REAL

Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC

Abelev, B. and Adam, J. and Adamová, D. and Adare, A. M. and Aggarwal, M. M. and Aglieri, Rinella G. and Agnello, M. and Agócs, András and Agostinelli, A. and Ahammed, Z. and Ahmad, Masoodi A. and Ahmad, N. and Ahmed, I. and Ahn, S. A. and Ahn, S. U. and Aimo, I. and Ajaz, M. and Akindinov, A. and Aleksandrov, D. and Alessandro, B. and Alexandre, D. and Alici, A. and Alkin, A. and Alme, J. and Alt, T. and Altini, V. and Altinpinar, S. and Altsybeev, I. and Andrei, C. and Andronic, A. and Barnaföldi, Gergely Gábor and Bencédi, Gyula and Berényi, Dániel and Boldizsár, László and Dénes, Ervin and Hamar, Gergő and Lévai, Péter and Molnár, Levente and Pochybova, Sona (2013) Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC. PHYSICS LETTERS B, 727 (4-5). pp. 371-380. ISSN 0370-2693

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Abstract

The average transverse momentum 〈pT〉 versus the charged-particle multiplicity Nch was measured in p–Pb collisions at a collision energy per nucleon-nucleon pair √sNN = 5.02 TeV and in pp collisions at collision energies of √s = 0.9, 2.76, and 7 TeV in the kinematic range 0.15 < pT < 10.0 GeV/c and | η| < 0.3 with the ALICE apparatus at the LHC. These data are compared to results in Pb–Pb collisions at √sNN = 2.76 TeV at similar charged-particle multiplicities. In pp and p–Pb collisions, a strong increase of 〈pT〉 with Nch is observed, which is much stronger than that measured in Pb–Pb collisions. For pp collisions, this could be attributed, within a model of hadronizing strings, to multiple-parton interactions and to a final-state color reconnection mechanism. The data in p–Pb and Pb–Pb collisions cannot be described by an incoherent superposition of nucleon-nucleon collisions and pose a challenge to most of the event generators.

Item Type: Article
Subjects: Q Science / természettudomány > QC Physics / fizika
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 09 Aug 2024 09:37
Last Modified: 09 Aug 2024 09:37
URI: https://real.mtak.hu/id/eprint/202229

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