Impact of momentum anisotropy and turbulent chromo-fields on thermal particle production in quark-gluon plasma medium

TL;DR

This paper investigates how momentum anisotropy and turbulent chromo-fields influence thermal particle production in quark-gluon plasma, revealing sensitivity of dilepton rates to anisotropy strength.

Contribution

It introduces a linearized transport model incorporating turbulent chromo-fields and anisotropy to estimate thermal dilepton production in QGP.

Findings

Dilepton production rate is sensitive to momentum anisotropy.

Modified distribution functions encode effects of turbulent chromo-fields.

Results suggest turbulence and anisotropy significantly affect particle yields.

Abstract

Momentum anisotropy present during the hydrodynamic evolution of Quark-Gluon Plasma (QGP) in RHIC may lead to chromo-Weibel instability and turbulent chromo-fields.The dynamics of the quark and gluon momentum distributions in this case is governed by an effective diffusive Vlasov equation (linearized). The solution of this linearized transport equation for the modified momentum distribution functions lead to the mathematical form of non-equilibrium momentum distribution functions of quarks/antiquarks and gluons. The modification to these distributions encode the physics of turbulent color fields and momentum anisotropy. In the present manuscript, we employ these distribution functions to to estimate thermal dilepton production rate in the QGP medium. The production rate is seen to have appreciable sensitivity to the strength of the anisotropy.