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

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|<...

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Main Authors: Abelev, Betty (Author) , Angelov, Venelin (Author) , Bock, Friederike (Author) , Busch, Oliver (Author) , Fasel, Markus (Author) , Glässel, Peter (Author) , Grajcarek, Robert (Author) , Herrmann, Norbert (Author) , Klein, Jochen (Author) , Kweon, MinJung (Author) , Lohner, Daniel (Author) , Lu, Xianguo (Author) , Maire, Antonin (Author) , Mercado Pérez, Jorge (Author) , Oeschler, Helmut (Author) , Oyama, Ken (Author) , Pachmayer, Yvonne C. (Author) , Reidt, Felix (Author) , Reygers, Klaus (Author) , Schicker, Rainer (Author) , Stachel, Johanna (Author) , Stiller, Johannes Hendrik (Author) , Ulrich, Joachim (Author) , Völkl, Martin (Author) , Wang, Yifei (Author) , Windelband, Bernd (Author) , Winn, Michael (Author) , Zimmermann, Alice (Author)
Corporate Author: ALICE (Author)
Format: Article (Journal)
Language:English
Published: 29 October 2013
In: Physics letters
Year: 2013, Volume: 727, Issue: 4/5, Pages: 371-380
ISSN:1873-2445
DOI:10.1016/j.physletb.2013.10.054
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2013.10.054
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269313008617
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Author Notes:ALICE Collaboration
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Summary: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 Description:The ALICE collaboration: B. Abelev, V. Angelov, F. Bock, O. Busch, M. Fasel, P. Glässel, R. Grajcarek, N. Herrmann, J. Klein, M.J. Kweon, D. Lohner, X.-G. Lu, A. Maire, J. Mercado-Pérez, H. Oeschler, K. Oyama, Y. Pachmayer, F. Reidt, K. Reygers, R. Schicker, J. Stachel, J.H. Stiller, J. Ulrich, M.A. Völkl, Y. Wang, B. Windelband, M. Winn, A. Zimmermann und weitere 953
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Physical Description:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2013.10.054

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