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arXiv · 0707.2545

Particle multiplicities in Lead-Lead collisions at the LHC from non-linear evolution with running coupling

Javier L. Albacete
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Abstract

We present predictions for the pseudo-rapidity density of charged particles produced in central Pb-Pb collisions at the LHC. Particle production in such collisions is calculated in the framework of k_t-factorization. The nuclear unintegrated gluon distributions at LHC energies are determined from numerical solutions of the Balitsky-Kovchegov equation including recently calculated running coupling corrections. The initial conditions for the evolution are fixed by fitting RHIC data at collision energies \sqrt{s}}=130 and 200 GeV per nucleon. We obtain dN^{Pb-Pb}_{ch}/dη(\sqrt{s}=5.5 TeV, η=0)\approx 1290÷1480.

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Javier L. Albacete. 2007-10-22. Particle multiplicities in Lead-Lead collisions at the LHC from non-linear evolution with running coupling. https://doi.org/10.1103/physrevlett.99.262301

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