Production of omega mesons in p+p, d+Au, Cu+Cu, and Au+Au collisions at sqrt(s_NN)=200 GeV

Source: arXiv


The PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) has
measured omega meson production via leptonic and hadronic decay channels in
p+p, d+Au, Cu+Cu, and Au+Au collisions at sqrt(s_NN) = 200 GeV. The invariant
transverse momentum spectra measured in different decay modes give consistent
results. Measurements in the hadronic decay channel in Cu+Cu and Au+Au
collisions show that omega production has a suppression pattern at high
transverse momentum, similar to that of pi^0 and eta in central collisions, but
no suppression is observed in peripheral collisions. The nuclear modification
factors, R_AA, are consistent in Cu+Cu and Au+Au collisions at similar numbers
of participant nucleons.

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Available from: Christopher Alan Oakley, Oct 06, 2015
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    ABSTRACT: This is a review of the theoretical background, experimental techniques, and phenomenology of what is called the "Glauber Model" in relativistic heavy ion physics. This model is used to calculate "geometric" quantities, which are typically expressed as impact parameter (b), number of participating nucleons (N_part) and number of binary nucleon-nucleon collisions (N_coll). A brief history of the original Glauber model is presented, with emphasis on its development into the purely classical, geometric picture that is used for present-day data analyses. Distinctions are made between the "optical limit" and Monte Carlo approaches, which are often used interchangably but have some essential differences in particular contexts. The methods used by the four RHIC experiments are compared and contrasted, although the end results are reassuringly similar for the various geometric observables. Finally, several important RHIC measurements are highlighted that rely on geometric quantities, estimated from Glauber calculations, to draw insight from experimental observables. The status and future of Glauber modeling in the next generation of heavy ion physics studies is briefly discussed.
    Annual Review of Nuclear and Particle Science 02/2007; 57(1). DOI:10.1146/annurev.nucl.57.090506.123020 · 11.26 Impact Factor
  • Particle Data Group). . 075021.