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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Hauptverfasser: Abelev, Betty (VerfasserIn) , Angelov, Venelin (VerfasserIn) , Bock, Friederike (VerfasserIn) , Busch, Oliver (VerfasserIn) , Fasel, Markus (VerfasserIn) , Glässel, Peter (VerfasserIn) , Grajcarek, Robert (VerfasserIn) , Herrmann, Norbert (VerfasserIn) , Klein, Jochen (VerfasserIn) , Kweon, MinJung (VerfasserIn) , Lohner, Daniel (VerfasserIn) , Lu, Xianguo (VerfasserIn) , Maire, Antonin (VerfasserIn) , Mercado Pérez, Jorge (VerfasserIn) , Oeschler, Helmut (VerfasserIn) , Oyama, Ken (VerfasserIn) , Pachmayer, