arXiv:hep-ph/0002047·v1·High Energy Physics — Phenomenology
Dyson-Schwinger Equation Approach to the QCD Deconfinement Transition and J/Psi Dissociation
D.B. Blaschke (1) · G.R.G. Burau (1) · M.A. Ivanov (2) · Yu.L. Kalinovsky (3) · P.C. Tandy (4) ((1) University of Rostock · (2) BLTP JINR Dubna · (3) LCTA JINR Dubna · (4) Kent State University)
Abstract
We consider an extension of the finite-temperature Dyson-Schwinger equation (DSE) approach to heavy mesons and quarkonia and apply it to calculate the cross section for the J/Psi breakup reaction J/Psi + pi --> D + D. We study the effects of chiral symmetry restoration in the light quark sector on this process and obtain a critical enhancement of the reaction rate at the chiral/ deconfinement transition. Implications for the kinetics of charmonium production in ultrarelativistic heavy-ion collisions are discussed with particular emphasis on the recently observed anomalous J/Psi suppression as a possible signal for quark matter formation.
Comments: 10 pages, 6 figures, sprocl.sty, to appear in: "Progress in Nonequilibrium Green's functions", M. Bonitz (Ed.), World Scientific, Singapore, 2000