Dilepton production from -mesons in a quark-gluon plasma
1 Institut für Theoretische Physik, Universität Giessen, 35392 Giessen, Germany
2 ECT*, Villa Tambosi, Strada delle Tabarelle 286, 38050 Villazzano (Trento), Italy
Received: 8 September 1999 / Revised version: 22 October 1999 Communicated by A. Schäfer
Assuming that -mesons exist in a quark-gluon plasma at temperatures close to the QCD phase transition, we calculate the dilepton production rate from q- annihilation via a -meson state using Vector Meson Dominance. The result is compared to the rates from direct q- annihilation and from - annihilation. Furthermore we discuss the suppression of low mass dileptons if the quarks assume an effective mass in the quark-gluon plasma.
25.75.-q Relativistic heavy-ion collisions - 12.38.Mh Quark-gluon plasma - 14.40.Cs Other mesons with S = C = 0, mass <2.5 GeV
Copyright Società Italiana di Fisica, Springer-Verlag 2000