Intermediate mass dilepton production in heavy-ion collisions at SPS energies

Details Intermediate mass dilepton production in heavy-ion collisions at SPS energies Intermediate mass dilepton production in heavy-ion collisions at SPS energies

1997-12-23

arxiv.org/abs/nucl-th/9712076v1

Nucl.Phys.A638:491c-494c,1998

Physics

Nuclear Physics

Nuclear Theory

4 pages, including 2 postscript figures. Talk presented at Quark Matter'97, to appear in the Proceedings

Scientific paper

10.1016/S0375-9474(98)00338-8

Through the analysis of HELIOS-3 data on dilepton spectra, we demonstrate the importance of secondary processes for the dilepton production in heavy-ion collisions in the intermediate mass region. We find that, while the dilepton spectra in proton-induced reactions can be nicely explained by the decay of primary vector mesons, charmed hadrons, and initial Drell-Yan processes, the strong enhancement seen in the heavy-ion data comes mainly from the secondary meson-meson interactions which are unique to heavy-ion collisions.

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