Centrality Dependence of Direct Photon Production in sqrt(s_NN) = 200 GeV Au+Au Collisions

Preprint

7 March 2005

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.nucl-ex/0503003

Abstract

The first measurement of direct photons in Au+Au collisions at sqrt(s_NN) = 200 GeV is presented. The direct photon signal is extracted as a function of the Au+Au collision centrality and compared to NLO pQCD calculations. The direct photon yield is shown to scale with the number of nucleon-nucleon collisions for all centralities.

Keywords

CENTRALITY DEPENDENCE
PHOTON PRODUCTION
DIRECT PHOTON
AU COLLISIONS
COLLISIONS
EXTRACTED
S_NN
SQRT
GEV

All Related Versions

Version 1, 2005-03-07, ArXiv
Published version: Physical Review Letters, 94 (23), 232301.

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