews some of the theoretical issues and predictions that were discussed at HADRON2001. The topics are divided into principle areas, 1) exotics, 2) vectors, 3) scalars, and 4) higher-mass states. The current status of theoretical predictions for each area are summarized, together with a brief descri...
1202.4630
Fr\'ed\'eric Jugeau Dr.
Frederic Jugeau
On the form factors of semileptonic baryon decays in Heavy Quark Effective Theory
Invited talk at the 5th High-Energy Physics International Conference HEP-MAD 11, Antananarivo, Madagascar, August 25-31 2011
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study consequences of the non-forward amplitude for the semileptonic baryon decay Lambda_b into Lambda_c which will be measured in detail at LHCb. We obtain a sum rule for the subleading elastic Isgur-Wise (IW) function A(w) that originates from the kinetic part of the O(1/mQ) effective Lagrangian perturbation. In...
[ { "created": "Tue, 21 Feb 2012 13:17:57 GMT", "version": "v1" } ]
2012-02-22
[ [ "Jugeau", "Frederic", "" ] ]
We study consequences of the non-forward amplitude for the semileptonic baryon decay Lambda_b into Lambda_c which will be measured in detail at LHCb. We obtain a sum rule for the subleading elastic Isgur-Wise (IW) function A(w) that originates from the kinetic part of the O(1/mQ) effective Lagrangian perturbation. In t...
hep-ph/9408341
Ed Yao
Kassa Adel and York-Peng Yao
Renormalization of four-quark operators, effective theory, and the role of evanescent operators
39 pages plain TeX and 10 Postscript figures available upon request, McGill/ 94-14 and UM-TH-94-29
Phys.Rev. D53 (1996) 374-388
10.1103/PhysRevD.53.374
null
hep-ph
null
We present, in the context of dimensional regularization, a prescription to renormalize Feynman diagrams with an arbitrary number of external fermions. This prescription, which is based on the original t'Hooft-Veltman proposal to keep external particles in four dimensions, is particularly useful to define the 'renorm...
[ { "created": "Mon, 22 Aug 1994 15:43:27 GMT", "version": "v1" } ]
2009-10-28
[ [ "Adel", "Kassa", "" ], [ "Yao", "York-Peng", "" ] ]
We present, in the context of dimensional regularization, a prescription to renormalize Feynman diagrams with an arbitrary number of external fermions. This prescription, which is based on the original t'Hooft-Veltman proposal to keep external particles in four dimensions, is particularly useful to define the 'renormal...
hep-ph/0411273
Roman Nevzorov
C. Froggatt, L. Laperashvili, R.Nevzorov, H.B.Nielsen
No--scale supergravity and the Multiple Point Principle
To appear in the proceedings of International Workshop on What Comes Beyond the Standard Model?, Bled, Slovenia, 19-30 Jul 2004
null
null
null
hep-ph
null
We review symmetries protecting a zero value for the cosmological constant in no--scale supergravity and reveal the connection between the Multiple Point Principle, no--scale and superstring inspired models.
[ { "created": "Sat, 20 Nov 2004 16:05:40 GMT", "version": "v1" } ]
2007-05-23
[ [ "Froggatt", "C.", "" ], [ "Laperashvili", "L.", "" ], [ "Nevzorov", "R.", "" ], [ "Nielsen", "H. B.", "" ] ]
We review symmetries protecting a zero value for the cosmological constant in no--scale supergravity and reveal the connection between the Multiple Point Principle, no--scale and superstring inspired models.
2006.14089
Ningqiang Song
Joseph Bramante, Ningqiang Song
Electric But Not Eclectic: Thermal Relic Dark Matter for the XENON1T Excess
8 pages, 2 figures, added references and discussion of invisible V decay and CMB constraints, matched published version
Phys. Rev. Lett. 125, 161805 (2020)
10.1103/PhysRevLett.125.161805
null
hep-ph astro-ph.CO hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The identity of dark matter is being sought with increasingly sensitive and voluminous underground detectors. Recently the XENON1T collaboration reported excess electronic recoil events, with most of these having recoil energies around $1-30$ keV. We show that a straightforward model of inelastic dark matter produced...
[ { "created": "Wed, 24 Jun 2020 22:40:34 GMT", "version": "v1" }, { "created": "Mon, 29 Jun 2020 14:34:14 GMT", "version": "v2" }, { "created": "Tue, 13 Oct 2020 01:38:28 GMT", "version": "v3" } ]
2020-10-21
[ [ "Bramante", "Joseph", "" ], [ "Song", "Ningqiang", "" ] ]
The identity of dark matter is being sought with increasingly sensitive and voluminous underground detectors. Recently the XENON1T collaboration reported excess electronic recoil events, with most of these having recoil energies around $1-30$ keV. We show that a straightforward model of inelastic dark matter produced v...
1202.4882
Yu. A. Simonov
A. M. Badalian, V. D. Orlovsky, Yu. A. Simonov (Institute of Theoretical and Experimental Physics, Moscow, Russia) and B. L. G. Bakker (Dept.of Physics and Astronomy, Vrije Universiteit, Amsterdam, The Netherlands)
The ratio of decay widths of X(3872) to $ \psi^{\prime}\gamma $ and $ J/\psi\gamma$ as a test of the X(3872) dynamical structure
14 pages,2 Tables
Phys. Rev. D 85, 114002 (2012)
10.1103/PhysRevD.85.114002
null
hep-ph hep-ex nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Radiative decays of X(3872) with $J^{PC}=1^{++}$ are studied in the coupled-channel approach, where the $c\bar c$ states are described by relativistic string Hamiltonian, while for the decay channels $DD^*$ a string breaking mechanism is used. Within this method a sharp peak and correct mass shift of the $2 {}^3P_1$ ...
[ { "created": "Wed, 22 Feb 2012 11:12:31 GMT", "version": "v1" }, { "created": "Mon, 26 Mar 2012 08:36:29 GMT", "version": "v2" } ]
2014-01-29
[ [ "Badalian", "A. M.", "", "Institute of\n Theoretical and Experimental Physics, Moscow, Russia" ], [ "Orlovsky", "V. D.", "", "Institute of\n Theoretical and Experimental Physics, Moscow, Russia" ], [ "Simonov", "Yu. A.", "", "Institute of\n Theoretical an...
Radiative decays of X(3872) with $J^{PC}=1^{++}$ are studied in the coupled-channel approach, where the $c\bar c$ states are described by relativistic string Hamiltonian, while for the decay channels $DD^*$ a string breaking mechanism is used. Within this method a sharp peak and correct mass shift of the $2 {}^3P_1$ ch...
hep-ph/0510094
Edmond Iancu
E. Iancu, G. Soyez and D.N. Triantafyllopoulos
On the Probabilistic Interpretation of the Evolution Equations with Pomeron Loops in QCD
31 pages, 2 figures
Nucl.Phys. A768 (2006) 194-221
10.1016/j.nuclphysa.2006.01.013
SACLAY-T05/138
hep-ph
null
We study some structural aspects of the evolution equations with Pomeron loops recently derived in QCD at high energy and for a large number of colors, with the purpose of clarifying their probabilistic interpretation. We show that, in spite of their appealing dipolar structure and of the self-duality of the underlyi...
[ { "created": "Fri, 7 Oct 2005 15:17:49 GMT", "version": "v1" } ]
2009-11-11
[ [ "Iancu", "E.", "" ], [ "Soyez", "G.", "" ], [ "Triantafyllopoulos", "D. N.", "" ] ]
We study some structural aspects of the evolution equations with Pomeron loops recently derived in QCD at high energy and for a large number of colors, with the purpose of clarifying their probabilistic interpretation. We show that, in spite of their appealing dipolar structure and of the self-duality of the underlying...
2310.00631
Duanyuan Gao
Duan-yuan Gao and Yuan-Chuan Zou
Jet Lorentz factor constraint for GRB 221009A based on the optical depth of the TeV photons
ApJL accepted
null
null
null
hep-ph astro-ph.HE
http://creativecommons.org/licenses/by/4.0/
The recent detection of tera-electronvolt (TeV) photons from the record-breaking gamma-ray burst GRB 221009A during its prompt phase poses challenges for constraining its Lorentz factor. We re-evaluate the constraints on the jet Lorentz factor considering a two-zone model, wherein the TeV photons originate from the e...
[ { "created": "Sun, 1 Oct 2023 09:52:08 GMT", "version": "v1" } ]
2023-10-04
[ [ "Gao", "Duan-yuan", "" ], [ "Zou", "Yuan-Chuan", "" ] ]
The recent detection of tera-electronvolt (TeV) photons from the record-breaking gamma-ray burst GRB 221009A during its prompt phase poses challenges for constraining its Lorentz factor. We re-evaluate the constraints on the jet Lorentz factor considering a two-zone model, wherein the TeV photons originate from the ext...
1207.4207
Sally Dawson
S. Dawson, T. Han, W. K. Lai, A. K. Leibovich, and I. Lewis
Resummation Effects in Vector-Boson and Higgs Associated Production
25 pages, references updated
null
10.1103/PhysRevD.86.074007
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Fixed-order QCD radiative corrections to the vector-boson and Higgs associated production channels, pp -> VH (V=W, Z), at hadron colliders are well understood. We combine higher order perturbative QCD calculations with soft-gluon resummation of both threshold logarithms and logarithms which are important at low trans...
[ { "created": "Tue, 17 Jul 2012 20:07:01 GMT", "version": "v1" }, { "created": "Mon, 23 Jul 2012 19:03:13 GMT", "version": "v2" } ]
2013-05-30
[ [ "Dawson", "S.", "" ], [ "Han", "T.", "" ], [ "Lai", "W. K.", "" ], [ "Leibovich", "A. K.", "" ], [ "Lewis", "I.", "" ] ]
Fixed-order QCD radiative corrections to the vector-boson and Higgs associated production channels, pp -> VH (V=W, Z), at hadron colliders are well understood. We combine higher order perturbative QCD calculations with soft-gluon resummation of both threshold logarithms and logarithms which are important at low transve...
2301.13439
Dao-Neng Gao
Dao-Neng Gao
Rare $W$-boson decays into a vector meson and lepton pair
8 pages, 3 figures. Some discussions added. Published version
Phys. Rev. D 107, 113001 (2023); Erratum: Phys. Rev. D 108, 039904 (2023)
10.1103/PhysRevD.107.113001
USTC-ICTS/PCFT-23-04
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We have presented a theoretical study of exclusive rare $W$-boson decays, $W\to V\ell\bar{\nu}_\ell$ with $V$ denoting a neutral vector meson and $\ell=e$ or $\mu$, in the standard model. The leading-order contributions to these processes are given by $W\to \gamma^*\ell\bar{\nu}_\ell$ with the subsequent $\gamma^*\to...
[ { "created": "Tue, 31 Jan 2023 06:33:36 GMT", "version": "v1" }, { "created": "Sat, 17 Jun 2023 09:34:07 GMT", "version": "v2" } ]
2023-09-19
[ [ "Gao", "Dao-Neng", "" ] ]
We have presented a theoretical study of exclusive rare $W$-boson decays, $W\to V\ell\bar{\nu}_\ell$ with $V$ denoting a neutral vector meson and $\ell=e$ or $\mu$, in the standard model. The leading-order contributions to these processes are given by $W\to \gamma^*\ell\bar{\nu}_\ell$ with the subsequent $\gamma^*\to V...
1405.0069
Yoshio Koide
Yoshio Koide and Hiroyuki Nishiura
Universal Bilinear Form of Quark and Lepton Mass Matrices
17 pages, 2 figures, Accepted for publication in PRD
Phys.Rev. D 90, 016009 (2014)
10.1103/PhysRevD.90.016009
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In the so-called ``yukawaon" model, the (effective) Yukawa coupling constants $Y_f^{eff}$ are given by vacuum expectation values (VEVs) of scalars $Y_f$ (yukawaons) with $3\times 3$ components. In the present model, all of the VEV matrices $\langle Y_f \rangle$ are given by a bilinear form of VEVs of flavons $\Phi_f$...
[ { "created": "Thu, 1 May 2014 01:04:45 GMT", "version": "v1" }, { "created": "Mon, 23 Jun 2014 01:55:49 GMT", "version": "v2" } ]
2015-06-10
[ [ "Koide", "Yoshio", "" ], [ "Nishiura", "Hiroyuki", "" ] ]
In the so-called ``yukawaon" model, the (effective) Yukawa coupling constants $Y_f^{eff}$ are given by vacuum expectation values (VEVs) of scalars $Y_f$ (yukawaons) with $3\times 3$ components. In the present model, all of the VEV matrices $\langle Y_f \rangle$ are given by a bilinear form of VEVs of flavons $\Phi_f$, ...
hep-ph/0406183
Ana Babic
A. Babic, B. Guberina, B. Melic, H. Stefancic
Cabibbo-suppressed decays of the Omega_c^0 - feedback to the Xi_c^+ lifetime
9 pages, 3 figures
Phys.Rev. D70 (2004) 117501
10.1103/PhysRevD.70.117501
null
hep-ph hep-ex
null
We investigate a possible background of the type Omega_c^0 --> Xi_c^+ pi^- to the CLEO Xi_c^+ lifetime measurement. This decay mode may lead to an overestimate of the Xi_c^+ decay length and, therefore, increase the measured Xi_c^+ lifetime. The branching ratio Gamma(Omega_c^0 --> Xi_c^+ pi^-)/Gamma(Omega_c^0 --> Ome...
