Tuesday, February 14, 2006, 11:00 am — Small Seminar Room, Bldg. 510
Inclusive transverse momentum spectra of eta mesons have been measured within pT = 2-10 GeV/c at midrapidity 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 pT dependence of the suppression is common, within errors, for eta and pi0. The ratio of eta to pi0 spectra at high pT amounts to 0.40 < R(eta/pi0) < 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.
Hosted by: Frank Laue
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