On the $M_T$ scaling of dilepton spectra in high energy heavy ion collisions

Abstract

The so-called $M_T$ scaling for dilepton spectra at RHIC energies is examined. It is seen that a proper accounting of the complete set of dilepton producing processes forces us to abandon the proposed scaling around $M_T$ = 2.6 GeV, which has been put forward as a possible signature of the presence of quark-matter. Any substantial transverse expansion in the QGP phase itself will also offset this scaling behaviour. The rates of lepton pair production are time--integrated in Bjorken hydrodynamics and the different sources are compared against each other.

18 pages, 4 appended uuencoded figures, ReVTeX 3.0, McGill 94/8

References in corpus (2)

• Photon production through $A_1$ resonance in high energy heavy ion collisions
• Lepton pairs from thermal mesons

Cited by in corpus (2)

• Hydrodynamical Description of 200 A GeV/c S+Au Collisions: Hadron and Electromagnetic Spectra
• Dilepton/Photon Production in Heavy Ion Collisions and the QCD Phase Transition