[ { "created": "Wed, 16 Jun 2004 20:41:38 GMT", "version": "v1" } ]
2009-11-10
[ [ "Babic", "A.", "" ], [ "Guberina", "B.", "" ], [ "Melic", "B.", "" ], [ "Stefancic", "H.", "" ] ]
We investigate a possible background of the type Omega_c^0 --> Xi_c^+ pi^- to the CLEO Xi_c^+ lifetime measurement. This decay mode may lead to an overestimate of the Xi_c^+ decay length and, therefore, increase the measured Xi_c^+ lifetime. The branching ratio Gamma(Omega_c^0 --> Xi_c^+ pi^-)/Gamma(Omega_c^0 --> Omega...
2002.03262
Xin-Qiang Li
Guido Bell, Martin Beneke, Tobias Huber and Xin-Qiang Li
Two-loop non-leptonic penguin amplitude in QCD factorization
45 pages, 9 figures, 6 tables. Expressions for the 2-loop hard-scattering kernels before and after the convolution with the light-meson LCDA are attached in electronic form to the source of the present submission
null
10.1007/JHEP04(2020)055
TUM-HEP-1250/20, SI-HEP-2019-17, QFET-2019-12
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We complete the calculation of the QCD penguin amplitude at next-to-next-to-leading order in the QCD factorization approach to non-leptonic B-meson decays. This provides the last missing piece in the computation of the QCD correction to direct CP asymmetries at leading power in the heavy-quark expansion.
[ { "created": "Sun, 9 Feb 2020 01:33:47 GMT", "version": "v1" } ]
2020-05-20
[ [ "Bell", "Guido", "" ], [ "Beneke", "Martin", "" ], [ "Huber", "Tobias", "" ], [ "Li", "Xin-Qiang", "" ] ]
We complete the calculation of the QCD penguin amplitude at next-to-next-to-leading order in the QCD factorization approach to non-leptonic B-meson decays. This provides the last missing piece in the computation of the QCD correction to direct CP asymmetries at leading power in the heavy-quark expansion.
1601.08081
Alan D. Martin
V.A. Khoze, A.D. Martin, M.G. Ryskin and V.A. Schegelsky
Two scales in Bose-Einstein correlations
7 pages, 1 figure
null
10.1140/epjc/s10052-016-4055-3
IPPP/16/08, DCPT/16/16
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We argue that the secondaries produced in high energy hadron collisions are emitted by small size sources distributed over a much larger area in impact parameter space occupied by the interaction amplitude. That is, Bose-Einstein correlation of two emitted identical particles should be described by a `two-radii' para...
[ { "created": "Fri, 29 Jan 2016 12:39:03 GMT", "version": "v1" } ]
2016-05-04
[ [ "Khoze", "V. A.", "" ], [ "Martin", "A. D.", "" ], [ "Ryskin", "M. G.", "" ], [ "Schegelsky", "V. A.", "" ] ]
We argue that the secondaries produced in high energy hadron collisions are emitted by small size sources distributed over a much larger area in impact parameter space occupied by the interaction amplitude. That is, Bose-Einstein correlation of two emitted identical particles should be described by a `two-radii' parame...
hep-ph/9409453
Matthias Neubert
Matthias Neubert
Higher-Order Perturbative Corrections to $b\to c$ Transitions at Zero Recoil
9 pages LaTeX, CERN-TH.7454/94
Phys.Lett.B341:367-371,1995
10.1016/0370-2693(94)01326-8
null
hep-ph
null
We estimate the two-loop perturbative corrections to zero-recoil matrix elements of the flavour-changing currents $\bar c\,\gamma^\mu b$ and $\bar c\,\gamma^\mu\gamma_5\,b$ by calculating the terms of order $n_f\,\alpha_s^2$ and substituting the dependence on the number of flavours by the first coefficient of the $\b...
[ { "created": "Fri, 30 Sep 1994 11:39:58 GMT", "version": "v1" } ]
2011-01-25
[ [ "Neubert", "Matthias", "" ] ]
We estimate the two-loop perturbative corrections to zero-recoil matrix elements of the flavour-changing currents $\bar c\,\gamma^\mu b$ and $\bar c\,\gamma^\mu\gamma_5\,b$ by calculating the terms of order $n_f\,\alpha_s^2$ and substituting the dependence on the number of flavours by the first coefficient of the $\bet...
hep-ph/9305230
Daniel Ng
Ernest Ma and Daniel Ng
New Supersymmetric Option for Two Higgs Doublets
10 pages, UCRHEP-T107,TRI-PP-93-17(3 figures are appended)
Phys.Rev. D49 (1994) 6164-6167
10.1103/PhysRevD.49.6164
null
hep-ph
null
If the standard electroweak gauge model is embedded in a larger theory which is supersymmetric and the latter breaks down to the former at some mass scale, then the reduced Higgs potential at the electroweak mass scale may differ from that of the well-known minimal supersymmetric extension. Specifically, if the large...
[ { "created": "Fri, 7 May 1993 23:32:23 GMT", "version": "v1" } ]
2009-10-22
[ [ "Ma", "Ernest", "" ], [ "Ng", "Daniel", "" ] ]
If the standard electroweak gauge model is embedded in a larger theory which is supersymmetric and the latter breaks down to the former at some mass scale, then the reduced Higgs potential at the electroweak mass scale may differ from that of the well-known minimal supersymmetric extension. Specifically, if the larger ...
hep-ph/0101353
Abdelhak Djouadi
Aseshkrishna Datta, Abdelhak Djouadi and Jean-Loic Kneur
Probing the SUSY Higgs boson couplings to scalar leptons at high-energy $e^+e^-$ colliders
10 pages, latex, axodraw.sty, 2 psfigures
Phys.Lett. B509 (2001) 299-306
10.1016/S0370-2693(01)00533-0
PM/01-06
hep-ph
null
We discuss the production at $e^+e^-$ colliders of Higgs bosons in association with both the scalar leptons and the lightest neutralinos in the Minimal Supersymmetric extension of the Standard Model. While the rates for associated Higgs production with neutralinos and first/second generation sleptons are rather tiny,...
[ { "created": "Wed, 31 Jan 2001 18:38:46 GMT", "version": "v1" } ]
2009-11-07
[ [ "Datta", "Aseshkrishna", "" ], [ "Djouadi", "Abdelhak", "" ], [ "Kneur", "Jean-Loic", "" ] ]
We discuss the production at $e^+e^-$ colliders of Higgs bosons in association with both the scalar leptons and the lightest neutralinos in the Minimal Supersymmetric extension of the Standard Model. While the rates for associated Higgs production with neutralinos and first/second generation sleptons are rather tiny, t...
1207.7275
George W. S. Hou
George W.-S. Hou
Theory Summary {\large (a Perspective}
9 pages, 3 figures, theory summary talk at FPCP 2012 held at USTC, Hefei, China
null
null
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
This is the Theory Summary of the "Flavor Physics and CP Violation 2012" conference, with emphasis on New Physics. Besides covering the theory part of the conference, we pay attention also to the physics highlights of experimental talks. I then give my perspective on the false "Godot sightings" of the past decade, wi...
[ { "created": "Tue, 31 Jul 2012 15:01:07 GMT", "version": "v1" } ]
2012-08-01
[ [ "Hou", "George W. -S.", "" ] ]
This is the Theory Summary of the "Flavor Physics and CP Violation 2012" conference, with emphasis on New Physics. Besides covering the theory part of the conference, we pay attention also to the physics highlights of experimental talks. I then give my perspective on the false "Godot sightings" of the past decade, with...
hep-ph/0104249
Edward Shuryak
Edward V. Shuryak
Nonperturbative Phenomena and Phases of QCD
Lectures in Schladming winter school 2001, 40 pages
Lect.Notes Phys. 583 (2002) 251-290
null
null
hep-ph
null
Lectures discuss applications of semiclassical methods based on instantons to vacuum structure (chiral symmetry breaking), hadronic structure (various correlation functions), and high energy collisions of hadrons and heavy ions. We discuss phase diagram of hot/dense hadronic matter, and in the last lecture review cur...
[ { "created": "Tue, 24 Apr 2001 16:23:41 GMT", "version": "v1" } ]
2007-05-23
[ [ "Shuryak", "Edward V.", "" ] ]
Lectures discuss applications of semiclassical methods based on instantons to vacuum structure (chiral symmetry breaking), hadronic structure (various correlation functions), and high energy collisions of hadrons and heavy ions. We discuss phase diagram of hot/dense hadronic matter, and in the last lecture review curre...
0708.3905
Inanc Sahin
B. Sahin and I. Sahin
Top Quark Spin Polarization in e \gamma Collision
5 pages, 3 figures
Mod. Phys. Lett. A 23, 519-525 (2008)
10.1142/S021773230802433X
null
hep-ph
null
We investigate the degree of spin polarization of single top quarks in the $e\gamma$ collision via the process $e^{+} \gamma \to t \bar{b} \bar{\nu_{e}}$ with center of mass energies $\sqrt{s}$=0.5, 1 and 1.5 TeV of the parental linear $e^{+}e^{-}$ collider. Dominant spin fractions and spin asymmetries for the variou...
[ { "created": "Wed, 29 Aug 2007 08:37:06 GMT", "version": "v1" } ]
2008-04-02
[ [ "Sahin", "B.", "" ], [ "Sahin", "I.", "" ] ]
We investigate the degree of spin polarization of single top quarks in the $e\gamma$ collision via the process $e^{+} \gamma \to t \bar{b} \bar{\nu_{e}}$ with center of mass energies $\sqrt{s}$=0.5, 1 and 1.5 TeV of the parental linear $e^{+}e^{-}$ collider. Dominant spin fractions and spin asymmetries for the various ...
0708.3620
Larry McLerran
Larry McLerran
Heavy Ion Collisions and New Forms of Matter
Plenary talk presented at PASCOS 2007
AIPConf.Proc.957:117-123,2007
10.1063/1.2823746
null
hep-ph
null
I discuss forms of high energy density matter in QCD. These include the Color Glass Condensate, the Glasma and the Quark Gluon Plasma. They all might be studied in ultra-relativistic heavy ion collisions, nd the Color Glass Condensate might also be probed in electron-hadron collisions. I present the properties of suc...
[ { "created": "Mon, 27 Aug 2007 14:41:49 GMT", "version": "v1" } ]
2008-11-26
[ [ "McLerran", "Larry", "" ] ]
I discuss forms of high energy density matter in QCD. These include the Color Glass Condensate, the Glasma and the Quark Gluon Plasma. They all might be studied in ultra-relativistic heavy ion collisions, nd the Color Glass Condensate might also be probed in electron-hadron collisions. I present the properties of such ...
1003.3426
Ashot Gasparyan
A. Gasparyan and M.F.M. Lutz
Photon- and pion-nucleon interactions in a unitary and causal effective field theory based on the chiral Lagrangian
76 pages, 23 figures, one additional figure, Tables 4,5 and Figure 4 are corrected, a few references and comments are added. The role of higher partial waves in pion photoproduction is clarified
Nucl.Phys.A848:126-182,2010
10.1016/j.nuclphysa.2010.08.006
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present and apply a novel scheme for studying photon- and pion-nucleon scattering beyond the threshold region. Partial-wave amplitudes for the $\gamma\, N$ and $\pi N$ states are obtained by an analytic extrapolation of subthreshold reaction amplitudes computed in chiral perturbation theory, where the constraints ...
[ { "created": "Wed, 17 Mar 2010 18:37:29 GMT", "version": "v1" }, { "created": "Fri, 23 Jul 2010 13:43:40 GMT", "version": "v2" } ]
2015-03-13
[ [ "Gasparyan", "A.", "" ], [ "Lutz", "M. F. M.", "" ] ]
We present and apply a novel scheme for studying photon- and pion-nucleon scattering beyond the threshold region. Partial-wave amplitudes for the $\gamma\, N$ and $\pi N$ states are obtained by an analytic extrapolation of subthreshold reaction amplitudes computed in chiral perturbation theory, where the constraints se...
hep-ph/9609239
Carlo Ewerz
J. Bartels, C. Ewerz, H. Lotter, M. Wuesthoff, M. Diehl
Quark-Antiquark Jets in DIS Diffractive Dissociation
6 pages, latex, 6 figures included (needs epsfig.sty), To appear in the proceedings of the Workshop "Future Physics at HERA"
null
10.1016/0370-2693(96)00412-1
null
hep-ph
null
We report on investigations concerning the production of large transverse momentum jets in DIS diffractive dissociation. These processes constitute a new class of events that allow for a clean test of perturbative QCD and of the hard (perturbative) pomeron picture. The measurement of the corresponding cross sections ...
[ { "created": "Tue, 3 Sep 1996 16:17:54 GMT", "version": "v1" } ]
2009-10-28
[ [ "Bartels", "J.", "" ], [ "Ewerz", "C.", "" ], [ "Lotter", "H.", "" ], [ "Wuesthoff", "M.", "" ], [ "Diehl", "M.", "" ] ]
We report on investigations concerning the production of large transverse momentum jets in DIS diffractive dissociation. These processes constitute a new class of events that allow for a clean test of perturbative QCD and of the hard (perturbative) pomeron picture. The measurement of the corresponding cross sections mi...
hep-ph/0307393
Jose Illana
J.I. Illana, M. Masip
Quasi-Degenerate Neutrinos and Lepton Flavour Violation in Supersymmetric Models
13 pages, 4 figures. v3: introduction and discussion improved and references added; version to appear in EPJC
Eur.Phys.J.C35:365-372,2004
10.1140/epjc/s2004-01816-3
UG-FT-152/03, CAFPE-22/03
hep-ph
null
In supersymmetric (SUSY) models the misalignment between fermion and sfermion families introduces unsuppressed flavor-changing processes. Even if the mass parameters are chosen to give no flavor violation, family dependent radiative corrections make this adjustment not stable. We analyze the rate of l --> l' gamma in...
