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arXiv · 0901.1998

Quarkonium states in an anisotropic QCD plasma

Adrian Dumitru·Yun Guo·Agnes Mocsy·Michael Strickland
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Abstract

We consider quarkonium in a hot QCD plasma which, due to expansion and non-zero viscosity, exhibits a local anisotropy in momentum space. At short distances the heavy-quark potential is known at tree level from the hard-thermal loop resummed gluon propagator in anisotropic perturbative QCD. The potential at long distances is modeled as a QCD string which is screened at the same scale as the Coulomb field. At asymptotic separation the potential energy is non-zero and inversely proportional to the temperature. We obtain numerical solutions of the three-dimensional Schroedinger equation for this potential. We find that quarkonium binding is stronger at non-vanishing viscosity and expansion rate, and that the anisotropy leads to polarization of the P-wave states.

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Adrian Dumitru, Yun Guo, Agnes Mocsy, Michael Strickland. 2009-03-17. Quarkonium states in an anisotropic QCD plasma. https://doi.org/10.1103/physrevd.79.054019

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