Interferometry of Direct Photons in Central 280Pb+208Pb Collisions at 158A GeV

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

References in corpus (4)

• Hadronic Production of Thermal Photons
• Two-Particle Correlations in Relativistic Heavy-Ion Collisions
• Observation of Direct Photons in Central 158 A GeV 208Pb+208Pb Collisions
• Photon interferometry and size of the hot zone in relativistic heavy ion collisions

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