Production of omega mesons at Large Transverse Momenta in p+p and d+Au Collisions at sqrt(s_NN) = 200 GeV

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dc.creatorPHENIX Collaboration
dc.creatorAdler, S. S.
dc.date2006-11-17
dc.date.accessioned2026-07-07T12:00:05Z
dc.date.available2026-07-07T12:00:05Z
dc.descriptionThe PHENIX experiment at RHIC has measured the invariant cross section for omega-meson production at mid-rapidity in the transverse momentum range 2.5 < p_T < 9.25 GeV/c in p+p and d+Au collisions at sqrt(s_NN) = 200 GeV. Measurements in two decay channels (omega --> pi^0 pi^+ pi^- and omega --> pi^0 gamma) yield consistent results, and the reconstructed omega mass agrees with the accepted value within the p_T range of the measurements. The omega/pi^0 ratio is found to be 0.85 +/- 0.05(stat) +/- 0.09(sys) and 0.94 +/- 0.08(stat) +/- 0.12(sys) in p+p and d+Au collisions respectively, independent of p_T . The nuclear modification factor R_dA is 1.03 +/- 0.12(stat) +/- 0.21(sys) and 0.83 +/- 0.21(stat) +/- 0.17(sys) in minimum bias and central (0-20%) d+Au collisions, respectively.
dc.description330 authors, 6 pages text, 4 figures, 1 table. Submitted to Phys. Rev. Lett. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html
dc.identifierhttps://arxiv.org/abs/nucl-ex/0611031
dc.identifierhttp://arxiv.org/abs/nucl-ex/0611031
dc.identifierPhys.Rev.C75:051902,2007
dc.identifierdoi:10.1103/PhysRevC.75.051902
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206773
dc.subjectNuclear Experiment
dc.titleProduction of omega mesons at Large Transverse Momenta in p+p and d+Au Collisions at sqrt(s_NN) = 200 GeV
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