A second look at single-photon production in S+Au collisions at 200 A GeV and implications for quark-hadron phase transition

Citation
Dk. Srivastava et Bc. Sinha, A second look at single-photon production in S+Au collisions at 200 A GeV and implications for quark-hadron phase transition, EUR PHY J C, 12(1), 2000, pp. 109-112
Citations number
24
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL C
ISSN journal
1434-6044 → ACNP
Volume
12
Issue
1
Year of publication
2000
Pages
109 - 112
Database
ISI
SICI code
1434-6044(200001)12:1<109:ASLASP>2.0.ZU;2-U
Abstract
We reanalyze the production of single photons in S + Au collisions at CERN SPS to investigate: (i) the consequences of using a much richer equation of state for hadrons than the one used in an earlier study by us, and (ii) to see if the recent estimates of photon production in quark matter (at two-l oop level) by Aurenche, et al. are consistent with the upper limit of the p hotos production measured by the WA80 group. We find that the data are cons istent with a quark-hadron phase transition. The data are also consistent w ith a scenario where no phase transition takes place, but where the hadroni c matter reaches a density of several hadrons per unit volume, which is rat her unphysical.