Results 61 to 70 of about 384,051 (242)
Rare top-quark decays $$t \rightarrow cg(g)$$ t → c g ( g ) in the aligned two-Higgs-doublet model
European Physical Journal C: Particles and Fields, 2022 We update the Standard Model (SM) predictions for the branching ratios of the rare top-quark decays $$t \rightarrow cg(g)$$ t → c g ( g ) , and evaluate the maximum rates that can be reached in the aligned as well as in the four conventional two-Higgs ...
Fang-Min Cai +3 more
doaj +1 more source
Multiple Parton Scattering in Nuclei: Quark-quark Scattering [PDF]
Nucl.Phys.A793:128-170,2007, 2007 Modifications to quark and antiquark fragmentation functions due to quark-quark (antiquark) double scattering in nuclear medium are studied systematically up to order \cal{O}(\alpha_{s}^2)$ in deeply inelastic scattering (DIS) off nuclear targets. At the order $\cal{O}(\alpha_s^2)$, twist-four contributions from quark-quark (antiquark) rescattering ...
arxiv +1 more source
Quark scalar, axial, and pseudoscalar charges in the Schwinger-Dyson formalism [PDF]
, 2014 We calculate the scalar, axial, and pseudoscalar charges of the quark in the Schwinger-Dyson formalism of Landau gauge QCD. It is found that the dressed quark scalar density of the valence quark is significantly enhanced against the bare quark ...
Doi, Takahiro M. +3 more
core +2 more sources
European Physical Journal C: Particles and Fields, 2022 We extend the contents of the standard model (SM) by introducing TeV-scale scalar leptoquarks to generate neutrino masses and explain some current observed deviations from the SM predictions, including the anomalous magnetic moments of charged leptons ...
Shao-Long Chen +2 more
doaj +1 more source
Nonperturbative Corrections to One Gluon Exchange Quark Potentials
, 1998 The leading nonperturbative QCD corrections to the one gluon exchange quark-quark, quark-antiquark and $q \bar{q}$ pair-excitation potentials are derived by using a covariant form of nonlocal two-quark and two-gluon vacuum expectation values.
Ahmady +37 more
core +1 more source
Machine learning of pair-contact process with diffusion
Scientific Reports, 2022 The pair-contact process with diffusion (PCPD), a generalized model of the ordinary pair-contact process (PCP) without diffusion, exhibits a continuous absorbing phase transition.
Jianmin Shen +5 more
doaj +1 more source
Gauge-Invariant Decomposition of Nucleon Spin and Its Spin-Off [PDF]
Phys.Rev.Lett. 78 (1997) 610-613, 1996 I introduce a gauge invariant decomposition of the nucleon spin into quark helicity, quark orbital, and gluon contributions. The total quark (and hence the quark orbital) contribution is shown to be measurable through virtual Compton scattering in a special kinematic region where single quark scattering dominates. This deeply-virtual Compton scattering
arxiv +1 more source
Strange quark matter and quark stars with the Dyson-Schwinger quark model [PDF]
The European Physical Journal A, 2016 9 pages, 9 ...
J. B. Wei, Huan Chen, Hans-Josef Schulze
openaire +3 more sources
Heavy and light quarks in the instanton vacuum [PDF]
, 2011 Assuming the gluon field is well approximated by instanton configurations we derive a light quarks determinant and calculate its contribution to the specific heavy quarks correlators -- namely, the heavy quark propagator and heavy quark-aniquark correlator, receiving the instanton generated light-heavy quarks interaction terms contributions. With these
arxiv +1 more source
Heavy-quark diffusion in the quark–gluon plasma
Progress in Particle and Nuclear Physics, 2023 45 pages, 27 figures, Review article for Progress in Particle and Nuclear ...
Min He, Hendrik van Hees, Ralf Rapp
openaire +2 more sources