Enhancement of low-mass dileptons in heavy-ion collisions

Abstract

Using a relativistic transport model for the expansion stage of S+Au collisions at 200 GeV/nucleon, we show that the recently observed enhancement of low-mass dileptons by the CERES collaboration can be explained by the decrease of vector meson masses in hot and dense hadronic matter.

12 pages, RevTeX, 3 figures available from [email protected]

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