Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1998-07-29
Nucl.Phys. A650 (1999) 227-244
Physics
Nuclear Physics
Nuclear Theory
20 pages, 17 figures, LaTeX using elsart.sty; introduction rewritten to clarify the aim of the paper, references added; accept
Scientific paper
10.1016/S0375-9474(99)00107-4
We study Pb+Pb collisions at 158 A GeV/c using a hydrodynamical approach. We test different equations of state (EoSs) and different initial conditions and show that there are more than one initial state for each EoS which reproduce the observed hadronic spectra. We also find that different equations of state favour different freeze-out temperature. Simultaneously we calculate the thermal dilepton and photon spectra for each EoS and initial state. We compare the dilepton mass spectrum to data measured by the CERES collaboration and find that the differences in spectra obtained using different EoSs and initial states are not resolvable within the current experimental resolution. However, at invariant masses over 2 GeV the difference in the yield due to various initial states is close to an order of magnitude. We also study the rapidity distribution of lepton pairs and find that for masses around 800 MeV the shape of the distribution depends strongly on the EoS.
Huovinen Pasi
Ruuskanen P. V.
Sollfrank Josef
No associations
LandOfFree
Sensitivity of electromagnetic spectra to equation of state and initial energy density in the Pb+Pb collisions at SPS does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Sensitivity of electromagnetic spectra to equation of state and initial energy density in the Pb+Pb collisions at SPS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sensitivity of electromagnetic spectra to equation of state and initial energy density in the Pb+Pb collisions at SPS will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-462170