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arxiv: 0909.2199 · v3 · submitted 2009-09-11 · ✦ hep-ph

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

R.Arnaldi , P.Cortese , E. Scomparin This is my paper
classification ✦ hep-ph
keywords collisionsjpsideterminationeffectspartonreferenceresultsrole
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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.

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