Charged-particle multiplicities in proton-proton collisions at root s=0.9 to 8 TeV

0475650 - ÚJF 2018 RIV US eng J - Journal Article
Adam, J. - Adamová, Dagmar - Bielčík, J. - Bielčíková, Jana - Broz, M. - Čepila, J. - Contreras, J. G. - Eyyubova, G. - Ferencei, Jozef - Křížek, Filip - Kučera, Vít - Mareš, Jiří A. - Petráček, V. - Pospíšil, Jan - Schulc, M. - Špaček, M. - Šumbera, Michal - Vajzer, Michal - Vaňát, Tomáš - Závada, Petr … Total 985 authors
Charged-particle multiplicities in proton-proton collisions at root s=0.9 to 8 TeV.
European Physical Journal C. Roč. 77, č. 1 (2017), č. článku 33. ISSN 1434-6044. E-ISSN 1434-6052
R&D Projects: GA MŠMT(CZ) LG15052
Institutional support: RVO:68378271 ; RVO:61389005
Keywords : ALICE collaboration * heavy ion collisions * cross section
OECD category: Nuclear physics; Particles and field physics (FZU-D)
Impact factor: 5.172, year: 2017

A detailed study of pseudorapidity densities and multiplicity distributions of primary charged particles produced in proton-proton collisions, atv root s = 0.9, 2.36, 2.76, 7 and 8 TeV, in the pseudorapidity range vertical bar n vertical bar< 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 vertical bar n vertical bar<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 vertical bar n vertical bar< 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.
Permanent Link: http://hdl.handle.net/11104/0272310