Charmonium in a weakly coupled quark-gluon plasma

Abstract

We present a model of charmonium as two heavy quarks propagating classically in a weakly coupled quark-gluon plasma. The quarks interact via a static, color-dependent potential and also suffer collisions with the plasma particles. We calculate the radiation width of the color octet state (for fixed, classical $q\bar{q}$ separation) and find that it is long-lived provided a finite gluon mass is used to provide a threshold energy.

Comments: 7 pages in plain LaTeX + 3 figures packed with uufiles; slight changes to comply with referees, added one reference