Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2005-10-06
Nucl.Phys. A774 (2006) 735-738
Physics
High Energy Physics
High Energy Physics - Experiment
4 pages, 5 figures, proceedings to QM2005
Scientific paper
The PHENIX experiment at RHIC measured the omega-meson production in the range of pT from 2.5 GeV/c to 9.5 GeV/c in p+p and d+Au collision systems at sqrt{s_{NN}}=200 GeV. We present the consistent results of two independent measurements in decay channels omega-->pi^{0}pi^{+}pi^{-}$ and omega-->pi^{0}gamma. The omega/pi^{0} ratio was found to be 0.90+/-0.06. The Nuclear Modification Factor R_{dA} is 1.3+/-0.2 both in the Minimum Biased and (0%-20%) central event samples. The mass of the omega-meson was measured to be consistent with the PDG value within the errors of the measurement. We also measured the K_{S}^{0}-meson production in K_{S}^{0}-->pi^{0}pi^{0} in the same collision systems.
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