# Charged-particle multiplicities in proton-proton collisions at $\sqrt{s}$ = 0.9 to 8 TeV

Abstract : A detailed study of pseudorapidity densities and multiplicity distributions of primary charged particles produced in proton-proton collisions, at $\sqrt{s} =$ 0.9, 2.36, 2.76, 7 and 8 TeV, in the pseudorapidity range $|\eta|<2$, was carried out using the ALICE detector. Measurements were obtained for three event classes: inelastic, non-single diffractive and events with at least one charged particle in the pseudorapidity interval $|\eta|<1$. The use of an improved track-counting algorithm combined with ALICE's measurements of diffractive processes allows a higher precision compared to our previous publications. A KNO scaling study was performed in the pseudorapidity intervals $|\eta|<$ 0.5, 1.0 and 1.5. The data are compared to other experimental results and to models as implemented in Monte Carlo event generators PHOJET and recent tunes of PYTHIA6, PYTHIA8 and EPOS.
Type de document :
Article dans une revue
European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2017, 77, pp.33. 〈10.1140/epjc/s10052-016-4571-1〉
Domaine :

http://hal.in2p3.fr/in2p3-01205848
Contributeur : Sylvie Flores <>
Soumis le : lundi 28 septembre 2015 - 09:06:48
Dernière modification le : mardi 19 juin 2018 - 01:19:12

### Citation

J. Adam, L. Aphecetche, A. Baldisseri, Guillaume Batigne, I. Belikov, et al.. Charged-particle multiplicities in proton-proton collisions at $\sqrt{s}$ = 0.9 to 8 TeV. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2017, 77, pp.33. 〈10.1140/epjc/s10052-016-4571-1〉. 〈in2p3-01205848〉

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