Finite Temperature Meson Correlation Functions in HTL Approximation

Details Finite Temperature Meson Correlation Functions in HTL Approximation Finite Temperature Meson Correlation Functions in HTL Approximation

2000-07-11

arxiv.org/abs/hep-ph/0007093v2

Phys.Lett. B497 (2001) 249-258

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, LaTeX2e File, 8 EPS-files, minor changes in abstract and text, to appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(00)01322-8

We calculate temporal correlators and their spectral functions with meson quantum numbers in the deconfined phase of QCD using the hard thermal loop (HTL) approximation for the quark propagator. Although this approach does not result in a complete next-to-leading order perturbative calculation it takes into account important medium effects such as thermal quark masses and Landau damping in the quark-gluon plasma. We show that both effects lead to competing modifications of the free mesonic correlation functions. We find that correlators in scalar channels are only moderately influenced by the HTL medium effects, while the HTL-vertex corrections lead to divergent vector correlators.

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