Effects of Dynamical Quarks on the Stability of Heavy Quarkonia in Quark-Gluon Plasma

2005/09/09 by Cheuk-Yin Wong, Wong, Cheuk-Yin
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #hep-ph #nucl-th

paper · pdf · doi:10.48550/arxiv.hep-ph/0509088

4 pages, talk presented at Recontre de Blois, Chateau de Blois, France, May 15-20, 2005

arxiv created 2005/09/09 · arxiv updated 2009/12/01

Abstract

To study the stability of heavy quarkonia in quark-gluon plasma, we use a color-singlet Q-Qbar potential determined previously to be a well-defined linear combination of the free energy F₁ and the internal energy U₁. Using the lattice gauge results of Kaczmarek et al., the dissociation temperatures of J/psi and chi_b in quenched QCD are found to be 1.62Tc and 1.18Tc respectively, in good agreement with spectral function analyses. The dissociation temperature of J/psi in full QCD with 2 flavors is 1.42Tc. Thus, the presence of dynamical quarks in full QCD lowers the dissociation temperature of J/psi, but J/psi remains bound up to 1.42Tc.

Related

• Bound to unbound states transitions of heavy quarkonia in the cooling phase of QGP
• J/ψ suppression in nucleus-nucleus collisions
• Quarkonium dissociation in a thermal medium
• Dissociation of a Heavy Quarkonium at T
• Charmonium in a hot, dense medium