Abstract
We present a new approach to estimate the effect of gluon shadowing in nucleus + nucleus collisions and its consequences on the J/ψ production yield. Using kinematical information available from the measured J/ψ production in proton + proton collisions at \(\sqrt{s_{NN}}=200\) GeV, we build a Glauber Monte Carlo code which takes into account shadowing in two alternative ways: multiple-scattering corrections or Q 2 evolution of parton densities. We exploit the dependence of these different parameterizations to the J/ψ transverse momentum and we give the first predictions on the resulting p T dependence of the nuclear modification factor in deuteron + gold collisions at the same energy.
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Ferreiro, E.G., Fleuret, F. & Rakotozafindrabe, A. Transverse-momentum dependence of J/ψ shadowing effects. Eur. Phys. J. C 61, 859–864 (2009). https://doi.org/10.1140/epjc/s10052-008-0843-8
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DOI: https://doi.org/10.1140/epjc/s10052-008-0843-8