[ { "created": "Thu, 31 Jul 2003 16:21:38 GMT", "version": "v1" }, { "created": "Tue, 21 Oct 2003 17:26:29 GMT", "version": "v2" }, { "created": "Thu, 25 Mar 2004 17:51:53 GMT", "version": "v3" } ]
2014-11-17
[ [ "Illana", "J. I.", "" ], [ "Masip", "M.", "" ] ]
In supersymmetric (SUSY) models the misalignment between fermion and sfermion families introduces unsuppressed flavor-changing processes. Even if the mass parameters are chosen to give no flavor violation, family dependent radiative corrections make this adjustment not stable. We analyze the rate of l --> l' gamma in S...
1403.3287
Mohamed Mohamed
M. Abu-Shady
Linear Sigma Model at Finite Temperature and Baryonic Chemical Potential Using the Midpoint Technique
9 pages, 6 figures
Physics Research International, Volume 2014, 435023, (2014)
10.1155/2014/435023
null
hep-ph
http://creativecommons.org/licenses/by/3.0/
A baryonic chemical potential is included in the linear sigma model at finite temperature. The effective mesonic potential is numerically calculated using the midpoint technique. The meson masses are investigated as functions of the temperature at fixed value of baryonic chemical potential. The pressure and energy de...
[ { "created": "Thu, 13 Mar 2014 14:54:03 GMT", "version": "v1" } ]
2014-03-14
[ [ "Abu-Shady", "M.", "" ] ]
A baryonic chemical potential is included in the linear sigma model at finite temperature. The effective mesonic potential is numerically calculated using the midpoint technique. The meson masses are investigated as functions of the temperature at fixed value of baryonic chemical potential. The pressure and energy dens...
2206.04965
Christophe Royon
C. Baldenegro, P. Gonzalez Duran, M. Klasen, C. Royon, J. Salomon
Jets separated by a large pseudorapidity gap at the Tevatron and at the LHC
null
null
10.1007/JHEP08(2022)250
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a phenomenological analysis of events with two high transverse momentum ($p_T$) jets separated by a large (pseudo-)rapidity interval void of particle activity, also known as jet-gap-jet events. In the limit where the collision energy $\sqrt{s}$ is much larger than any other momentum scale, the jet-gap-jet ...
[ { "created": "Fri, 10 Jun 2022 09:38:21 GMT", "version": "v1" }, { "created": "Tue, 23 Aug 2022 07:20:13 GMT", "version": "v2" } ]
2022-09-14
[ [ "Baldenegro", "C.", "" ], [ "Duran", "P. Gonzalez", "" ], [ "Klasen", "M.", "" ], [ "Royon", "C.", "" ], [ "Salomon", "J.", "" ] ]
We present a phenomenological analysis of events with two high transverse momentum ($p_T$) jets separated by a large (pseudo-)rapidity interval void of particle activity, also known as jet-gap-jet events. In the limit where the collision energy $\sqrt{s}$ is much larger than any other momentum scale, the jet-gap-jet pr...
1110.6435
Diego Aristizabal
D. Aristizabal Sierra
One-loop finite corrections to seesaw neutrino masses
3 pages, 2 figures. Prepared for the proceedings of the International Europhysics Conference on High Energy Physics, EPS-HEP 2011, Grenoble, France, July 21-27 2011
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In the standard seesaw model, finite corrections to the neutrino mass matrix arise from one-loop self-energy diagrams mediated by heavy neutrinos. We discuss the impact that these corrections may have on the different entries of the tree-level effective neutrino mass matrix, paying special attention to their dependen...
[ { "created": "Fri, 28 Oct 2011 19:56:51 GMT", "version": "v1" } ]
2011-10-31
[ [ "Sierra", "D. Aristizabal", "" ] ]
In the standard seesaw model, finite corrections to the neutrino mass matrix arise from one-loop self-energy diagrams mediated by heavy neutrinos. We discuss the impact that these corrections may have on the different entries of the tree-level effective neutrino mass matrix, paying special attention to their dependence...
0901.2245
Mikhail Vysotsky
M.I.Vysotsky
FSI and rare B decays: B-->\pi\pi, \rho\rho
talk at PANIC08, Eilat, Israel
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The final state interactions (FSI) model, in which soft rescattering of low mass intermediate states dominate, is suggested. It explains why the strong interaction phases are large in the $B_d\to\pi\pi$ channel and are considerably smaller in the $B_d\to\rho\rho$ one.
[ { "created": "Thu, 15 Jan 2009 13:56:23 GMT", "version": "v1" } ]
2009-01-16
[ [ "Vysotsky", "M. I.", "" ] ]
The final state interactions (FSI) model, in which soft rescattering of low mass intermediate states dominate, is suggested. It explains why the strong interaction phases are large in the $B_d\to\pi\pi$ channel and are considerably smaller in the $B_d\to\rho\rho$ one.
hep-ph/0205037
Jamal Jalilian-Marian
Francois Gelis and Jamal Jalilian-Marian
Photon production in high energy proton-nucleus collisions
15 pages, 2 figures
Phys.Rev. D66 (2002) 014021
10.1103/PhysRevD.66.014021
BNL-NT-02/9, LPT-ORSAY-02/40
hep-ph nucl-th
null
We calculate the photon production cross-section in $pA$ collisions under the assumption that the nucleus has reached the saturation regime, while the proton can be described by the standard parton distribution functions. We show that due to the strong classical field $O(1/g)$ of the nucleus, bremsstrahlung diagrams ...
[ { "created": "Fri, 3 May 2002 20:01:56 GMT", "version": "v1" } ]
2009-11-07
[ [ "Gelis", "Francois", "" ], [ "Jalilian-Marian", "Jamal", "" ] ]
We calculate the photon production cross-section in $pA$ collisions under the assumption that the nucleus has reached the saturation regime, while the proton can be described by the standard parton distribution functions. We show that due to the strong classical field $O(1/g)$ of the nucleus, bremsstrahlung diagrams be...
2205.09131
V\'ictor Enguita-Vileta
Victor Enguita Vileta, Belen Gavela, Rachel Houtz, Pablo Quilez
Discrete Goldstone Bosons
44 pages, 13 figures
Phys. Rev. D 107, 035009 (2023)
10.1103/PhysRevD.107.035009
DESY-22-082, IFT-UAM/CSIC-20-144, FTUAM-20-21, IPPP/22/31
hep-ph hep-th
http://creativecommons.org/licenses/by/4.0/
Exact discrete symmetries, if non-linearly realized, can reduce the ultraviolet sensitivity of a given theory. The scalars stemming from spontaneous symmetry breaking are massive without breaking the discrete symmetry, and those masses are protected from divergent quadratic corrections. This is in contrast to non-lin...
[ { "created": "Wed, 18 May 2022 18:00:04 GMT", "version": "v1" }, { "created": "Wed, 15 Feb 2023 17:25:43 GMT", "version": "v2" } ]
2023-02-16
[ [ "Vileta", "Victor Enguita", "" ], [ "Gavela", "Belen", "" ], [ "Houtz", "Rachel", "" ], [ "Quilez", "Pablo", "" ] ]
Exact discrete symmetries, if non-linearly realized, can reduce the ultraviolet sensitivity of a given theory. The scalars stemming from spontaneous symmetry breaking are massive without breaking the discrete symmetry, and those masses are protected from divergent quadratic corrections. This is in contrast to non-linea...
1403.2756
David M. Straub
Matthias K\"onig, Matthias Neubert and David M. Straub
Dipole operator constraints on composite Higgs models
30 pages, 2 figures, 11 tables. v3: Misprints in table 8 corrected. Numerics and conclusions unchanged
Eur.Phys.J. C74 (2014) 7, 2945
10.1140/epjc/s10052-014-2945-9
MITP/14-017
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Flavour- and CP-violating electromagnetic or chromomagnetic dipole operators in the quark sector are generated in a large class of new physics models and are strongly constrained by measurements of the neutron electric dipole moment and observables sensitive to flavour-changing neutral currents, such as the $B\to X_s...
[ { "created": "Tue, 11 Mar 2014 21:00:16 GMT", "version": "v1" }, { "created": "Wed, 19 Mar 2014 10:47:15 GMT", "version": "v2" }, { "created": "Fri, 18 Dec 2015 08:29:17 GMT", "version": "v3" } ]
2015-12-21
[ [ "König", "Matthias", "" ], [ "Neubert", "Matthias", "" ], [ "Straub", "David M.", "" ] ]
Flavour- and CP-violating electromagnetic or chromomagnetic dipole operators in the quark sector are generated in a large class of new physics models and are strongly constrained by measurements of the neutron electric dipole moment and observables sensitive to flavour-changing neutral currents, such as the $B\to X_s\g...
2011.14668
Suman Kumbhakar
Ashutosh Kumar Alok, Suman Kumbhakar, Jyoti Saini, S Uma Sankar
New physics in $b\rightarrow se^+e^-$: A model independent analysis
Accepted to publish in Nucl. Phys. B
Nucl. Phys. B 967 (2021) 115419
10.1016/j.nuclphysb.2021.115419
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
The lepton universality violating flavor ratios $R_K/R_{K^*}$ indicate new physics either in $b \to s \mu^+ \mu^-$ or in $b \to s e^+ e^-$ or in both. If the new physics is only $b \to s e^+ e^-$ transition, the corresponding new physics operators, in principle, can have any Lorentz structure. In this work, we perfor...
[ { "created": "Mon, 30 Nov 2020 10:25:26 GMT", "version": "v1" }, { "created": "Tue, 27 Apr 2021 04:33:58 GMT", "version": "v2" } ]
2021-05-12
[ [ "Alok", "Ashutosh Kumar", "" ], [ "Kumbhakar", "Suman", "" ], [ "Saini", "Jyoti", "" ], [ "Sankar", "S Uma", "" ] ]
The lepton universality violating flavor ratios $R_K/R_{K^*}$ indicate new physics either in $b \to s \mu^+ \mu^-$ or in $b \to s e^+ e^-$ or in both. If the new physics is only $b \to s e^+ e^-$ transition, the corresponding new physics operators, in principle, can have any Lorentz structure. In this work, we perform ...
1706.07331
Francesco Coradeschi
Leandro Cieri, Francesco Coradeschi, Daniel de Florian and Nerina Fidanza
Transverse-momentum resummation for the signal-background interference in the $H \to \gamma\gamma$ channel at the LHC
9 pages, 7 fiugres
Phys. Rev. D 96, 054003 (2017)
10.1103/PhysRevD.96.054003
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present an upgraded calculation of the effects of resonance-continuum interference for the Higgs boson decaying to two photons at the Large Hadron Collider, at next-to-leading order in the strong coupling $\alpha_S$, $O(\alpha_S^3)$, and including transverse-momentum ($q_T$) resummation at next-to-leading logarith...
[ { "created": "Thu, 22 Jun 2017 14:09:32 GMT", "version": "v1" } ]
2017-09-13
[ [ "Cieri", "Leandro", "" ], [ "Coradeschi", "Francesco", "" ], [ "de Florian", "Daniel", "" ], [ "Fidanza", "Nerina", "" ] ]
We present an upgraded calculation of the effects of resonance-continuum interference for the Higgs boson decaying to two photons at the Large Hadron Collider, at next-to-leading order in the strong coupling $\alpha_S$, $O(\alpha_S^3)$, and including transverse-momentum ($q_T$) resummation at next-to-leading logarithmi...
hep-ph/0308153
Peter Zeiler Skands
Torbj\"orn Sj\"ostrand, Leif L\"onnblad, Stephen Mrenna, Peter Skands
PYTHIA 6.3 Physics and Manual
8 + 454 pages
null
null
LU TP 03-38
hep-ph
null
The PYTHIA program can be used to generate high-energy-physics `events', i.e. sets of outgoing particles produced in the interactions between two incoming particles. The objective is to provide as accurate as possible a representation of event properties in a wide range of reactions, with emphasis on those where stro...
[ { "created": "Thu, 14 Aug 2003 17:05:17 GMT", "version": "v1" } ]
2007-05-23
[ [ "Sjöstrand", "Torbjörn", "" ], [ "Lönnblad", "Leif", "" ], [ "Mrenna", "Stephen", "" ], [ "Skands", "Peter", "" ] ]
The PYTHIA program can be used to generate high-energy-physics `events', i.e. sets of outgoing particles produced in the interactions between two incoming particles. The objective is to provide as accurate as possible a representation of event properties in a wide range of reactions, with emphasis on those where strong...
1707.07904
Shao-Feng Ge
Shao-Feng Ge, Werner Rodejohann, Kai Zuber
Half-life Expectations for Neutrinoless Double Beta Decay in Standard and Non-Standard Scenarios
18 pages, 10 figures, and 4 tables
Phys. Rev. D 96, 055019 (2017)
10.1103/PhysRevD.96.055019
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the half-life expectations for neutrinoless double beta decay by applying statistical distributions of neutrino mixing observables, neutrino mass constraints from cosmology and nuclear matrix elements. The analysis is performed in the standard scenario of active Majorana neutrino exchange, when light s...
[ { "created": "Tue, 25 Jul 2017 10:38:28 GMT", "version": "v1" } ]
2017-09-20
[ [ "Ge", "Shao-Feng", "" ], [ "Rodejohann", "Werner", "" ], [ "Zuber", "Kai", "" ] ]
We investigate the half-life expectations for neutrinoless double beta decay by applying statistical distributions of neutrino mixing observables, neutrino mass constraints from cosmology and nuclear matrix elements. The analysis is performed in the standard scenario of active Majorana neutrino exchange, when light ste...
