On the MT scaling of dilepton spectra in high energy heavy ion collisions
D. K. Srivastava, Jicai Pan, V. Emel'yanov, C. Gale
Abstract
The so-called MT 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 MT = 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.
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