Medium effects in low mass lepton pair production

✍ Scribed by Bengt Friman

• Book ID: 104336155
• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 758 KB
• Volume: 610
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(96)00370-3

✦ Synopsis

The theoretical work on the production of low-mass lepton pairs in relativistic heavyion collisions is reviewed. In particular I focus on attempts to understand the observed enhancement of low-mass lepton pairs in terms of modified vector meson properties in hadronic matter. I begin with some general remarks, where I discuss the identification of hadrons in a medium with the corresponding quasiparticle excitations of the manybody system. Various medium effects on the properties of the p meson and results on lepton-pair production in simulations of relativistic heavy-ion collisions including these effects are then examined. Finally I describe recent results on the momentum dependence of the p-meson self energy in matter due to pN interactions and present results for the corresponding production rate of e+e -pMrs.