Measurements of photon and π0 production in heavy ion collisions at RHIC Original Research Article

Inclusive transverse momentum spectra of photons and π0 about mid-rapidity are presented for197Au+197Au collisions at View the MathML source GeV. Photon pair conversions have been reconstructed from charged tracks measured with the central Time Projection Chamber (TPC) of STAR. Contributions of the π0 → λλ decay in the inclusive photon spectra have been studied. It was found that this contribution begins to decrease at a transverse momentum of 1.65 GeV/c in the top 11% most central centrality class.