Gluon bremsstrahlung by heavy quarks: Its effects on transport coefficients and equilibrium distribution

2013/05/28 by Surasree Mazumder, Trambak Bhattacharyya, Jan-e Alam +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevd.89.014002

published as Phys. Rev. D 89, 014002 (2014) · 8 pages, 10 figures

arxiv created 2013/05/28 · openalex publication_date 2014/01/06 · arxiv updated 2014/01/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The effects of gluon radiation by charm quarks on the transport coefficients, e.g., drag, longitudinal and transverse diffusions, and shear viscosity, have been studied within the ambit of perturbative quantum chromodynamics and kinetic theory. We found that soft gluon radiation by the charm quark has substantial effects on the transport coefficients. However, the radiative effects on the shape of its equilibrium distribution function is insignificant. We also observe that the shear viscosity to entropy ratio of the quark-gluon plasma is closer to the experimentally extracted value when the gluon radiation by the charm quark is included.

Citations

• Toward an understanding of the single electron data measured at the BNL Relativistic Heavy Ion Collider (RHIC)
• Radiative energy loss of high energy quarks and gluons in a finite volume quark-gluon plasma
• Heavy-quark diffusion, flow and recombination at RHIC
• Equilibrium Distribution of Heavy Quarks in Fokker-Planck Dynamics
• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics