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Phys. Rev. C 57, 882–888 (1998)

Low-mass dileptons at 200 GeV/nucleon

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J. Murray and W. Bauer
National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824

K. Haglin
Department of Physics, Lawrence University, Appleton, Wisconsin 54912

Received 31 October 1996; revised 10 October 1997; published in the issue dated February 1998

We use a simple QCD-based model to study particle production in S+Au collisions at 200 GeV/nucleon. A requisite consistency is met for the hadronic observables (π0 and π- spectra) while pursuing estimates for e+e- production. Since radiative decays of initially produced hadrons has accounted for only a portion of the observed dileptons at the CERN SPS, we search for additional mechanisms. By including contributions from prompt secondary hadronic scatterings, πρπe+e-, and adding to π+π- annihilation and hadronic decays, part of the “excess” dilepton signal can possibly be interpreted.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.57.882
DOI:
10.1103/PhysRevC.57.882
PACS:
25.75.-q, 12.38.Mh, 24.85.+p, 24.10.Lx