Heavy Quarkonium in a weakly-coupled quark-gluon plasma below the melting temperature

Details Heavy Quarkonium in a weakly-coupled quark-gluon plasma below the melting temperature Heavy Quarkonium in a weakly-coupled quark-gluon plasma below the melting temperature

2010-07-23

arxiv.org/abs/1007.4156v1

JHEP09(2010)038

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, 2 figures

Scientific paper

10.1007/JHEP09(2010)038

We calculate the heavy quarkonium energy levels and decay widths in a quark-gluon plasma, whose temperature T and screening mass m_D satisfy the hierarchy m alpha_s >> T >> m alpha_s^2 >> m_D (m being the heavy-quark mass), at order m alpha_s^5. We first sequentially integrate out the scales m, m alpha_s and T, and, next, we carry out the calculations in the resulting effective theory using techniques of integration by regions. A collinear region is identified, which contributes at this order. We also discuss the implications of our results concerning heavy quarkonium suppression in heavy ion collisions.

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