Transverse momentum dependence of J/psi shadowing effects

Details Transverse momentum dependence of J/psi shadowing effects Transverse momentum dependence of J/psi shadowing effects

2008-01-31

arxiv.org/abs/0801.4949v2

Eur.Phys.J.C61:859-864,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 figures. Final version for journal submission

Scientific paper

10.1140/epjc/s10052-008-0843-8

We present a new approach to estimate the effect of the gluon shadowing in nucleus+nucleus collisions and its consequences on the J/psi production yield. Using kinematical information available from the measured J/psi production in proton+proton collisions at \sqrt s = 200 GeV, we build a Glauber Monte Carlo code which takes into account shadowing in two alternative ways: multiple scattering corrections or Q2 evolution of parton densities. We exploit the dependence of these different parameterizations to the J/psi transverse momentum and we give the first predictions on the resulting pT dependence of the nuclear modification factor in deuteron+gold collisions at the same energy.

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