2018 Impact factor 2.481
Hadrons and Nuclei

Eur. Phys. J. A 9, 357-364

Thermal dileptons from quark and hadron phases of an expanding fireball

R.A. Schneider - W. Weise

Physik-Department, Technische Universität München,D-85747 Garching, Germany

Received: 4 August 2000
Communicated by A. Schäfer

Abstract
A fireball model with time evolution based on transport calculations is used to examine the dilepton emission rate of an ultra-relativistic heavy-ion collision. A transition from hadronic matter to a quark-gluon plasma at a critical temperature $T_{\rm C}$ between 130-170 MeV is assumed. We also consider a possible mixed phase scenario. We include thermal corrections to the hadronic spectra below $T_{\rm C}$ and use perturbation theory above $T_{\rm C}$. The sensitivity of the spectra with respect to the freeze-out temperature, the initial fireball temperature and the critical temperature is investigated.

PACS
12.38.Mh Quark-gluon plasma - 11.10.Wx Finite-temperature field theory


Copyright Società Italiana di Fisica, Springer-Verlag 2000