Fragmentation Function in Non-Equilibrium QCD Using Closed-Time Path Integral Formalism
Abstract
In this paper we implement Schwinger-Keldysh closed-time path integral formalism in non-equilibrium QCD to the definition of Collins-Soper fragmentation function. We consider a high p_T parton in QCD medium at initial time t_0 with arbitrary non-equilibrium (non-isotropic) distribution function f(\vec{p}) fragmenting to hadron. We formulate parton to hadron fragmentation function in non-equilibrium QCD in the light-cone quantization formalism. It may be possible to include final state interactions with the medium via modification of the Wilson lines in this definition of the non-equilibrium fragmentation function. This may be relevant to study hadron production from quark-gluon plasma at RHIC and LHC.
Keywords
Cite
@article{arxiv.0808.1288,
title = {Fragmentation Function in Non-Equilibrium QCD Using Closed-Time Path Integral Formalism},
author = {Gouranga C Nayak},
journal= {arXiv preprint arXiv:0808.1288},
year = {2014}
}
Comments
15 pages latex, Accepted for Publication in European Physical Journal C