Perturbative QCD Results on Pion Production in pp, pA and AA Collisions

Details Perturbative QCD Results on Pion Production in pp, pA and AA Collisions Perturbative QCD Results on Pion Production in pp, pA and AA Collisions

2002-06-04

arxiv.org/abs/nucl-th/0206006v1

Heavy Ion Phys.18:79-89,2003

Physics

Nuclear Physics

Nuclear Theory

Talk given at Budapest Workshop on Quark and Hadron Dynamics in Relativistic Heavy Ion Collisions (BP 2002) Budapest, Hungary,

Scientific paper

10.1556/APH.18.2003.1.9

We summarize new pQCD results on pion production in proton-proton (pp), proton-nucleus (pA) and nucleus-nucleus (AA) collisions. Our calculation introduces intrinsic parton transverse momentum (k_T) and is performed effectively at next-to-leading order (NLO), applying a K factor extracted for jet events. Two different factorization scales, Q=p_{T,jet}/2 and p_{T,jet} are used. Experimental data in pA collisions imply a preference for the latter choice at NLO level. We display our results at CERN SPS for AA collisions.

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