Details

Autor(en) / Beteiligte

• Ferreiro, E. G.
• Fleuret, F.
• Rakotozafindrabe, A.

Titel

Transverse-momentum dependence of J/ψ shadowing effects

Ist Teil von

• European physical journal. C, Particles and fields (Print), 2009-06, Vol.61 (4), p.859-864

Ort / Verlag

Berlin/Heidelberg: Springer-Verlag

Erscheinungsjahr

2009

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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  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.