Proton-proton multiplicity distributions at LHC and the Pomeron intercept

preprint2013arXivOpen access

Abstract

We compute the proton-proton multiplicity distributions at LHC energies in the framework of a multiple scattering model assuming a Poisson distribution for each inelastic collision. Multiple scattering is essential to broaden the multiplicity distribution. We obtain approximate KNO scaling for small pseudo-rapidity intervals (∣η∣<0.5|η| < 0.5) and sizable KNO scaling violations for larger ones, in agreement with experiment.

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