Electromagnetic signals of quark gluon plasmaBIKASH SINHAVariable Energy Cyclotron Centre, 1/AF Bidhannagar, Calcutta 700 064, India Abstract. Successive equilibration of quark degrees of freedom and its effects on electromagnetic signals of quark gluon plasma are discussed. The effects of the variation of vector meson masses and decay widths on photon production from hot strongly interacting matter formed after Pb + Pb and S + Au collisions at CERN SPS energies are considered. It has been shown that the present photon spectra measured by WA80 and WA98 Collaborations can not distinguish between the formation of quark matter and hadronic matter in the initial state. Keywords: Fokker-Planck equation; vector mesons; photons. Pacs No.: 25.75.+r; 12.40.Yx; 13.85.Qk
|