Excess production of low-mass lepton pairs in S+Au collisions at the CERN Super Proton Synchrotron and the quark-hadron phase transition
- Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Calcutta 700 064 (India)
- Physics Department, McGill University, 3600 University Street, Montreal, H3A2T8 (CANADA)
The mass distribution for excess dielectrons in S+Au collisions at 200{ital A} GeV measured by the CERES Collaboration at the CERN Super Proton Synchrotron is analyzed. The data are seen to be in satisfactory agreement with a scenario where a thermalized quark-gluon plasma is formed initially, which expands, cools, hadronizes, and undergoes a freeze-out. The same treatment is also seen to provide a reasonable description for the excess dimuons measured by the HELIOS/3 experiment for S+W collisions. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 278868
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 2 Vol. 53; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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