Proof of Factorization of Fragmentation Function in Non-Equilibrium QCD

Details Proof of Factorization of Fragmentation Function in Non-Equilibrium QCD Proof of Factorization of Fragmentation Function in Non-Equilibrium QCD

2009-05-25

arxiv.org/abs/0905.3931v4

Annals Phys.325:682-690,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages latex, (Final Published Version, Annals of Physics)

Scientific paper

10.1016/j.aop.2009.12.009

In this paper we prove factorization of fragmentation function in non-equilibrium QCD by using Schwinger-Keldysh closed-time path integral formalism. We use the background field method of QCD in a pure gauge in path integral approach to prove factorization of fragmentation function in non-equilibrium QCD. Our proof is valid in any arbitrary gauge fixing parameter $\alpha$. This may be relevant to study hadron production from quark-gluon plasma at high energy heavy-ion colliders at RHIC and LHC.

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