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arXiv · 1007.4156

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

Nora Brambilla·Miguel Angel Escobedo·Jacopo Ghiglieri·Joan Soto·Antonio Vairo
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Abstract

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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Nora Brambilla, Miguel Angel Escobedo, Jacopo Ghiglieri, Joan Soto, Antonio Vairo. 2010-07-23. Heavy Quarkonium in a weakly-coupled quark-gluon plasma below the melting temperature. https://doi.org/10.1007/jhep09(2010)038

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