SEARCH FOR DIRECT PHOTON PRODUCTION IN 200 A GEV S- A STATUS-REPORT(AU REACTIONS )

Authors
ALBRECHT R AWES TC BARLAG C BERGER F BLOOMER M BLUME C BOCK D BOCK R BOHNE E BUCHER D CLAESSON G CLAUSSEN A CLEWING G DEBBE R DRAGON L EKLUND A FOKIN S GARPMAN S GLASOW R GUSTAFSSON HA GUTBROD HH HANSEN O HOLKER G IDH J IPPOLITOV M JACOBS P KAMPERT KH KARADJEV K KOLB BW LEBEDEV A LOHNER H LUND I MANKO V MOSKOWITZ B OBENSHAIN FE OSKARSSON A OTTERLUND I PEITZMANN T PLASIL F POSKANZER AM PURSCHKE M ROTERS B SAINI S SANTO R SCHMIDT HR SODERSTROM K SORENSEN SP STANKUS PW STEFFENS K STEINHAEUSER P STENLUND E STUKEN D VINOGRADOV A WEGNER H YOUNG GR
Citation
R. Albrecht et al., SEARCH FOR DIRECT PHOTON PRODUCTION IN 200 A GEV S- A STATUS-REPORT(AU REACTIONS ), Nuclear physics. A, 590(1-2), 1995, pp. 81-92
Citations number
13
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. A → ACNP
ISSN journal
03759474
Volume
590
Issue
1-2
Year of publication
1995
Pages
81 - 92
Database
ISI
SICI code
0375-9474(1995)590:1-2<81:SFDPPI>2.0.ZU;2-W
Abstract
Direct thermal photons in the p(T) range of 0 - 5 GeV/c are expected t o provide a sensitive probe of the hot dense matter formed in the earl y stage of relativistic heavy ion collisions. The production of single photons in 200 A GeV S+Au reactions has been investigated using the 3 800 element Pbglass calorimeter of CERN experiment WA80. Neutral pi(0) and eta cross sections have been measured via their two-photon decay branch yields. In a first analysis of the WA80 results, a slight exces s photon yield above that which may be accounted for by hadronic decay s was observed for central collisions. A report on the status of the r eanalysis of this data is presented.