Rho-meson resonance broadening in QCD at finite temperature
High Energy Physics - Phenomenology
2013-05-30 v3 Nuclear Theory
Abstract
Thermal Finite Energy QCD sum rules for the vector current correlator are used to study quark-gluon deconfinement. Assuming -meson saturation of the correlator in the hadronic sector, and the Operator Product Expansion in QCD, we obtain the temperature behavior of the resonance parameters (coupling, mass, and width), and of the leading vacuum condensates, as well as the perturbative QCD threshold in the complex squared energy plane. The results are consistent with quark-gluon deconfinement at a critical temperature . The temperature dependence of the -meson width is of importance for current experiments on dimuon production in nuclear collisions.
Keywords
Cite
@article{arxiv.1210.2588,
title = {Rho-meson resonance broadening in QCD at finite temperature},
author = {Alejandro Ayala and C. A. Dominguez and M. Loewe and Y. Zhang},
journal= {arXiv preprint arXiv:1210.2588},
year = {2013}
}