1412.0503
Andrea Beraudo
A. Beraudo, A. De Pace, M. Monteno, M. Nardi, F. Prino
Heavy flavours in high-energy nuclear collisions: quenching, flow and correlations
Proceedings of the conference Hot Quarks 2014
null
10.1088/1742-6596/612/1/012035
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present results for the quenching, elliptic flow and azimuthal correlations of heavy flavour particles in high-energy nucleus-nucleus collisions obtained through the POWLANG transport setup, developed in the past to study the propagation of heavy quarks in the Quark-Gluon Plasma and here extended to include a mode...
[ { "created": "Mon, 1 Dec 2014 15:08:29 GMT", "version": "v1" } ]
2015-06-11
[ [ "Beraudo", "A.", "" ], [ "De Pace", "A.", "" ], [ "Monteno", "M.", "" ], [ "Nardi", "M.", "" ], [ "Prino", "F.", "" ] ]
We present results for the quenching, elliptic flow and azimuthal correlations of heavy flavour particles in high-energy nucleus-nucleus collisions obtained through the POWLANG transport setup, developed in the past to study the propagation of heavy quarks in the Quark-Gluon Plasma and here extended to include a modeli...
1901.02472
J\"urgen Eser
Florian Divotgey, J\"urgen Eser, and Mario Mitter
Dynamical generation of low-energy couplings from quark-meson fluctuations
null
Phys. Rev. D 99, 054023 (2019)
10.1103/PhysRevD.99.054023
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We extend our recent computation of the low-energy limit of the linear O(4) Quark-Meson Model. The present analysis focuses on the transformation of the resulting effective action into a nonlinearly realized effective pion action, whose higher-derivative interaction terms are parametrized by so-called low-energy coup...
[ { "created": "Tue, 8 Jan 2019 19:11:34 GMT", "version": "v1" } ]
2019-04-03
[ [ "Divotgey", "Florian", "" ], [ "Eser", "Jürgen", "" ], [ "Mitter", "Mario", "" ] ]
We extend our recent computation of the low-energy limit of the linear O(4) Quark-Meson Model. The present analysis focuses on the transformation of the resulting effective action into a nonlinearly realized effective pion action, whose higher-derivative interaction terms are parametrized by so-called low-energy coupli...
hep-ph/0003147
Rajiv V. Gavai
R. V. Gavai (TIFR, Mumbai)
Quark-Gluon Plasma: Status of Heavy Ion Physics
11 Pages, LaTeX, Plenary talk given at 6th Workshop in High Energy Physics Phenomenology (WHEPP 6), Chennai (Madras), India, 3-15 Jan 2000 To appear in Pramana, Journal of Physics
Pramana 55:125-135,2000
10.1007/s12043-000-0089-y
TIFR/TH/00-13
hep-ph
null
Lattice quantum chromodynamics (QCD), defined on a discrete space time lattice, leads to a spectacular non-perturbative prediction of a new state of matter, called quark-gluon plasma (QGP), at sufficiently high temperatures or equivalently large energy densities. The experimental programs of CERN, Geneva and BNL, New...
[ { "created": "Wed, 15 Mar 2000 12:53:30 GMT", "version": "v1" } ]
2009-10-31
[ [ "Gavai", "R. V.", "", "TIFR, Mumbai" ] ]
Lattice quantum chromodynamics (QCD), defined on a discrete space time lattice, leads to a spectacular non-perturbative prediction of a new state of matter, called quark-gluon plasma (QGP), at sufficiently high temperatures or equivalently large energy densities. The experimental programs of CERN, Geneva and BNL, New Y...
1005.2841
S. Atag
S. Atag and A.A. Billur
Possibility of Determining $\tau$ Lepton Electromagnetic Moments in ${\gamma\gamma \to \tau^{+}\tau^{-}}$ Process at the CERN-LHC
null
JHEP 1011:060,2010
10.1007/JHEP11(2010)060
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Potential of the LHC to determine the electromagnetic couplings of the $\tau$ lepton is discussed via the process ${\gamma\gamma \to \tau^{+}\tau}^{-}$. Highly improved constraints of the anomalous magnetic and electric dipole moments have been obtained compared to the LEP sensitivity.
[ { "created": "Mon, 17 May 2010 08:48:43 GMT", "version": "v1" }, { "created": "Wed, 27 Oct 2010 08:09:45 GMT", "version": "v2" } ]
2011-03-17
[ [ "Atag", "S.", "" ], [ "Billur", "A. A.", "" ] ]
Potential of the LHC to determine the electromagnetic couplings of the $\tau$ lepton is discussed via the process ${\gamma\gamma \to \tau^{+}\tau}^{-}$. Highly improved constraints of the anomalous magnetic and electric dipole moments have been obtained compared to the LEP sensitivity.
hep-ph/9912550
Johannes Bluemlein
J. Bl\"umlein
On the Relations Between Polarized Structure Functions
7 pages LATEX, 6 style files, to be published in the Proceedings of the 1999 Circum-Pan-Pacific RIKEN Symposium on High Energy Spin Physics, Riken, Japan, November 1999
RIKEN Rev.28:126-129,2000
null
null
hep-ph hep-ex
null
The status of the twist--2 and the twist--3 integral relations between polarized structure functions in deep inelastic scattering for electromagnetic and electroweak interactions is reviewed. One novel integral relation for the twist--3 contributions can be tested in the upcoming high statistics measurements of the s...
[ { "created": "Fri, 31 Dec 1999 06:28:26 GMT", "version": "v1" } ]
2011-04-15
[ [ "Blümlein", "J.", "" ] ]
The status of the twist--2 and the twist--3 integral relations between polarized structure functions in deep inelastic scattering for electromagnetic and electroweak interactions is reviewed. One novel integral relation for the twist--3 contributions can be tested in the upcoming high statistics measurements of the str...
hep-ph/0006042
Martin Maul
Johan Bijnens and Martin Maul
Large Extra Dimensions in Rare Decays
11 pages, 3 figures, LaTeX, minor stylistic changes, version to be published in JHEP
JHEP 0010 (2000) 003
10.1088/1126-6708/2000/10/003
LU TP 00-25
hep-ph
null
The prospect of experimental verification of the large extra dimension scenario in rare decays is discussed. The case of J/\Psi and \Upsilon to photon + missing energy is calculated in detail, and it is shown that the limit on the compactification scale M_S lies at present in the ten GeV range. In contrast to the qua...
[ { "created": "Mon, 5 Jun 2000 08:41:48 GMT", "version": "v1" }, { "created": "Fri, 14 Jul 2000 12:18:57 GMT", "version": "v2" }, { "created": "Mon, 13 Nov 2000 08:34:26 GMT", "version": "v3" } ]
2009-10-31
[ [ "Bijnens", "Johan", "" ], [ "Maul", "Martin", "" ] ]
The prospect of experimental verification of the large extra dimension scenario in rare decays is discussed. The case of J/\Psi and \Upsilon to photon + missing energy is calculated in detail, and it is shown that the limit on the compactification scale M_S lies at present in the ten GeV range. In contrast to the quark...
hep-ph/9208217
Ghosh
Tarun Souradeep and Varun Sahni
Density Perturbations,Gravity Waves and the Cosmic Microwave Background
10 Pages. (5 Figures available on request.) IUCAA -07-92
Mod.Phys.Lett. A7 (1992) 3541-3552
10.1142/S0217732392002950
null
hep-ph astro-ph
null
We asses the contribution to the observed large scale anisotropy of the cosmic microwave background radiation, arising from both gravity waves as well as adiabatic density perturbations, generated by a common inflationary mechanism in the early Universe. We find that for inflationary models predicting power law pri...
[ { "created": "Mon, 10 Aug 1992 14:11:58 GMT", "version": "v1" } ]
2009-10-22
[ [ "Souradeep", "Tarun", "" ], [ "Sahni", "Varun", "" ] ]
We asses the contribution to the observed large scale anisotropy of the cosmic microwave background radiation, arising from both gravity waves as well as adiabatic density perturbations, generated by a common inflationary mechanism in the early Universe. We find that for inflationary models predicting power law primord...
0905.4080
Matthias Burkardt
Matthias Burkardt (NMSU/Jefferson Lab)
GPDs and DVCS with Positrons
5 pages, 2 figures, invited talk at `Workshop on Positrons at Jefferson Lab'
null
10.1063/1.3232029
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The beam charge asymmetry helps to isolate the real part of the deeply virtual Compton scattering (DVCS) amplitude. It is discussed what information can be gained both from the real and imaginary part of the DVCS amplitude.
[ { "created": "Mon, 25 May 2009 20:23:48 GMT", "version": "v1" } ]
2015-05-13
[ [ "Burkardt", "Matthias", "", "NMSU/Jefferson Lab" ] ]
The beam charge asymmetry helps to isolate the real part of the deeply virtual Compton scattering (DVCS) amplitude. It is discussed what information can be gained both from the real and imaginary part of the DVCS amplitude.
1912.12155
Marco Zanetti
Raffaele Tito D'Agnolo, Gaia Grosso, Maurizio Pierini, Andrea Wulzer and Marco Zanetti
Learning Multivariate New Physics
null
null
null
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We discuss a method that employs a multilayer perceptron to detect deviations from a reference model in large multivariate datasets. Our data analysis strategy does not rely on any prior assumption on the nature of the deviation. It is designed to be sensitive to small discrepancies that arise in datasets dominated b...
[ { "created": "Fri, 27 Dec 2019 15:29:22 GMT", "version": "v1" }, { "created": "Wed, 26 Feb 2020 22:32:14 GMT", "version": "v2" }, { "created": "Thu, 23 Sep 2021 15:37:44 GMT", "version": "v3" } ]
2021-09-24
[ [ "D'Agnolo", "Raffaele Tito", "" ], [ "Grosso", "Gaia", "" ], [ "Pierini", "Maurizio", "" ], [ "Wulzer", "Andrea", "" ], [ "Zanetti", "Marco", "" ] ]
We discuss a method that employs a multilayer perceptron to detect deviations from a reference model in large multivariate datasets. Our data analysis strategy does not rely on any prior assumption on the nature of the deviation. It is designed to be sensitive to small discrepancies that arise in datasets dominated by ...
2310.08436
Jingwei Lian
Junjie Cao, Xinglong Jia, Jingwei Lian, Lei Meng
95 GeV Diphoton and $b \bar{b}$ Excesses in the General Next-to-Minimal Supersymmetric Standard Model
34 pages, 11 figures
null
null
null
hep-ph
http://creativecommons.org/licenses/by/4.0/
The CMS and ATLAS collaborations recently published their results searching for light Higgs bosons, using the complete Run 2 data of the LHC. Both reported an excess in the diphoton invariant mass distribution at $m_{\gamma \gamma} \simeq 95.4~{\rm GeV}$ with compatible signal strengths. The combined result correspon...
[ { "created": "Thu, 12 Oct 2023 15:58:58 GMT", "version": "v1" }, { "created": "Fri, 20 Oct 2023 03:33:40 GMT", "version": "v2" } ]
2023-10-23
[ [ "Cao", "Junjie", "" ], [ "Jia", "Xinglong", "" ], [ "Lian", "Jingwei", "" ], [ "Meng", "Lei", "" ] ]
The CMS and ATLAS collaborations recently published their results searching for light Higgs bosons, using the complete Run 2 data of the LHC. Both reported an excess in the diphoton invariant mass distribution at $m_{\gamma \gamma} \simeq 95.4~{\rm GeV}$ with compatible signal strengths. The combined result corresponde...
0805.4735
Arata Yamamoto
Arata Yamamoto, Hideo Suganuma (Kyoto U.), Hideaki Iida (Kyoto U., Yukawa Inst., Kyoto)
Heavy-heavy-light quark potential in two approaches
Talk given at YITP International Symposium: Fundamental Problems in Hot and/or Dense QCD, Kyoto, Japan, 3-6 March 2008
Prog.Theor.Phys.Suppl.174:270-273,2008
10.1143/PTPS.174.270
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We perform the first study about the heavy-heavy-light quark potential in lattice QCD and a potential model. We find that the inter-two-quark confining force is reduced by valence quark motional effects compared to the string tension.
[ { "created": "Fri, 30 May 2008 12:08:22 GMT", "version": "v1" } ]
2009-01-14
[ [ "Yamamoto", "Arata", "", "Kyoto U." ], [ "Suganuma", "Hideo", "", "Kyoto U." ], [ "Iida", "Hideaki", "", "Kyoto U.,\n Yukawa Inst., Kyoto" ] ]
We perform the first study about the heavy-heavy-light quark potential in lattice QCD and a potential model. We find that the inter-two-quark confining force is reduced by valence quark motional effects compared to the string tension.
1205.2486
Kwang Sik Jeong
Kwang Sik Jeong, Yutaro Shoji, Masahiro Yamaguchi
Singlet-doublet Higgs mixing and its implications on the Higgs mass in the PQ-NMSSM
26 pages, 3 figures; published in JHEP
null
10.1007/JHEP09(2012)007
TU-907
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We examine the implications of singlet-doublet Higgs mixing on the properties of a Standard Model (SM)-like Higgs boson within the Peccei-Quinn invariant extension of the NMSSM (PQ-NMSSM). The SM singlet added to the Higgs sector connects the PQ and visible sectors through a PQ-invariant non-renormalizable K\"ahler p...
