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

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

1994-04-05

arxiv.org/abs/nucl-th/9404005v1

Phys.Lett.B329:157-163,1994

Physics

Nuclear Physics

Nuclear Theory

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

Scientific paper

10.1016/0370-2693(94)90753-6

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.

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