Heavy Flavor in the sQGP
Abstract
We attempt a unified treatment of heavy quarkonia and heavy-quark diffusion in the Quark-Gluon Plasma. Our approach is based on finite-temperature T-matrices with interaction potentials estimated from the heavy-quark internal energy computed in thermal lattice QCD (lQCD). In the charmonium sector S-wave bound states (J/\psi, \eta_c) survive up to temperatures of ~2 T_c, not inconsistent with constraints from euclidean correlation functions in lQCD. In the open-heavy flavor sector, the T-matrix interaction reduces heavy-quark diffusion substantially, leading to fair agreement with single-electron spectra at RHIC and suggestive for a small viscosity-to-entropy ratio close to T_c.
Cite
@article{arxiv.0806.3341,
title = {Heavy Flavor in the sQGP},
author = {R. Rapp and D. Cabrera and V. Greco and M. Mannarelli and H. van Hees},
journal= {arXiv preprint arXiv:0806.3341},
year = {2008}
}
Comments
6 pages, 12 eps-figs, Proc. of 24. Winter Workshop on Nuclear Dynamics, South Padre Island (TX, USA), April 05-12, 2008