Quarkonium in a weakly-coupled quark-gluon plasma
Abstract
We report about a recent calculation of the heavy quarkonium mass and decay width in a quark-gluon plasma, whose temperature T and screening mass mD satisfy the hierarchy m alphas >> pi T >> m alphas2 >> mD, m being the heavy-quark mass, up to order m alphas5. The calculation may be relevant to understand the behavior of the Y(1S) in a quark-gluon plasma at present-day colliders.
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