[ { "created": "Fri, 11 May 2012 11:22:13 GMT", "version": "v1" }, { "created": "Mon, 28 May 2012 12:38:00 GMT", "version": "v2" }, { "created": "Thu, 5 Jul 2012 09:44:13 GMT", "version": "v3" }, { "created": "Thu, 13 Sep 2012 16:31:11 GMT", "version": "v4" } ]
2015-06-05
[ [ "Jeong", "Kwang Sik", "" ], [ "Shoji", "Yutaro", "" ], [ "Yamaguchi", "Masahiro", "" ] ]
We examine the implications of singlet-doublet Higgs mixing on the properties of a Standard Model (SM)-like Higgs boson within the Peccei-Quinn invariant extension of the NMSSM (PQ-NMSSM). The SM singlet added to the Higgs sector connects the PQ and visible sectors through a PQ-invariant non-renormalizable K\"ahler pot...
0802.1758
Naoyuki Haba
Naoyuki Haba
Meta-stable SUSY Breaking Model in Supergravity
13 pages
JHEP0803:059,2008
10.1088/1126-6708/2008/03/059
OU-HET 598/2008
hep-ph
null
We analyze a supersymmetry (SUSY) breaking model proposed by Intriligator, Seiberg and Shih in a supergravity (SUGRA) framework. This is a simple and natural setup which demands neither extra superpotential interactions nor an additional gauge symmetry. In the SUGRA setup, the U(1)R symmetry is explicitly broken by t...
[ { "created": "Wed, 13 Feb 2008 03:52:51 GMT", "version": "v1" }, { "created": "Wed, 12 Mar 2008 12:47:07 GMT", "version": "v2" } ]
2008-11-26
[ [ "Haba", "Naoyuki", "" ] ]
We analyze a supersymmetry (SUSY) breaking model proposed by Intriligator, Seiberg and Shih in a supergravity (SUGRA) framework. This is a simple and natural setup which demands neither extra superpotential interactions nor an additional gauge symmetry. In the SUGRA setup, the U(1)R symmetry is explicitly broken by the...
1504.04016
Brian Batell
Brian Batell, Matthew McCullough
Neutrino Masses from Neutral Top Partners
18 pages, 5 figures; v2: references added, additional discussion of proton decay
Phys. Rev. D 92, 073018 (2015)
10.1103/PhysRevD.92.073018
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present theories of `Natural Neutrinos' in which neutral fermionic top partner fields are simultaneously the right-handed neutrinos (RHN), linking seemingly disparate aspects of the Standard Model structure: a) The RHN top partners are responsible for the observed small neutrino masses, b) They help ameliorate the...
[ { "created": "Wed, 15 Apr 2015 20:00:38 GMT", "version": "v1" }, { "created": "Tue, 4 Aug 2015 09:52:53 GMT", "version": "v2" } ]
2015-11-04
[ [ "Batell", "Brian", "" ], [ "McCullough", "Matthew", "" ] ]
We present theories of `Natural Neutrinos' in which neutral fermionic top partner fields are simultaneously the right-handed neutrinos (RHN), linking seemingly disparate aspects of the Standard Model structure: a) The RHN top partners are responsible for the observed small neutrino masses, b) They help ameliorate the t...
2209.00916
Zhao Xin
C. Giunti, Y.F. Li, C.A. Ternes, O. Tyagi, Z.Xin
Gallium Anomaly: Critical View from the Global Picture of $\nu_{e}$ and $\bar\nu_{e}$ Disappearance
20 pages, 10 figures. With more discussions, version accepted for publication at Journal of High Energy Physics
null
10.1007/JHEP10(2022)164
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The significance of the Gallium Anomaly, from the BEST, GALLEX, and SAGE radioactive source experiments, is quantified using different theoretical calculations of the neutrino detection cross section, and its explanation due to neutrino oscillations is compared with the bounds from the analyses of reactor rate and sp...
[ { "created": "Fri, 2 Sep 2022 09:50:50 GMT", "version": "v1" }, { "created": "Fri, 16 Sep 2022 16:03:08 GMT", "version": "v2" }, { "created": "Tue, 1 Nov 2022 13:02:10 GMT", "version": "v3" } ]
2022-11-09
[ [ "Giunti", "C.", "" ], [ "Li", "Y. F.", "" ], [ "Ternes", "C. A.", "" ], [ "Tyagi", "O.", "" ], [ "Xin", "Z.", "" ] ]
The significance of the Gallium Anomaly, from the BEST, GALLEX, and SAGE radioactive source experiments, is quantified using different theoretical calculations of the neutrino detection cross section, and its explanation due to neutrino oscillations is compared with the bounds from the analyses of reactor rate and spec...
hep-ph/9604351
Paolo Nason
S. Catani, M.L. Mangano, P. Nason and L. Trentadue
The Resummation of Soft Gluon in Hadronic Collisions
45 pages, Latex, epsfig, 10 figures. Minor corrections to text, notation and references. The previously quoted HERAb NLO bottom production cross section was wrong, and it has been fixed. Accepted for Publication on Nucl. Phys. B
Nucl.Phys. B478 (1996) 273-310
10.1016/0550-3213(96)00399-9
CERN-TH/96-86
hep-ph
null
We compute the effects of soft gluon resummation for the production of high mass systems in hadronic collisions. We carefully analyse the growth of the perturbative expansion coefficients of the resummation formula. We propose an expression consistent with the known leading and next-to-leading resummation results, in...
[ { "created": "Thu, 18 Apr 1996 10:45:17 GMT", "version": "v1" }, { "created": "Mon, 29 Jul 1996 09:52:42 GMT", "version": "v2" } ]
2009-10-28
[ [ "Catani", "S.", "" ], [ "Mangano", "M. L.", "" ], [ "Nason", "P.", "" ], [ "Trentadue", "L.", "" ] ]
We compute the effects of soft gluon resummation for the production of high mass systems in hadronic collisions. We carefully analyse the growth of the perturbative expansion coefficients of the resummation formula. We propose an expression consistent with the known leading and next-to-leading resummation results, in w...
hep-ph/9701387
Tilo Wettig
T. Wettig, T. Guhr, A. Sch\"afer, and H. A. Weidenm\"uller
The chiral phase transition, random matrix models, and lattice data
added a reference and a comment to the model in Section 3
null
null
null
hep-ph
null
We present two pieces of evidence in support of the conjecture that the microscopic spectral density of the Dirac operator is a universal quantity. First, we compare lattice data to predictions from random matrix theory. Second, we show that the functional form of the microscopic spectral correlations remains unchang...
[ { "created": "Mon, 27 Jan 1997 15:39:05 GMT", "version": "v1" }, { "created": "Wed, 5 Feb 1997 12:52:23 GMT", "version": "v2" } ]
2009-09-25
[ [ "Wettig", "T.", "" ], [ "Guhr", "T.", "" ], [ "Schäfer", "A.", "" ], [ "Weidenmüller", "H. A.", "" ] ]
We present two pieces of evidence in support of the conjecture that the microscopic spectral density of the Dirac operator is a universal quantity. First, we compare lattice data to predictions from random matrix theory. Second, we show that the functional form of the microscopic spectral correlations remains unchanged...
2209.07612
Qian Song
Ayres Freitas and Qian Song
Two-Loop Electroweak Corrections with Fermion Loops to $e^+ e^- \to ZH$
6 pages, 3 figures, 1 table. Ref.8 is changed
null
10.1103/PhysRevLett.130.031801
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a complete calculation of the next-to-next-to-leading (NNLO) electroweak corrections involving closed fermion loops to the $e^+ e^- \to ZH$ process. This has been achieved by using a semi-numerical technique for the two-loop vertex and box diagrams, which is based on Feynman parameters and dispersion relat...
[ { "created": "Thu, 15 Sep 2022 21:20:02 GMT", "version": "v1" }, { "created": "Fri, 6 Jan 2023 17:31:55 GMT", "version": "v2" } ]
2023-02-01
[ [ "Freitas", "Ayres", "" ], [ "Song", "Qian", "" ] ]
We present a complete calculation of the next-to-next-to-leading (NNLO) electroweak corrections involving closed fermion loops to the $e^+ e^- \to ZH$ process. This has been achieved by using a semi-numerical technique for the two-loop vertex and box diagrams, which is based on Feynman parameters and dispersion relatio...
1104.0602
Shao-Feng Ge
Shao-Feng Ge, Duane A. Dicus and Wayne W. Repko
Z_2 Symmetry Prediction for the Leptonic Dirac CP Phase
5 pages, 4 figures; Condensed version or PLB with references added; for more details see the previous version
Phys.Lett.B702:220-223,2011
10.1016/j.physletb.2011.06.096
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Model-independent consequences of applying a generalized hidden horizontal Z_2 symmetry to the neutrino mass matrix are explored. The Dirac CP phase delta_D can be expressed in terms of the three mixing angles as 4 c_a s_a c_s s_s s_x cos delta_D = (s^2_s - c^2_s s^2_x) (c^2_a - s^2_a) where the s_i, c_i are sines an...
[ { "created": "Mon, 4 Apr 2011 15:35:18 GMT", "version": "v1" }, { "created": "Thu, 4 Aug 2011 01:11:12 GMT", "version": "v2" } ]
2011-08-11
[ [ "Ge", "Shao-Feng", "" ], [ "Dicus", "Duane A.", "" ], [ "Repko", "Wayne W.", "" ] ]
Model-independent consequences of applying a generalized hidden horizontal Z_2 symmetry to the neutrino mass matrix are explored. The Dirac CP phase delta_D can be expressed in terms of the three mixing angles as 4 c_a s_a c_s s_s s_x cos delta_D = (s^2_s - c^2_s s^2_x) (c^2_a - s^2_a) where the s_i, c_i are sines and ...
hep-ph/0006194
Mrinal Dasgupta
Mrinal Dasgupta
Soft gluon resummation for shape variable distributions in DIS
4 pages, talk presented at the 8th International workshop on Deep Inelastic Scattering and QCD, Liverpool, April 2000
null
null
null
hep-ph
null
We discuss the procedure to resum large logarithms to all orders for DIS event shape variable distributions. Results are described for two variants of the thrust variable, both defined wrt the boson axis in the current hemisphere of the Breit frame, but with different normalisations.
[ { "created": "Fri, 16 Jun 2000 15:17:51 GMT", "version": "v1" } ]
2016-09-06
[ [ "Dasgupta", "Mrinal", "" ] ]
We discuss the procedure to resum large logarithms to all orders for DIS event shape variable distributions. Results are described for two variants of the thrust variable, both defined wrt the boson axis in the current hemisphere of the Breit frame, but with different normalisations.
1904.09382
Stefan H\"oche
Stefan H\"oche, Johannes Krause, Frank Siegert
Multi-jet merging in a variable flavor number scheme
18 pages, 5 figures, 1 table
Phys. Rev. D 100, 014011 (2019)
10.1103/PhysRevD.100.014011
FERMILAB-PUB-19-148-T, MCNET-19-07
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We propose a novel technique for the combination of multi-jet merged simulations in the five-flavor scheme with calculations for the production of b-quark associated final states in the four-flavor scheme. We show the equivalence of our algorithm to the FONLL method at the fixed-order and logarithmic accuracy inheren...
[ { "created": "Sat, 20 Apr 2019 01:03:56 GMT", "version": "v1" } ]
2019-07-17
[ [ "Höche", "Stefan", "" ], [ "Krause", "Johannes", "" ], [ "Siegert", "Frank", "" ] ]
We propose a novel technique for the combination of multi-jet merged simulations in the five-flavor scheme with calculations for the production of b-quark associated final states in the four-flavor scheme. We show the equivalence of our algorithm to the FONLL method at the fixed-order and logarithmic accuracy inherent ...
2203.09561
Admir Greljo
Admir Greljo, Ajdin Palavri\'c, Anders Eller Thomsen
Adding Flavor to the SMEFT
55 pages, no figures, many tables. V2: Numerical estimates for the flavor spurions added. Referances expanded. Published in JHEP
null
10.1007/JHEP10(2022)005
null
hep-ph hep-ex
http://creativecommons.org/licenses/by/4.0/
We study the flavor structure of the lepton and baryon number--conserving dimension-6 operators in the Standard Model effective field theory (SMEFT). Building on the work of [1], we define several well-motivated flavor symmetries and symmetry-breaking patterns that serve as competing hypotheses about the ultraviolet ...
[ { "created": "Thu, 17 Mar 2022 18:49:06 GMT", "version": "v1" }, { "created": "Thu, 25 May 2023 15:54:11 GMT", "version": "v2" } ]
2023-05-26
[ [ "Greljo", "Admir", "" ], [ "Palavrić", "Ajdin", "" ], [ "Thomsen", "Anders Eller", "" ] ]
We study the flavor structure of the lepton and baryon number--conserving dimension-6 operators in the Standard Model effective field theory (SMEFT). Building on the work of [1], we define several well-motivated flavor symmetries and symmetry-breaking patterns that serve as competing hypotheses about the ultraviolet (U...
1106.0375
Sandy S. C. Law
Sandy S. C. Law
Constraints on exotic lepton doublets with minimal coupling to the standard model
18 pages, 1 figure, 2 tables (REVTeX4.1); v2: added discussions in Sec.II, III & IX and new ref. To appear in JHEP. arXiv admin note: text overlap with arXiv:1011.4730
null
10.1007/JHEP02(2012)127
CYCU-HEP-11-07
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the consequences of introducing a set of exotic doublet leptons which couple to the standard model leptons in a minimal way. Through these additional gauge invariant and renormalizable coupling terms, new sources of tree-level flavor changing currents are induced via mixing. In this work, we derive con...
[ { "created": "Thu, 2 Jun 2011 07:04:28 GMT", "version": "v1" }, { "created": "Mon, 13 Feb 2012 06:58:09 GMT", "version": "v2" } ]
2015-05-28
[ [ "Law", "Sandy S. C.", "" ] ]
We investigate the consequences of introducing a set of exotic doublet leptons which couple to the standard model leptons in a minimal way. Through these additional gauge invariant and renormalizable coupling terms, new sources of tree-level flavor changing currents are induced via mixing. In this work, we derive const...
