Role of parton shadowing in the comparison of p-A and A-A results on jpsi suppression at energies available at the CERN Super Proton Synchrotron

Abstract

The observation of an anomalous jpsi suppression in nucleus-nucleus collisions is one of the most important results of the SPS heavy-ion program. An essential ingredient in this result is the determination, obtained by studying p-A collisions, of effects not related with the formation of a deconfined medium. These effects are extrapolated to A-A collisions, determining a reference jpsi yield that is then compared with the measurements. In this article we investigate the role of parton shadowing on the determination of such a reference, and we calculate its effect for In-In and Pb-Pb collisions as a function of rapidity and centrality.

6 pages, 6 figures, final version published in Phys. Rev. C 81 (2010) 014903

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• Determination of nuclear parton distribution functions and their uncertainties at next-to-leading order
• Centrality Dependence of pi^0 and eta Production at Large Transverse Momentum in sqrt(s_NN) = 200 GeV d+Au Collisions
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Cited by in corpus (5)

• Heavy quarkonium: progress, puzzles, and opportunities
• Quarkonia in the Quark Gluon Plasma
• J/psi production in p-A collisions at 158 and 400 GeV: recent results from the NA60 experiment
• J/$\psi$ yields in low energy nuclear collisions at SPS and FAIR: A baseline estimation
• Charmonium interaction in nuclear matter at FAIR