Eur. Phys. J. C (2010) 67: 465-477
https://doi.org/10.1140/epjc/s10052-010-1318-2

Regular Article - Theoretical Physics

Charmonium suppression in the presence of dissipative forces in a strongly-coupled quark–gluon plasma

¹ Department of Physics, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
² Department of Theoretical Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai, 400 005, India

^* e-mail: binoyfph@iitr.ernet.in

Received: 5 January 2010
Revised: 30 March 2010
Published online: 28 April 2010

Abstract

We study the survival of charmonium states in a strongly-coupled quark–gluon plasma in the presence of dissipative forces. We consider first-order dissipative corrections to the plasma equation of motion in the Bjorken boost-invariant expansion with a strongly-coupled equation of state for QGP and study the survival of these states with the dissociation temperatures obtained by correcting the full Cornell potential not its Coulomb part alone with a dielectric function encoding the effects of deconfined medium. We further explore the sensitivity of prompt and sequential suppression of these states to the shear viscosity-to-entropy density ratio, η/s from perturbative QCD and AdS/CFT predictions. Our results show nice agreement with the recent experimental results at RHIC.