N ov 2 00 2 1 Measurements of Photon and π 0 Production in Heavy Ion Collisions at RHIC
نویسنده
چکیده
Inclusive transverse momentum spectra of photons and π 0 s about mid–rapidity are presented for 197 Au+ 197 Au collisions at √ s NN = 130 GeV. Photon pair conversions have been reconstructed from charged tracks measured with the central Time Projection Chamber (TPC) of STAR. Contributions of the π 0 → γγ 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.
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