Effects of running couplings on jet conversion photons

Details Effects of running couplings on jet conversion photons Effects of running couplings on jet conversion photons

2011-01-31

arxiv.org/abs/1101.5860v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 eps figures, To appear in the proceedings of the The 6th International Conference on Physics and Astrophysics of Qu

Scientific paper

We calculate photons from jet-plasma interaction considering collisional and radiative energy loss of jet parton. The phase space distribution of the participating jet is dynamically evolved by solving Fokker-Planck equation. We treat the strong coupling constant ($\alpha_s$) as function of momentum and temperature while calculating the drag and diffusion coefficients. It is observed that the quenching factor is substantially modified as compared to the case when $\alpha_s$ is taken as constant. It is shown that the Phenix data is reasonably well reproduced when contributions from all the relevant sources are taken into account.

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