Journal article
Observation of Direct Photons in Central 158A GeV P208b+P208b Collisions
Abstract
A measurement of direct photon production in 208Pb+208Pb collisions at 158A GeV has been carried out in the CERN WA98 experiment. The invariant yield of direct photons in central collisions is extracted as a function of transverse momentum in the interval 0.51.5 GeV/c. The result constitutes the first observation of direct photons in ultrarelativistic heavy-ion collisions. It could be significant for diagnosis of quark-gluon-plasma formation.
Authors
Aggarwal MM; Agnihotri A; Ahammed Z; Angelis ALS; Antonenko V; Arefiev V; Astakhov V; Avdeitchikov V; Awes TC; Baba PVKS
Journal
Physical Review Letters, Vol. 85, No. 17, pp. 3595–3599
Publisher
American Physical Society (APS)
Publication Date
October 23, 2000
DOI
10.1103/physrevlett.85.3595
ISSN
0031-9007