Jet production in pA and AA collisions in the perturbative QCD pomeron model

Details Jet production in pA and AA collisions in the perturbative QCD pomeron model Jet production in pA and AA collisions in the perturbative QCD pomeron model

2004-10-12

arxiv.org/abs/hep-ph/0410164v1

Eur.Phys.J. C39 (2005) 451-464

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 16 figures

Scientific paper

10.1140/epjc/s2004-02098-5

Inclusive cross-sections for gluon jet production are studied numerically in the perturbative QCD pomeron model for pA and central AA collisions at high energies. Two forms for the inclusive cross-sections, with and without emission from the triple pomeron vertex, are compared. The difference was found to reduce to a numerical factor 0.7-0.8 for momenta below the saturation momentum Q_s. Above Q_s no difference was found at all. For pA collisions the jet spectrum was found to be \sim A^{0.7} at momenta below Q_s and \sim A^{0.9} above it. For central AA collisions it was found to be \sim A below Q_s and \sim A^{1.1} above it. At large momenta k the spectrum goes like 1/k^{2.7 - 3.3} flattenung with energy.

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