Quark gluon plasma and upsilon suppression

Abstract

The time-dependent suppression probability P(t) of upsilon particles has been estimated due to the screeningwhen embedded in the medium of quark gluon plasma where the screened potential is represented by an optical potentialof typeV(r; ) =[V0+iW01+exp((rR) )]. A similar type of variation of suppression probability has been obtained by others.It has been observed thatt12for melting ofis 1.5 fm/c. The variation of the screening radii of heavy mesons(J= ; ) for 1S and 2S states with respect to plasma radius have also been investigated with the same complex screeningpotential. We have found that the more highly excited state (2S) is less tightly bound and has a larger effective radiusthan the ground state.