J/psi hadron interaction in vacuum and in QGP

Abstract

Motivated by the recent lattice data that $J/\psi$ will survive up to 1.6$T_c$, we calculate the thermal width of $J/\psi$ at finite temperature in perturbative QCD. The inputs of the calculation are the parton quarkonium dissociation cross sections at the NLO in QCD, which were previously obtained by Song and Lee, and a gaussian charmonium wave function, whose size were fitted to an estimate by Wong by solving the schrodinger equation for charmonium in a potential extracted from the lattice at finite temperature. We find that the total thermal width above 1.4$T_c$ becomes larger than 100 to 200 MeV, depending on the effective thermal masses of the quark and gluon, which we take it to vary from 600 to 400 MeV.

arXiv comment4 pages, Talk at Quark Matter 2006

References in corpus (14)

• (Non)Thermal Aspects of Charmonium Production and a New Look at J/$\psi$ Suppression
• Maximum Entropy Analysis of the Spectral Functions in Lattice QCD
• $J/\psi$ and ${\eta }_c$ in the Deconfined Plasma from Lattice QCD
• Behavior of Charmonium Systems after Deconfinement
• Quarkonium Interactions in Hadronic Matter
• Massive gluons and quarks and the equation of state obtained from SU(3) lattice QCD
• Heavy Quarkonia in Quark-Gluon Plasma
• Statistical hadronization of heavy quarks in ultra-relativistic nucleus-nucleus collisions
• Evidence for Statistical Production of J/psi Mesons in Nuclear Collisions at 158--200 A GeV
• Quarkonium-hadron interactions in QCD
• Heavy-quarkonium hadron cross section in QCD at leading twist
• On the Sum Rule Approach to Quarkonium-Hadron Interactions
• Quarkonium-Hadron Interactions in Perturbative QCD
• Meson correlators above deconfinement

Cited by in corpus (4)

• Mass Shift and Width Broadening of J/psi in hot gluonic plasma from QCD Sum Rules
• Charmonium Spectroscopy in Strong Magnetic Fields by QCD Sum Rules: S-Wave Ground States
• Critical behavior of charmonia across the phase transition: A QCD sum rule approach
• Heavy quarkonium in a holographic QCD model