J/psi gluonic dissociation revisited: I. Fugacity, flux and formation time effects

摘要

We revisit the standard treatment due to Xu et al. of J/psi suppression due to gluonic bombardment in an equilibrating quark - gluon plasma. Effects arising from gluon fugacity, relative g-psi flux, and psi meson formation time are explicitly incorporated in the formulation of the gluon number density, velocity-weighted cross section, and the survival probability. Our new formulae are applied to a numerical study of the pattern of J/psi suppression in the central rapidity region at RHIC/LHC energies. The temperature and transverse momentum dependence of our graphs have noticeable differences from those of Xu et al.