Low-mass dileptons at the SPS

Details Low-mass dileptons at the SPS Low-mass dileptons at the SPS

1996-11-14

arxiv.org/abs/hep-ph/9611328v1

Phys.Rev.C57:882-888,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages of LaTex and 5 postscript figures submitted Phys Rev D

Scientific paper

10.1103/PhysRevC.57.882

We use a simple QCD-based model to study particle production in S+Au collisions at 200 GeV/n. A requisite consistency is met for the hadronic observables (pi0 and pi- 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, pi rho -> pi e+e-, and adding to pi+ pi- annihilation and hadronic decays, the ``excess'' dilepton signal can possibly be interpreted.

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