Heavy-quarkonium interaction in QCD at finite temperature

Details Heavy-quarkonium interaction in QCD at finite temperature Heavy-quarkonium interaction in QCD at finite temperature

2004-10-21

arxiv.org/abs/hep-ph/0410295v2

Phys.Lett. B614 (2005) 44-52

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 5 figures. Clarification added, published version

Scientific paper

10.1016/j.physletb.2005.03.065

We explore the temperature dependence of the heavy-quarkonium interaction based on the Bhanot-Peskin leading order perturbative QCD analysis. The Wilson coefficients are computed solving the Schrodinger equation in a screened Coulomb heavy-quark potential. The inverse Mellin transform of the Wilson coefficients then allows for the computation of the 1S and 2S heavy-quarkonium gluon and pion total cross section at finite screening/temperature. As a phenomenological illustration, the temperature dependence of the 1S charmonium thermal width is determined and compared to recent lattice QCD results.

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