Results 41 to 50 of about 41,470 (209)

Framing energetic top-quark pair production at the LHC

Journal of High Energy Physics, 2021
Top-quark pair production is central to many facets of LHC physics. At leading order, the top and anti-top are produced in a back-to-back topology, however this topology accounts only for a minority of the events with TeV-scale momentum transfer that ...
Fabrizio Caola, Frédéric A. Dreyer, Ross W. McDonald, Gavin P. Salam   +3 more
doaj   +1 more source

Compatibility of a model for the QCD-Pomeron and chiral-symmetry breaking phenomenologies [PDF]

, 1996
The phenomenology of a QCD-Pomeron model based on the exchange of a pair of non-perturbative gluons, i.e. gluon fields with a finite correlation length in the vacuum, is studied in comparison with the phenomenology of QCD chiral symmetry breaking, based ...
A.A Natale, Bernard, Buttner, Buttner, Cornwall, Cornwall, Cornwall, Cornwall, Cornwall, Cudell, Curtis, Dolejsi, Donnachie, Donnachie, Donnachie, Gay Ducati, Gunion, Habel, Halzen, Krein, Landshoff, Lavelle, Levin, Levin, Low, Marenzoni, Marenzoni, Marenzoni, Nussinov, P.S Rodrigues da Silva, Papavassiliou, Povh, Povh, Roberts, Roberts, Stingl, Williams, Zwanziger   +37 more
core   +2 more sources

Study of Bs⟶ϕℓ+ℓ− Decays in the PQCD Factorization Approach with Lattice QCD Input

Advances in High Energy Physics, Volume 2021, Issue 1, 2021., 2021
In this paper, we studied systematically the semileptonic decays Bs⟶ϕl+l− with l− = (e−, μ−, τ−) by using the perturbative QCD (PQCD) and the “PQCD+Lattice” factorization approach, respectively. We first evaluated all relevant form factors Fi(q2) in the low‐q2 region using the PQCD approach, and we also took the available lattice QCD results at the ...
Su-Ping Jin, Zhen-Jun Xiao, Andrea Coccaro   +2 more
wiley   +1 more source

Some remarks on anthropic approaches to the strong CP problem

Journal of High Energy Physics, 2018
The peculiar value of θ is a challenge to the notion of an anthropic landscape. We briefly review the possibility that a suitable axion might arise from an anthropic requirement of dark matter.
Michael Dine, Laurel Stephenson Haskins, Lorenzo Ubaldi, Di Xu   +3 more
doaj   +1 more source

An Approximate Light Cone Method to Investigate Meson Structure [PDF]

, 2002
To appear in the proceedings of The Phenomenology of Large N(c) QCD, Tempe, Arizona, 9-11 Jan 2002.Comment: 5 pages, 2 figures, other ...
Burkardt, Matthias, Seal, Sudip K.
core   +3 more sources

Current‐Component Independent Transition Form Factors for Semileptonic and Rare D⟶π(K) Decays in the Light‐Front Quark Model

Advances in High Energy Physics, Volume 2021, Issue 1, 2021., 2021
We investigate the exclusive semileptonic and rare D⟶π(K) decays within the standard model together with the light‐front quark model (LFQM) constrained by the variational principle for the QCD‐motivated effective Hamiltonian. The form factors are obtained in the q+ = 0 frame and then analytically continue to the physical timelike region.
Ho-Meoyng Choi, Qin Chang
wiley   +1 more source

Randomness on the Lattice [PDF]

, 2000
In this lecture we review recent lattice QCD studies of the statistical properties of the eigenvalues of the QCD Dirac operator. We find that the fluctuations of the smallest Dirac eigenvalues are described by chiral Random Matrix Theories with the ...
Akemann, Akemann, Akemann, Banks, Berbenni-Bitsch, Berbenni-Bitsch, Berbenni-Bitsch, Berbenni-Bitsch, Berbenni-Bitsch, Berbenni-Bitsch, Berg, Berg, Breźin, Brézin, Chandrasekharan, Damgaard, Damgaard, Damgaard, Damgaard, Damgaard, Damgaard, Damgaard, Damgaard, Damgaard, DeTar, Edwards, Edwards, Efetov, Efetov, Farchioni, Farchioni, Farchioni, Forrester, Fyodorov, Fyodorov, Fyodorov, Garcia-Garcia, Gasser, Guhr, Guhr, Göckeler, Halasz, Halasz, Hernandez, J.J.M. Verbaarschot, Jackson, Jackson, Jackson, Janik, Jurkiewicz, Jurkiewicz, Kanzieper, Kanzieper, Kogut, Leutwyler, Ma, Ma, Markum, Nagao, Nishigaki, Osborn, Osborn, Osborn, Pauli, Pauli, Pullirsch, Schnabel, Shuryak, Stephanov, Verbaarschot, Verbaarschot, Verbaarschot, Verbaarschot, Verbaarschot, Verbaarschot, Wettig, Wilke   +76 more
core   +3 more sources

Relativistic corrections to light-cone distribution amplitudes of S-wave B c mesons and heavy quarkonia

Journal of High Energy Physics, 2017
In collinear factorization, light-cone distribution amplitudes (LCDAs) are key ingredients to calculate the production rate of a hadron in high energy exclusive processes.
Wei Wang, Ji Xu, Deshan Yang, Shuai Zhao
doaj   +1 more source

Large Lorentz Scalar and Vector Potentials in Nuclei [PDF]

, 1999
In nonrelativistic models of nuclei, the underlying mass scales of low-energy quantum chromodynamics (QCD) are largely hidden. In contrast, the covariant formulations used in relativistic phenomenology manifest the QCD scales in nuclei through large ...
Furnstahl, R. J., Serot, Brian D.
core   +2 more sources

Gribov's Confinement Scenario [PDF]

, 2000
I give a brief account of Gribov's scenario of supercritical charges in QCD. Gribov's equation for the Green function of light quarks and its derivation from the corresponding Dyson-Schwinger equation are described.
Carlo Ewerz, Dokshitzer, Ewerz, Fomin, Gribov, Gribov, Roberts   +6 more
core   +2 more sources