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Measurements of Photon and Neutral Pion Production in Heavy Ion Collisions at RHIC

I. J. Johnson
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Abstract

Inclusive transverse momentum spectra of photons and neutral pions about mid-rapidity are presented for Au+Au collisions at sqrt(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 pi^0 -> γγdecay 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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I. J. Johnson. 2002-11-02. Measurements of Photon and Neutral Pion Production in Heavy Ion Collisions at RHIC. https://doi.org/10.1016/s0375-9474(02)01468-9

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