Common Suppression Pattern of eta and pi^0 Mesons at High Transverse Momentum in Au+Au Collisions at sqrt(s_NN) = 200 GeV

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dc.creatorPHENIX Collaboration
dc.creatorAdler, S. S.
dc.date2006-01-26
dc.date.accessioned2026-07-07T11:59:57Z
dc.date.available2026-07-07T11:59:57Z
dc.descriptionInclusive transverse momentum spectra of eta mesons have been measured within p_T = 2-10 GeV/c at mid-rapidity by the PHENIX experiment in Au+Au collisions at sqrt(s_NN) = 200 GeV. In central Au+Au the eta yields are significantly suppressed compared to peripheral Au+Au, d+Au and p+p yields scaled by the corresponding number of nucleon-nucleon collisions. The magnitude, centrality and p_T dependence of the suppression is common, within errors, for eta and pi^0. The ratio of eta to pi^0 spectra at high p_T amounts to 0.40 < R_eta/pi^0 < 0.48 for the three systems in agreement with the world average measured in hadronic and nuclear reactions and, at large scaled momentum, in e^+e^- collisions.
dc.description331 authors, 6 pages text, 4 figures. 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/0601037
dc.identifierhttp://arxiv.org/abs/nucl-ex/0601037
dc.identifierPhys.Rev.Lett.96:202301,2006
dc.identifierdoi:10.1103/PhysRevLett.96.202301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206746
dc.subjectNuclear Experiment
dc.titleCommon Suppression Pattern of eta and pi^0 Mesons at High Transverse Momentum in Au+Au Collisions at sqrt(s_NN) = 200 GeV
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