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Title: Heavy quarkonium in a weakly-coupled quark-gluon plasma below the melting temperature
Author: Brambilla, Nora
Escobedo, Miguel Ángel
Ghiglieri, Jacopo
Soto Riera, Joan
Vairo, Antonio
Keywords: Nivells d'energia (Mecànica quàntica)
Energy levels (Quantum mechanics)
Issue Date: 2010
Publisher: Springer Verlag
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 mα s ≫ T ≫ mα s 2 ≫m D (m being the heavy-quark mass), at order mα s 5 . We first sequentially integrate out the scales m, mα 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.
Note: Versió postprint del document publicat a:
It is part of: Journal of High Energy Physics, 2010, vol. 2010, num. 038
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ISSN: 1126-6708
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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