J/psi production in the saturation regime

In this work we calculate the J/psi production in the initial stage of proton-proton, proton-nucleus and nucleus-nucleus collisions at RHIC and LHC energies, taking into account the high parton density regime of QCD, where the physics of parton saturation is expected to be dominant. We perform a qua...

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Bibliographic Details
Published in:Brazilian journal of physics 2007-03, Vol.37 (1a), p.114-117
Main Author: Durães, F. O.
Format: Article
Language:English
Subjects:
PHYSICS, MULTIDISCIPLINARY
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Summary:In this work we calculate the J/psi production in the initial stage of proton-proton, proton-nucleus and nucleus-nucleus collisions at RHIC and LHC energies, taking into account the high parton density regime of QCD, where the physics of parton saturation is expected to be dominant. We perform a quantitative analysis of the xF distributions in these collisions with the Color Glass Condensate (CGC) approach. The ratio between distributions with or without saturated gluons shows that this mechanism produces a suppression on the J/psi yield in the forward region and presents a dip in intermediate values of xF, which is visible only at LHC energies.
ISSN:0103-9733
1678-4448
DOI:10.1590/S0103-97332007000100033