1108.3772
Qiang Zhao
Jia-Jun Wu, Xiao-Hai Liu, Qiang Zhao, and Bing-Song Zou
The puzzle of anomalously large isospin violations in $\eta(1405/1475)\to 3\pi$
4 pages and 7 eps figures; Journal-matched version
Phys. Rev. Lett. 108, 081803 (2012)
10.1103/PhysRevLett.108.081803
null
hep-ph hep-ex nucl-ex nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The BES-III Collaboration recently report the observation of anomalously large isospin violations in $J/\psi\to \gamma\eta(1405/1475) \to \gamma \pi^0 f_0(980)\to \gamma +3\pi$, where the $f_0(980)$ in the $\pi\pi$ invariant mass spectrum appears to be much narrower ($\sim$ 10 MeV) than the peak width ($\sim$50 MeV) ...
[ { "created": "Thu, 18 Aug 2011 14:53:46 GMT", "version": "v1" }, { "created": "Wed, 18 Jan 2012 01:42:52 GMT", "version": "v2" }, { "created": "Thu, 23 Feb 2012 04:50:53 GMT", "version": "v3" } ]
2015-05-30
[ [ "Wu", "Jia-Jun", "" ], [ "Liu", "Xiao-Hai", "" ], [ "Zhao", "Qiang", "" ], [ "Zou", "Bing-Song", "" ] ]
The BES-III Collaboration recently report the observation of anomalously large isospin violations in $J/\psi\to \gamma\eta(1405/1475) \to \gamma \pi^0 f_0(980)\to \gamma +3\pi$, where the $f_0(980)$ in the $\pi\pi$ invariant mass spectrum appears to be much narrower ($\sim$ 10 MeV) than the peak width ($\sim$50 MeV) me...
1509.05919
Kirill Kanshin
K. Kanshin
One loop effective nonlinear Lagrangian with a light H-boson
presented at the 50th Rencontres de Moriond session, "Electroweak interactions and unified theories", La Thuile, March 14-21, 2015
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study one loop structure of the scalar sector of non-linear electroweak chiral Lagrangian (EWChL) with a light (composite) H-boson up to four derivatives. First, we introduce relevant Lagrangian terms in general parametrization of would-be Goldstone modes, taking into account potential and finite mass of the scala...
[ { "created": "Sat, 19 Sep 2015 18:09:01 GMT", "version": "v1" } ]
2015-09-22
[ [ "Kanshin", "K.", "" ] ]
We study one loop structure of the scalar sector of non-linear electroweak chiral Lagrangian (EWChL) with a light (composite) H-boson up to four derivatives. First, we introduce relevant Lagrangian terms in general parametrization of would-be Goldstone modes, taking into account potential and finite mass of the scalar....
hep-ph/9703316
null
M. Suzuki
Removing flavor changing neutral interactions from leptoquark exchange
Latex 10 pages with no figure
null
null
LBNL 40111
hep-ph
null
We look for a mechanism that removes without numerical fine tuning the strong constraint imposed by the flavor changing neutral current interaction of leptoquark exchange. If n x n degenerate leptoquarks couple universally to n generations of quarks and leptons in the weak basis, not only can the neutral current inte...
[ { "created": "Thu, 13 Mar 1997 18:44:45 GMT", "version": "v1" } ]
2007-05-23
[ [ "Suzuki", "M.", "" ] ]
We look for a mechanism that removes without numerical fine tuning the strong constraint imposed by the flavor changing neutral current interaction of leptoquark exchange. If n x n degenerate leptoquarks couple universally to n generations of quarks and leptons in the weak basis, not only can the neutral current intera...
hep-ph/0012009
Dmitri Antonov
Dmitri Antonov (INFN, Pisa)
Confining strings in the Abelian-projected SU(3)-gluodynamics II. 4D-case with $\theta$-term
8 pages, LaTeX2e, no figures, to appear in Europhys. Letters
Europhys.Lett.54:715-721,2001
10.1209/epl/i2001-00311-6
null
hep-ph
null
The generalization of 4D confining string theory to the SU(3)-inspired case is derived. It describes string representation of the Wilson loop in the SU(3)-analogue of compact QED extended by the $\theta$-term. It is shown that although the obtained theory of confining strings differs from that of compact QED, their l...
[ { "created": "Fri, 1 Dec 2000 11:42:31 GMT", "version": "v1" }, { "created": "Wed, 11 Apr 2001 09:20:56 GMT", "version": "v2" } ]
2014-11-17
[ [ "Antonov", "Dmitri", "", "INFN, Pisa" ] ]
The generalization of 4D confining string theory to the SU(3)-inspired case is derived. It describes string representation of the Wilson loop in the SU(3)-analogue of compact QED extended by the $\theta$-term. It is shown that although the obtained theory of confining strings differs from that of compact QED, their low...
1002.2531
Ying Li
Juan Hua, C.s Kim, Ying Li
Annihilation-Type Charmless Radiative Decays of B Meson in Non-universal Z^\prime Model
13 pages, 8 figures
Eur.Phys.J.C69:139-146,2010
10.1140/epjc/s10052-010-1395-2
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study charmless pure annihilation type radiative B decays within the QCD factorization approach. After adding the vertex corrections to the naive factorization approach, we find that the branching ratios of $\bar{B}^0_d\to\phi\gamma$, $\bar{B}^0_s\to\rho^0\gamma$ and $\bar{B}^0_s\to\omega\gamma$ within the standar...
[ { "created": "Fri, 12 Feb 2010 11:52:34 GMT", "version": "v1" } ]
2011-02-09
[ [ "Hua", "Juan", "" ], [ "Kim", "C. s", "" ], [ "Li", "Ying", "" ] ]
We study charmless pure annihilation type radiative B decays within the QCD factorization approach. After adding the vertex corrections to the naive factorization approach, we find that the branching ratios of $\bar{B}^0_d\to\phi\gamma$, $\bar{B}^0_s\to\rho^0\gamma$ and $\bar{B}^0_s\to\omega\gamma$ within the standard ...
1909.04384
Muhammad Jamil Aslam
Arslan Sikandar, M. Jamil Aslam, Ishtiaq Ahmed, and Saba Shafaq
Vertex renormalization and hard scattering symmetry breaking corrections to $B$ to axial vector meson form factors at large recoil
21 pages, 5 figures, Alberta Thy 10-19, A version Accepted for publication in Phys. Rev. D
Phys. Rev. D 100, 056013 (2019)
10.1103/PhysRevD.100.056013
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The symmetries arise due to heavy quark and large energy limit help us to reduce the number of independent form factors in the heavy-to-light $B$-meson decays. It is expected that these symmetry relations are not exact and are broken by the perturbative effects, namely, the vertex corrections and the hard-spectator s...
[ { "created": "Tue, 10 Sep 2019 10:08:56 GMT", "version": "v1" } ]
2019-09-25
[ [ "Sikandar", "Arslan", "" ], [ "Aslam", "M. Jamil", "" ], [ "Ahmed", "Ishtiaq", "" ], [ "Shafaq", "Saba", "" ] ]
The symmetries arise due to heavy quark and large energy limit help us to reduce the number of independent form factors in the heavy-to-light $B$-meson decays. It is expected that these symmetry relations are not exact and are broken by the perturbative effects, namely, the vertex corrections and the hard-spectator sca...
0910.3016
Guang-You Qin
Guang-You Qin, Abhijit Majumder
A pQCD-based description of heavy and light flavor jet quenching
v2, 4 pages, 3 figures
Phys.Rev.Lett.105:262301,2010
10.1103/PhysRevLett.105.262301
null
hep-ph nucl-ex nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a successful description of the medium modification of light and heavy flavor jets within a perturbative QCD (pQCD) based approach. Only the couplings involving hard partons are assumed to be weak. The effect of the medium on a hard parton, per unit time, is encoded in terms of three non-perturbative, rela...
[ { "created": "Fri, 16 Oct 2009 01:55:34 GMT", "version": "v1" }, { "created": "Mon, 20 Sep 2010 17:06:43 GMT", "version": "v2" } ]
2010-12-28
[ [ "Qin", "Guang-You", "" ], [ "Majumder", "Abhijit", "" ] ]
We present a successful description of the medium modification of light and heavy flavor jets within a perturbative QCD (pQCD) based approach. Only the couplings involving hard partons are assumed to be weak. The effect of the medium on a hard parton, per unit time, is encoded in terms of three non-perturbative, relate...
1711.07388
Jean-Nicolas Lang
Ansgar Denner, Jean-Nicolas Lang, Sandro Uccirati
Recola2: REcursive Computation of One-Loop Amplitudes 2
48 pages, 1 figure, matches published version
null
10.1016/j.cpc.2017.11.013
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present the Fortran95 program Recola2 for the perturbative computation of next-to-leading-order transition amplitudes in the Standard Model of particle physics and extended Higgs sectors. New theories are implemented via model files in the 't Hooft-Feynman gauge in the conventional formulation of quantum field the...
[ { "created": "Mon, 20 Nov 2017 15:52:27 GMT", "version": "v1" }, { "created": "Mon, 8 Jan 2018 23:31:02 GMT", "version": "v2" } ]
2018-01-10
[ [ "Denner", "Ansgar", "" ], [ "Lang", "Jean-Nicolas", "" ], [ "Uccirati", "Sandro", "" ] ]
We present the Fortran95 program Recola2 for the perturbative computation of next-to-leading-order transition amplitudes in the Standard Model of particle physics and extended Higgs sectors. New theories are implemented via model files in the 't Hooft-Feynman gauge in the conventional formulation of quantum field theor...
1306.1039
Giulia Ricciardi
Giulia Ricciardi
Magnitudes of V(xb) CKM matrix elements
12 pages, no figs.; in Proceedings of the 14th International Conference on B-Physics at Hadron Machines, April 8-12, 2013, Bologna, Italy
PoS (Beauty 2013) 040
null
null
hep-ph hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We review the current status of the absolute values of the CKM matrix elements V(xb), with particular attention to latest determinations.
[ { "created": "Wed, 5 Jun 2013 10:04:24 GMT", "version": "v1" }, { "created": "Mon, 8 Jul 2013 15:10:50 GMT", "version": "v2" } ]
2013-10-01
[ [ "Ricciardi", "Giulia", "" ] ]
We review the current status of the absolute values of the CKM matrix elements V(xb), with particular attention to latest determinations.
2102.11257
Lingfeng Li
Leo WH Fung, Lingfeng Li, Tao Liu, Hoang Nhan Luu, Yu-Cheng Qiu, S.-H. Henry Tye
Axi-Higgs Cosmology
52 pages, 8 figures. Matches the published version in JCAP
JCAP 08 (2021) 057
10.1088/1475-7516/2021/08/057
null
hep-ph astro-ph.CO hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
If the electroweak Higgs vacuum expectation value $v$ in early universe is $\sim 1 \%$ higher than its present value $v_0=246$ GeV, the $^7$Li puzzle in BBN and the CMB/$\Lambda$CDM tension with late-universe measurements on Hubble parameter are mitigated. We propose a model of an axion coupled to the Higgs field, na...
[ { "created": "Mon, 22 Feb 2021 18:41:02 GMT", "version": "v1" }, { "created": "Tue, 23 Mar 2021 08:06:03 GMT", "version": "v2" }, { "created": "Fri, 3 Sep 2021 15:51:11 GMT", "version": "v3" } ]
2021-09-06
[ [ "Fung", "Leo WH", "" ], [ "Li", "Lingfeng", "" ], [ "Liu", "Tao", "" ], [ "Luu", "Hoang Nhan", "" ], [ "Qiu", "Yu-Cheng", "" ], [ "Tye", "S. -H. Henry", "" ] ]
If the electroweak Higgs vacuum expectation value $v$ in early universe is $\sim 1 \%$ higher than its present value $v_0=246$ GeV, the $^7$Li puzzle in BBN and the CMB/$\Lambda$CDM tension with late-universe measurements on Hubble parameter are mitigated. We propose a model of an axion coupled to the Higgs field, name...
1001.5013
Dmitri Antonov
D. Antonov, J.E.F.T. Ribeiro
Quantifying zigzag motion of quarks
27 pages, 5 figures
Phys.Rev.D81:054027,2010
10.1103/PhysRevD.81.054027
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The quark condensate is calculated in terms of the effective string tension and the constituent quark mass. For 3 colors and 2 light flavors, the constituent mass is bounded from below by the value of 460 MeV. This value is only accessible when the string tension decreases linearly with the Schwinger proper time. For...
[ { "created": "Wed, 27 Jan 2010 20:15:26 GMT", "version": "v1" }, { "created": "Fri, 14 May 2010 18:39:03 GMT", "version": "v2" } ]
2010-05-18
[ [ "Antonov", "D.", "" ], [ "Ribeiro", "J. E. F. T.", "" ] ]
The quark condensate is calculated in terms of the effective string tension and the constituent quark mass. For 3 colors and 2 light flavors, the constituent mass is bounded from below by the value of 460 MeV. This value is only accessible when the string tension decreases linearly with the Schwinger proper time. For t...
2401.00903
LieJuan Li
Lie-Juan Li, Xiao-Wei Sun, Melike Mohamedsedik, Li Wang, Li-Na Hu and Bai-Song Xie
Enhanced pair production in multi-pulse trains electric fields with oscillation
24 pages, 14 figures
null
null
null
hep-ph physics.optics
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
For different alternating-sign multi-pulse trains electric fields with oscillation, the effects of the electric field pulse number and the relative phase of the combined electric field on pair production are investigated by solving quantum Vlasov equation. It is found that the number density of created particles in t...
