Differences in high p_t meson production between CERN SPS and RHIC heavy ion collisions

Details Differences in high p_t meson production between CERN SPS and RHIC heavy ion collisions Differences in high p_t meson production between CERN SPS and RHIC heavy ion collisions

2002-03-27

arxiv.org/abs/nucl-th/0203075v1

Acta Phys.Polon.B32:4069-4078,2001

Physics

Nuclear Physics

Nuclear Theory

Talk presented by G. Papp at Zakopane 2001 School, Zakopane, 2001 June; 10 pages with 3 EPS figures

Scientific paper

In this talk we present a perturbative QCD improved parton model calculation for light meson production in high energy heavy ion collisions. In order to describe the experimental data properly, one needs to augment the standard pQCD model by the transverse momentum distribution of partons ("intrinsic k_T"). Proton-nucleus data indicate the presence of nuclear shadowing and multiscattering effects. Further corrections are needed in nucleus-nucleus collisions to explain the observed reduction of the cross section. We introduce the idea of proton dissociation and compare our calculations with the SPS and RHIC experimental data.

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