Interferometry of Direct Photons in Central 280Pb+208Pb Collisions at 158A GeV
arXiv:nucl-ex/0310022 · doi:10.1103/PhysRevLett.93.022301
Abstract
Two-particle correlations of direct photons were measured in central 208Pb+208Pb collisions at 158 AGeV. The invariant interferometric radii were extracted for 100<K_T<300 MeV/c and compared to radii extracted from charged pion correlations. The yield of soft direct photons, K_T<300 MeV/c, was extracted from the correlation strength and compared to theoretical calculations.
5 pages, 4 figures