The Ψ′ in the relativistic heavy ion collision

Abstract

We have investigated the temperature influence on the hadronic decay width of Ψ′. Contrary to the divergence of the decay width ofρ-meson,π-meson at critical temperature as suggested in some papers, we find that the decay width of Ψ′ decreases with increasing temperature. Thus the leptonic decay can be used to measure the number of produced Ψ′ at finite temperature just as at zero temperature.