First Results from Photon Multiplicity Detector at RHIC

B Mohanty, Star Collaboration
2006 Journal of Physics, Conference Series  
We present the first measurement of multiplicity and pseudorapidity distributions of photons in the pseudorapidity region 2.3 < eta < 3.7 for different centralities in Au + Au collisions at sqrts_NN = 62.4 GeV. The pseudorapidity distribution of photons, dominated by neutral pion decays, has been compared to those of identified charged pions, photons, and inclusive charged particles from heavy ion and nucleon-nucleon collisions at various energies. Scaling of photon yield with number of
more » ... ating nucleons and limiting fragmentation scenario for inclusive photon production has been studied.
doi:10.1088/1742-6596/50/1/039 fatcat:zlq2dwzqpzhzrk6qgnllzxkgr4