Charged multiplicities in pp and AA collisions at LHC

Details Charged multiplicities in pp and AA collisions at LHC Charged multiplicities in pp and AA collisions at LHC

2011-10-31

arxiv.org/abs/1110.6839v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 4 figures, 2 tables To be published in EPJC

Scientific paper

The mid-rapidity charged particle multiplicities in pp and AA collisions at LHC energies are described in the framework of a generalized eikonal model with shadowing corrections incorporated in AA. We show that the pp data require a Pomeron intercept close to 1.2, higher than the conventional one close to 1.1. An $s^{0.11}$ energy dependence is obtained in the LHC range and beyond. The size and centrality dependence of the AA multiplicity at $\sqrt{s} = 2.76$ TeV is reproduced and its energy dependence is predicted.

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