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Charged multiplicities in pp and AA collisions at LHC

  • Regular Article - Theoretical Physics
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Abstract

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 \(\sqrt{s} =2.76\ \mathrm{TeV}\) is reproduced and its energy dependence is predicted.

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Authors and Affiliations

  1. Laboratoire de Physique Théorique (Unité Mixte de Recherche UMR n° 8627—CNRS), Université de Paris XI, Bâtiment 210, 91405, Orsay Cedex, France

    A. Capella

  2. Departamento de Física de Partículas and IGFAE, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain

    E. G. Ferreiro

Authors
  1. A. Capella
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  2. E. G. Ferreiro
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Correspondence to E. G. Ferreiro.

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Capella, A., Ferreiro, E.G. Charged multiplicities in pp and AA collisions at LHC. Eur. Phys. J. C 72, 1936 (2012). https://doi.org/10.1140/epjc/s10052-012-1936-y

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  • DOI: https://doi.org/10.1140/epjc/s10052-012-1936-y

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