Results 21 to 30 of about 7,425,422 (182)

Quantum kinetic theory for spin transport of quarks with background chromo-electromagnetic fields

open access: yesJournal of High Energy Physics, 2022
We derive the quantum kinetic equations for massive and massless quarks coupled with the background chromo-electromagnetic fields from the Wigner-function approach with the n expansion and effective power-counting scheme.
Di-Lun Yang
doaj   +1 more source

Anisotropic flow and the valence quark skeleton of hadrons

open access: yesJournal of High Energy Physics, 2023
We study transverse momentum anisotropies, in particular, the elliptic flow v 2 due to the interference effect sourced by valence quarks in high-energy hadron-hadron collisions. Our main formula is derived as the high-energy (eikonal) limit of the impact-
Meijian Li   +3 more
doaj   +1 more source

Hadronic vacuum polarization and the MUonE proposal

open access: yesJournal of High Energy Physics, 2022
The MUonE proposal at the CERN SPS consists in extracting the value of the hadronic vacuum polarization self-energy function (HVP) from its contribution to the differential cross-section of elastic muon-electron scattering.
David Greynat, Eduardo de Rafael
doaj   +1 more source

Next-to-leading-power kinematic corrections to DVCS: a scalar target

open access: yesJournal of High Energy Physics, 2023
Using the recent results on the contributions of descendants of the leading twist operators to the operator product expansion of two electromagnetic currents we derive explicit expressions for the kinematic finite-t and target mass corrections to the ...
V. M. Braun, Yao Ji, A. N. Manashov
doaj   +1 more source

Lattice QCD at finite density [PDF]

open access: yes, 1987
Karsch F. Lattice QCD at finite density. Nuclear Physics, A. 1987;461(1-2):305-316.We discuss the behavior of the zero temperature limit of lattice field theories with finite chemical potential.
Karsch, Frithjof
core   +1 more source

Phenomenology [PDF]

open access: yes, 2022
Phenomenology is the contemplative study of human experience. It refers to a philosophical framework as well as a methodology that can inform educational practice and research.
Suzan Koseoglu   +3 more
core   +1 more source

Quark polarization and transverse momentum effects on double quarkonium production in hadronic collisions

open access: yesJournal of High Energy Physics
We investigate the inclusive production of double quarkonia (J/ψ, ψ(2S), Υ mesons) in polarized hadron-hadron collisions, considering the kinematic configuration where the transverse momentum of each pair of bound states is much smaller than its ...
Carlo Flore, Cristian Pisano
doaj   +1 more source

The photon energy spectrum in B → X s γ at N3LL′

open access: yesJournal of High Energy Physics, 2023
We present predictions for the photon energy spectrum in inclusive B → X s γ decays mediated by the electromagnetic penguin operator O 7 to N3LL′. We use soft-collinear effective theory (SCET) to resum the singular contributions in the peak region at ...
Bahman Dehnadi   +2 more
doaj   +1 more source

Generalized Beth–Uhlenbeck Entropy Formula From the Φ‐Derivable Approach

open access: yesContributions to Plasma Physics, Volume 66, Issue 7-8, September 2026.
ABSTRACT We derive a generalized Beth–Uhlenbeck formula for the entropy of a dense fermion system with strong two‐particle correlations, including scattering states and bound states. We work within the Φ‐derivable approach to the thermodynamic potential.
David Blaschke, Gerd Röpke, Gordon Baym
wiley   +1 more source

On-shelļ methods for perturbative QCD [PDF]

open access: yes, 2006
We present new on-shell techniques for the calculation of colour ordered helicity amplitudes in QCD. We review the methods of on-shell recursion and the MHV rules before applying them to tree-level processes within the Standard Model.
Badger, Simon D., Badger, Simon D
core  

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