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

Journal Article · Fri Jan 15 00:00:00 EST 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.014903· OSTI ID:21386558

Arnaldi, R; Scomparin, E ^[1]; Cortese, P ^[1]

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1. INFN, I-10125 Torino (Italy)

The observation of an anomalous J/psi suppression in nucleus-nucleus collisions is one of the most important results of the Super Proton Synchrotron (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 J/psi 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.

• OSTI ID: 21386558
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 81, Issue 1; Other Information: DOI: 10.1103/PhysRevC.81.014903; (c) 2010 The American Physical Society; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATOM-ATOM COLLISIONS
CERN
CERN SPS SYNCHROTRON
COLLISIONS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
FUNCTIONS
HEAVY IONS
INDIUM
ION-ATOM COLLISIONS
LEAD
NUCLEI
PARTICLE RAPIDITY
PROTONS
SYNCHROTRONS
ACCELERATORS
ATOM COLLISIONS
BARYONS
CHARGED PARTICLES
CYCLIC ACCELERATORS
ELEMENTARY PARTICLES
ELEMENTS
EVALUATION
FERMIONS
HADRONS
INTERNATIONAL ORGANIZATIONS
ION COLLISIONS
IONS
METALS
NUCLEONS
PARTICLE PROPERTIES
SIMULATION