Inclusive cross-sections for jet production in nucleus-nucleus collisions in perturbative QCD

Details Inclusive cross-sections for jet production in nucleus-nucleus collisions in perturbative QCD Inclusive cross-sections for jet production in nucleus-nucleus collisions in perturbative QCD

2004-07-29

arxiv.org/abs/hep-ph/0407346v1

Phys.Lett. B599 (2004) 269-277

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 8 figures

Scientific paper

10.1016/j.physletb.2004.08.054

Inclusive cross-sections for gluon jet production are studied numerically in the perturbative QCD pomeron model for central collisions of identical nuclei 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 0.8$\div$ 09 for momenta $k$ below the saturation momentum $Q_s$. Above $Q_s$ no difference was found at all. The gluon spectrum was found to be $\sim A$ for $kQ_s$. At large $k$ the spectrum falls as $1/k^{2.7\div 3.3}$ flattening with energy. The multiplicities are proportional to $A$ with a good precision. Their values are high amd grow rapidly with energy.

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