[ { "created": "Sun, 31 Dec 2023 16:27:58 GMT", "version": "v1" } ]
2024-01-03
[ [ "Li", "Lie-Juan", "" ], [ "Sun", "Xiao-Wei", "" ], [ "Mohamedsedik", "Melike", "" ], [ "Wang", "Li", "" ], [ "Hu", "Li-Na", "" ], [ "Xie", "Bai-Song", "" ] ]
For different alternating-sign multi-pulse trains electric fields with oscillation, the effects of the electric field pulse number and the relative phase of the combined electric field on pair production are investigated by solving quantum Vlasov equation. It is found that the number density of created particles in the...
hep-ph/9603414
Matthias Neubert
Irinel Caprini (Bucharest) and Matthias Neubert (CERN)
Improved Bounds for the Slope and Curvature of $\bar B\to D^{(*)}\ell\bar\nu$ Form Factors
13 pages LaTeX, 2 figures appended
Phys.Lett. B380 (1996) 376-384
10.1016/0370-2693(96)00509-6
CERN-TH/95-255
hep-ph
null
We derive a theoretically allowed domain for the slope $\widehat\varrho^2$ and curvature $\widehat c$ of the physical form factor appearing in the decay $\bar B\to D^*\ell\bar\nu$. Using heavy-quark symmetry, we relate this function to a particular $\bar B \to D$ form factor free of ground-state $B_c$ poles below the...
[ { "created": "Tue, 26 Mar 1996 17:31:10 GMT", "version": "v1" } ]
2009-10-28
[ [ "Caprini", "Irinel", "", "Bucharest" ], [ "Neubert", "Matthias", "", "CERN" ] ]
We derive a theoretically allowed domain for the slope $\widehat\varrho^2$ and curvature $\widehat c$ of the physical form factor appearing in the decay $\bar B\to D^*\ell\bar\nu$. Using heavy-quark symmetry, we relate this function to a particular $\bar B \to D$ form factor free of ground-state $B_c$ poles below the t...
hep-ph/0603132
Yury Bystritskiy
Yu. M. Bystritskiy, E. A. Kuraev, E. Tomasi-Gustafsson
The structure function method applied to polarized and unpolarized electron-proton scattering: a solution of the G_E(p)/G_M(p) discrepancy
22 pages, 8 figures, revision of two-photon exchange K-factor calculation
null
10.1103/PhysRevC.75.015207
null
hep-ph
null
The cross section for polarized and unpolarized electron-proton scattering is calculated taking into account radiative corrections in leading and next-to leading logarithmic approximation. The expression of the cross section is formally similar to the cross section of the Drell-Yan process, where the structure functi...
[ { "created": "Fri, 17 Mar 2006 14:10:30 GMT", "version": "v1" }, { "created": "Mon, 7 Aug 2006 13:43:10 GMT", "version": "v2" } ]
2009-11-11
[ [ "Bystritskiy", "Yu. M.", "" ], [ "Kuraev", "E. A.", "" ], [ "Tomasi-Gustafsson", "E.", "" ] ]
The cross section for polarized and unpolarized electron-proton scattering is calculated taking into account radiative corrections in leading and next-to leading logarithmic approximation. The expression of the cross section is formally similar to the cross section of the Drell-Yan process, where the structure function...
hep-ph/0404273
Richard F. Lebed
Richard F. Lebed, Daniel R. Martin
Hyperon Radiative Decays in the 1/N_c Expansion
4 pages, 1 table, ReVTeX
Phys.Rev. D70 (2004) 057901
10.1103/PhysRevD.70.057901
null
hep-ph
null
Using a recent calculation of transition magnetic moments in the 1/N_c expansion and a calculation showing the suppression of E2/M1 by powers of N_c, we compute the widths for the radiative decays Sigma^* --> Sigma gamma, Sigma^* --> Lambda gamma, and Xi^* --> Xi gamma.
[ { "created": "Thu, 29 Apr 2004 18:50:31 GMT", "version": "v1" } ]
2009-11-10
[ [ "Lebed", "Richard F.", "" ], [ "Martin", "Daniel R.", "" ] ]
Using a recent calculation of transition magnetic moments in the 1/N_c expansion and a calculation showing the suppression of E2/M1 by powers of N_c, we compute the widths for the radiative decays Sigma^* --> Sigma gamma, Sigma^* --> Lambda gamma, and Xi^* --> Xi gamma.
2110.12512
Manfred Kraus
Manfred Kraus
Parton shower effects in $t\bar{t}W^\pm$ production at NLO QCD
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 selection of results from our recent study of $pp\to t\bar{t}W^\pm$ production matched to partons showers at NLO QCD at the LHC. Theoretical predictions are obtained at perturbative orders $\mathcal{O}(\alpha_s^3\alpha)$ and $\mathcal{O}(\alpha_s\alpha^3)$, where the different contributions are studied f...
[ { "created": "Sun, 24 Oct 2021 19:29:10 GMT", "version": "v1" } ]
2021-10-26
[ [ "Kraus", "Manfred", "" ] ]
We present a selection of results from our recent study of $pp\to t\bar{t}W^\pm$ production matched to partons showers at NLO QCD at the LHC. Theoretical predictions are obtained at perturbative orders $\mathcal{O}(\alpha_s^3\alpha)$ and $\mathcal{O}(\alpha_s\alpha^3)$, where the different contributions are studied fir...
0809.2395
Sven Heinemeyer
S. Heinemeyer
How To Determine SUSY Mass Scales Now
6 pages, 6 figures, plenary talk given at SUSY08, Seoul, Korea
AIP Conf.Proc.1078:57-62,2009
10.1063/1.3052033
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Currently available experimental data from electroweak precision observables (EWPO), B-physics observables (BPO) and cosmological data can be combined to extract the preferred value of SUSY mass scales. We review recent results on the predictions of the masses of supersymmetric particles and the indirect determinatio...
[ { "created": "Sun, 14 Sep 2008 13:05:36 GMT", "version": "v1" } ]
2009-02-02
[ [ "Heinemeyer", "S.", "" ] ]
Currently available experimental data from electroweak precision observables (EWPO), B-physics observables (BPO) and cosmological data can be combined to extract the preferred value of SUSY mass scales. We review recent results on the predictions of the masses of supersymmetric particles and the indirect determination ...
hep-ph/0101042
Ian Balitsky
I. Balitsky
High-Energy QCD and Wilson Lines
110 pages, Latex, 40 eps figures, sprocl.sty. To be published in the Boris Ioffe Festschrift ``At the Frontier of Particle Physics/Handbook of QCD'', edited by M. Shifman (World Scientific, Singapore, 2001)
null
10.1142/9789812810458_0030
JLAB-THY-00-44
hep-ph
null
At high energies the particles move very fast so their trajectories can be approximated by straight lines collinear to their velocities. The proper degrees of freedom for the fast gluons moving along the straight lines are the Wilson-line operators -- infinite gauge factors ordered along the straight line. I review t...
[ { "created": "Fri, 5 Jan 2001 03:36:59 GMT", "version": "v1" } ]
2016-11-23
[ [ "Balitsky", "I.", "" ] ]
At high energies the particles move very fast so their trajectories can be approximated by straight lines collinear to their velocities. The proper degrees of freedom for the fast gluons moving along the straight lines are the Wilson-line operators -- infinite gauge factors ordered along the straight line. I review the...
1508.06084
Bingwei Long
Bingwei Long
Chiral dynamics of S-wave baryon resonances
12 pages, 2 figures. The introductory text was modified. Matches the published version
Phys. Rev. D 94, 011503 (2016)
10.1103/PhysRevD.94.011503
CTP-SCU/2015011
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
As the pion mass approaches a critical value $m_\pi^\star$ from below, an $S$-wave resonance crosses pion-baryon threshold and becomes a bound state with arbitrarily small binding energy, thus driving the scattering length to diverge. I explore the consequences of chiral symmetry for the values of $m_\pi$ close to $m...
[ { "created": "Tue, 25 Aug 2015 09:31:52 GMT", "version": "v1" }, { "created": "Fri, 22 Jul 2016 16:01:08 GMT", "version": "v2" } ]
2016-07-27
[ [ "Long", "Bingwei", "" ] ]
As the pion mass approaches a critical value $m_\pi^\star$ from below, an $S$-wave resonance crosses pion-baryon threshold and becomes a bound state with arbitrarily small binding energy, thus driving the scattering length to diverge. I explore the consequences of chiral symmetry for the values of $m_\pi$ close to $m_\...
hep-ph/0211028
Oleg Teryaev
I.V. Anikin, O.V. Teryaev
Genuine twist 3 in exclusive electroproduction of transversely polarized vector mesons
14 pages, 6 ps. figures
Phys.Lett. B554 (2003) 51-63
10.1016/S0370-2693(02)03195-7
CPHT RR075.1102
hep-ph
null
We present the detailed analysis of genuine twist-3 contributions to the exclusive electroproduction amplitude of transversely polarized vector mesons. Using the formalism based on the QCD factorization in the momentum representation we calculated all the genuine twist-3 terms and found the total expression of this a...
[ { "created": "Mon, 4 Nov 2002 16:32:10 GMT", "version": "v1" }, { "created": "Wed, 4 Dec 2002 09:47:14 GMT", "version": "v2" } ]
2009-11-07
[ [ "Anikin", "I. V.", "" ], [ "Teryaev", "O. V.", "" ] ]
We present the detailed analysis of genuine twist-3 contributions to the exclusive electroproduction amplitude of transversely polarized vector mesons. Using the formalism based on the QCD factorization in the momentum representation we calculated all the genuine twist-3 terms and found the total expression of this amp...
hep-ph/0011169
Thomas Schwetz
W. Grimus, T. Schwetz
Elastic $\nu e^-$ scattering of solar neutrinos with electromagnetic moments
4 pages, Talk given by T. Schwetz at EuroConference on Frontiers in Particle Astrophysics and Cosmology, San Feliu de Guixols, Spain, 30 Sept.-5 Oct. 2000
Nucl.Phys.Proc.Suppl. 95 (2001) 169-172
10.1016/S0920-5632(01)01077-5
UWThPh-2000-45
hep-ph
null
We consider the azimuthal asymmetry of the recoil electrons in elastic $\nu e^-$ scattering of solar neutrinos, which can arise if neutrinos have electromagnetic moments and there is a large solar magnetic field. We show that using this effect it is not possible to distinguish between magnetic and electric dipole mom...
[ { "created": "Mon, 13 Nov 2000 15:41:56 GMT", "version": "v1" } ]
2009-10-31
[ [ "Grimus", "W.", "" ], [ "Schwetz", "T.", "" ] ]
We consider the azimuthal asymmetry of the recoil electrons in elastic $\nu e^-$ scattering of solar neutrinos, which can arise if neutrinos have electromagnetic moments and there is a large solar magnetic field. We show that using this effect it is not possible to distinguish between magnetic and electric dipole momen...
1603.03250
Shi-Yuan Li
Yi Jin and Shi-Yuan Li
Large production rate of new $B^0_s \pi^{\pm}$ and $D^{\pm}_s \pi^{\pm}$ states in high energy multi-production process
10 pages, 2 figures
Published in Phys.Rev. D94 (2016) no.1, 014023
10.1103/PhysRevD.94.014023
SDU-TH/2016001
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The production rate of the X(5568) observed by D0 collabotation is quite large and can not be understood by various general hadronization mechanism. We propose an inclusive resonance production formulation to calculate the cross section and extract the value of the effective wave function at origin. Based on these re...
[ { "created": "Thu, 10 Mar 2016 13:09:56 GMT", "version": "v1" }, { "created": "Fri, 11 Mar 2016 06:04:41 GMT", "version": "v2" }, { "created": "Sun, 20 Mar 2016 11:40:49 GMT", "version": "v3" }, { "created": "Mon, 28 Mar 2016 13:11:26 GMT", "version": "v4" }, { "c...
2016-10-17
[ [ "Jin", "Yi", "" ], [ "Li", "Shi-Yuan", "" ] ]
The production rate of the X(5568) observed by D0 collabotation is quite large and can not be understood by various general hadronization mechanism. We propose an inclusive resonance production formulation to calculate the cross section and extract the value of the effective wave function at origin. Based on these resu...
2302.12450
Shu Lin
Shu Lin and Jiayuan Tian
Medium Correction to Gravitational Form Factors
26 pages, 4 figures. Translated from contribution by the same authors to appear in Acta Physica Sinica (in Chinese)
null
null
null
hep-ph nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We generalize the gravitational form factor for chiral fermion in vacuum, which reproduces the well-known spin-vorticity coupling. We also calculate radiative correction to the gravitational form factors in quantum electrodynamics plasma. We find two structures in the form factors contributing to the scattering ampli...
[ { "created": "Fri, 24 Feb 2023 04:34:58 GMT", "version": "v1" } ]
2023-02-27
[ [ "Lin", "Shu", "" ], [ "Tian", "Jiayuan", "" ] ]
We generalize the gravitational form factor for chiral fermion in vacuum, which reproduces the well-known spin-vorticity coupling. We also calculate radiative correction to the gravitational form factors in quantum electrodynamics plasma. We find two structures in the form factors contributing to the scattering amplitu...
1105.4878
Andre Lessa
Genevi\`eve B\'elanger, Sabine Kraml and Andre Lessa
Light Sneutrino Dark Matter at the LHC
25 pages, 16 figures
JHEP 1107:083,2011
10.1007/JHEP07(2011)083
null
hep-ph astro-ph.CO hep-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In supersymmetric (SUSY) models with Dirac neutrino masses, a weak-scale trilinear A-term that is not proportional to the small neutrino Yukawa couplings can induce a sizable mixing between left and right-handed sneutrinos. The lighter sneutrino mass eigenstate can hence become the lightest SUSY particle (LSP) and a ...
