Dilepton/Photon Production in Heavy Ion Collisions and the QCD Phase Transition

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dc.creatorHung, C. M.
dc.creatorShuryak, E. V.
dc.date1996-08-12
dc.date1996-08-23
dc.date.accessioned2026-07-07T11:14:40Z
dc.date.available2026-07-07T11:14:40Z
dc.descriptionWe calculate electromagnetic production from highly excited hadronic matter created in heavy ion collisions. The rates include the usual lowest order processes in quark-gluon plasma plus the usual reactions in the hadronic phase, related with rho,a_1 mesons. The space-time integration is done using a hydrodynamical model. We have found that dilepton mass spectrum agrees with results of other previous works, but *disagrees* with the CERES dilepton data. In order to explain these data, some "unconventional" production mechanism need to be incorporated: we discuss especially the notion of modified rho,a_1 masses, which indeed may explain the data. Other suggestions (e.g. the longer-lived fireball) to increase the production of low mass dileptons seem to be insufficient for the task. The results for direct photon production are below the current WA80 experimental bounds, for all variants considered.
dc.description34 pages LaTeX, with encapsulated ps figures. WWW home at http://looney.physics.sunysb.edu/~daffy/phd.html One comment and one reference added to appendix
dc.identifierhttps://arxiv.org/abs/hep-ph/9608299
dc.identifierhttp://arxiv.org/abs/hep-ph/9608299
dc.identifierPhys.Rev.C56:453-467,1997
dc.identifierdoi:10.1103/PhysRevC.56.453
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192149
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleDilepton/Photon Production in Heavy Ion Collisions and the QCD Phase Transition
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