[ { "created": "Tue, 24 May 2011 20:00:06 GMT", "version": "v1" }, { "created": "Tue, 31 May 2011 19:12:29 GMT", "version": "v2" } ]
2015-03-19
[ [ "Bélanger", "Geneviève", "" ], [ "Kraml", "Sabine", "" ], [ "Lessa", "Andre", "" ] ]
In supersymmetric (SUSY) models with Dirac neutrino masses, a weak-scale trilinear A-term that is not proportional to the small neutrino Yukawa couplings can induce a sizable mixing between left and right-handed sneutrinos. The lighter sneutrino mass eigenstate can hence become the lightest SUSY particle (LSP) and a vi...
2208.05000
Haowu Duan
Haowu Duan, Alexander Kovner, Vladimir V. Skokov
CGC for Ultra-Peripheral Pb+Pb Collisions at the Large Hadron Collider: a more realistic calculation
35 pages,8 figures
null
10.1007/JHEP12(2022)077
null
hep-ph nucl-th
http://creativecommons.org/licenses/by/4.0/
We provide the first calculation of two-gluon production at mid-rapidity in ultra-peripheral collisions in the Color Glass Condensate framework. To estimate systematic uncertainty associated with poor understanding of the wave function of the nearly real photon, we consider two diametrically different models: the dil...
[ { "created": "Tue, 9 Aug 2022 19:04:27 GMT", "version": "v1" }, { "created": "Thu, 15 Dec 2022 18:37:03 GMT", "version": "v2" } ]
2022-12-28
[ [ "Duan", "Haowu", "" ], [ "Kovner", "Alexander", "" ], [ "Skokov", "Vladimir V.", "" ] ]
We provide the first calculation of two-gluon production at mid-rapidity in ultra-peripheral collisions in the Color Glass Condensate framework. To estimate systematic uncertainty associated with poor understanding of the wave function of the nearly real photon, we consider two diametrically different models: the dilut...
hep-ph/0411304
Klaus Moenig
A. Freitas, K. Moenig
Corrections to Quark Asymmetries at LEP
null
Eur.Phys.J.C40:493,2005
10.1140/epjc/s2005-02164-6
FERMILAB-Pub-04/352-T, DESY 04-225
hep-ph
null
The most precise measurement of the weak mixing angle sin^2(theta) at LEP is from the forward-backward asymmetry e+e- --> bbbar at the Z-pole. In this note the QED and electroweak radiative corrections to obtain the pole asymmetry from the measured asymmetry for b- and c-quarks have been calculated using ZFITTER, whi...
[ { "created": "Tue, 23 Nov 2004 09:00:40 GMT", "version": "v1" } ]
2008-11-26
[ [ "Freitas", "A.", "" ], [ "Moenig", "K.", "" ] ]
The most precise measurement of the weak mixing angle sin^2(theta) at LEP is from the forward-backward asymmetry e+e- --> bbbar at the Z-pole. In this note the QED and electroweak radiative corrections to obtain the pole asymmetry from the measured asymmetry for b- and c-quarks have been calculated using ZFITTER, which...
hep-ph/0509089
Allan Widom
G. Castellani, S. Reucroft, Y.N. Srivastava, J. Swain, A. Widom
Final State Interactions and the Effects of Potentials on Particle Reactions
13 pages 5 *.eps figures plain LaTeX
null
null
null
hep-ph
null
In nuclear physics, it is well known that the electromagnetic (Coulomb) interaction between final state products can drastically effect particle reaction rates. Near thresholds, for example, nuclear alpha decay is suppressed while nuclear beta decay is enhanced by final state Coulomb interactions. Here we discuss hig...
[ { "created": "Fri, 9 Sep 2005 22:53:27 GMT", "version": "v1" } ]
2007-05-23
[ [ "Castellani", "G.", "" ], [ "Reucroft", "S.", "" ], [ "Srivastava", "Y. N.", "" ], [ "Swain", "J.", "" ], [ "Widom", "A.", "" ] ]
In nuclear physics, it is well known that the electromagnetic (Coulomb) interaction between final state products can drastically effect particle reaction rates. Near thresholds, for example, nuclear alpha decay is suppressed while nuclear beta decay is enhanced by final state Coulomb interactions. Here we discuss high ...
2303.13503
Marco Drewes
Marco Drewes, Lei Ming, Isabel Oldengott
LiteBIRD and CMB-S4 Sensitivities to Reheating in Plateau Models of Inflation
86 pages, 43 figures; matches version to appear in JCAP
JCAP 05 (2024) 081
10.1088/1475-7516/2024/05/081
null
hep-ph astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the sensitivity of LiteBIRD and CMB-S4 to the reheating temperature and the inflaton coupling in three types of plateau-potential models of inflation, namely mutated hilltop inflation, radion gauge inflation, and $\alpha$-attractor T models. We first find relations between model parameters and CMB observable...
[ { "created": "Thu, 23 Mar 2023 17:57:46 GMT", "version": "v1" }, { "created": "Fri, 3 May 2024 09:38:25 GMT", "version": "v2" } ]
2024-05-16
[ [ "Drewes", "Marco", "" ], [ "Ming", "Lei", "" ], [ "Oldengott", "Isabel", "" ] ]
We study the sensitivity of LiteBIRD and CMB-S4 to the reheating temperature and the inflaton coupling in three types of plateau-potential models of inflation, namely mutated hilltop inflation, radion gauge inflation, and $\alpha$-attractor T models. We first find relations between model parameters and CMB observables ...
0712.1417
Martin Schumacher
Martin Schumacher
Properties of the $\pi^0$, $\eta$, $\eta'$, $\sigma$, $f_0(980)$ and $a_0(980)$ mesons and their relevance for the polarizabilities of the nucleon
null
Eur.Phys.J.A34:293-301,2007
10.1140/epja/i2007-10506-3
null
hep-ph
null
The signs and values of the two-photon couplings $F_{M\gamma\gamma}$ of mesons $(M)$ and their couplings $g_{MNN}$ to the nucleon as entering into the $t$-channel parts of the difference of the electromagnetic polarizabilities $(\alpha-\beta)$ and the backward angle spin polarizabilities $\gamma_\pi$ are determined. ...
[ { "created": "Mon, 10 Dec 2007 10:00:42 GMT", "version": "v1" } ]
2013-06-26
[ [ "Schumacher", "Martin", "" ] ]
The signs and values of the two-photon couplings $F_{M\gamma\gamma}$ of mesons $(M)$ and their couplings $g_{MNN}$ to the nucleon as entering into the $t$-channel parts of the difference of the electromagnetic polarizabilities $(\alpha-\beta)$ and the backward angle spin polarizabilities $\gamma_\pi$ are determined. Th...
hep-ph/0207098
Daniel Arndt
Daniel Arndt and Patrick J. Fox
Saxion Emission from SN1987A
18 pages, 2 figures; minor changes, typos corrected, version to appear in JHEP
JHEP 0302:036,2003
10.1088/1126-6708/2003/02/036
UW-PT-02-11, NT@UW-02-0014
hep-ph astro-ph nucl-th
null
We study the possibility of emission of the saxion, a superpartner of the axion, from SN1987A. The fact that the observed neutrino pulse from SN1987A is in excellent agreement with the current theory of supernovae places a strong bound on the energy loss into any non-standard model channel, therefore enabling bounds ...
[ { "created": "Sun, 7 Jul 2002 03:15:23 GMT", "version": "v1" }, { "created": "Sat, 22 Feb 2003 01:41:03 GMT", "version": "v2" } ]
2014-11-17
[ [ "Arndt", "Daniel", "" ], [ "Fox", "Patrick J.", "" ] ]
We study the possibility of emission of the saxion, a superpartner of the axion, from SN1987A. The fact that the observed neutrino pulse from SN1987A is in excellent agreement with the current theory of supernovae places a strong bound on the energy loss into any non-standard model channel, therefore enabling bounds to...
1105.4743
Mikhail Vysotsky
M.I.Vysotsky
Coulomb law and energy levels in a superstrong magnetic field
8 pages, 4 figures; presented at Les Rencontres de Physique de la Vallee d'Aoste, La Thuile, Aosta Valley, Italy, February 27 - March 5, 2011
null
10.1393/ncc/i2012-11138-4
null
hep-ph hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Analytical expression for the Coulomb potential in the presence of superstrong magnetic field is derived. Structure of hydrogen levels originating from LLL is analyzed.
[ { "created": "Tue, 24 May 2011 12:22:40 GMT", "version": "v1" } ]
2022-03-02
[ [ "Vysotsky", "M. I.", "" ] ]
Analytical expression for the Coulomb potential in the presence of superstrong magnetic field is derived. Structure of hydrogen levels originating from LLL is analyzed.
hep-ph/0312049
Hilmar Forkel
Hilmar Forkel (IFT - UNESP and U. Heidelberg)
Direct instantons, topological charge screening and QCD glueball sum rules
49 pages, 8 figures
Phys.Rev. D71 (2005) 054008
10.1103/PhysRevD.71.054008
IFT-P.039/2003
hep-ph
null
Nonperturbative Wilson coefficients of the operator product expansion (OPE) for the spin-0 glueball correlators are derived and analyzed. A systematic treatment of the direct instanton contributions is given, based on realistic instanton size distributions and renormalization at the operator scale. In the pseudoscala...
[ { "created": "Wed, 3 Dec 2003 13:44:10 GMT", "version": "v1" } ]
2009-11-10
[ [ "Forkel", "Hilmar", "", "IFT - UNESP and U. Heidelberg" ] ]
Nonperturbative Wilson coefficients of the operator product expansion (OPE) for the spin-0 glueball correlators are derived and analyzed. A systematic treatment of the direct instanton contributions is given, based on realistic instanton size distributions and renormalization at the operator scale. In the pseudoscalar ...
1407.1623
Paolo Torrielli
Paolo Torrielli
Rare Standard Model processes for present and future hadronic colliders
null
null
null
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this talk I present the total cross sections, accurate at the NLO in QCD, for rare Standard-Model hadroproduction processes involving multi-Higgs-boson, multi-electroweak-boson and multi-top-quark final states. The comparison between cross sections at the LHC and at a future circular hadronic collider with up to 1...
[ { "created": "Mon, 7 Jul 2014 08:38:37 GMT", "version": "v1" } ]
2014-07-08
[ [ "Torrielli", "Paolo", "" ] ]
In this talk I present the total cross sections, accurate at the NLO in QCD, for rare Standard-Model hadroproduction processes involving multi-Higgs-boson, multi-electroweak-boson and multi-top-quark final states. The comparison between cross sections at the LHC and at a future circular hadronic collider with up to 100...
hep-ph/9810311
Bing An Li
Bing An Li(Univ. of Kentucky)
Low energy limit of effective chiral theory of mesons
18 pages
null
null
null
hep-ph
null
Based on an effective chiral theory of pseudoscalar, vector, and axial-vector mesons, the coefficients of the chiral perturbation theory are predicted. There is no new parameter in these predictions.
[ { "created": "Fri, 9 Oct 1998 14:41:53 GMT", "version": "v1" } ]
2007-05-23
[ [ "Li", "Bing An", "", "Univ. of Kentucky" ] ]
Based on an effective chiral theory of pseudoscalar, vector, and axial-vector mesons, the coefficients of the chiral perturbation theory are predicted. There is no new parameter in these predictions.
hep-ph/0309025
Alan Kostelecky
Alan Kostelecky and Matthew Mewes
Lorentz and CPT Violation in Neutrinos
25 pages REVTeX
Phys.Rev.D69:016005,2004
10.1103/PhysRevD.69.016005
IUHET 459, August 2003
hep-ph
null
A general formalism is presented for violations of Lorentz and CPT symmetry in the neutrino sector. The effective hamiltonian for neutrino propagation in the presence of Lorentz and CPT violation is derived, and its properties are studied. Possible definitive signals in existing and future neutrino-oscillation experi...
[ { "created": "Tue, 2 Sep 2003 16:03:46 GMT", "version": "v1" } ]
2009-09-25
[ [ "Kostelecky", "Alan", "" ], [ "Mewes", "Matthew", "" ] ]
A general formalism is presented for violations of Lorentz and CPT symmetry in the neutrino sector. The effective hamiltonian for neutrino propagation in the presence of Lorentz and CPT violation is derived, and its properties are studied. Possible definitive signals in existing and future neutrino-oscillation experime...
hep-ph/0410045
Ivan Vitev
Ivan Vitev
Jets in nuclear collisions
Proceedings of the XXXIV International Symposium on Multiparticle Dynamics. To be published in Acta Physica Polonica B. 7 pages, 3 figures
Acta Phys.Polon. B36 (2005) 461-468
null
null
hep-ph nucl-th
null
Ultra-relativistic heavy ion collisions at RHIC and the LHC open exciting new possibilities for jet physics studies in the presence of hot and dense nuclear matter. Recent theoretical advances in understanding the QCD multi-parton dynamics provide a good description of the quenching in the single and double inclusive...
[ { "created": "Sun, 3 Oct 2004 23:38:36 GMT", "version": "v1" } ]
2007-05-23
[ [ "Vitev", "Ivan", "" ] ]
Ultra-relativistic heavy ion collisions at RHIC and the LHC open exciting new possibilities for jet physics studies in the presence of hot and dense nuclear matter. Recent theoretical advances in understanding the QCD multi-parton dynamics provide a good description of the quenching in the single and double inclusive h...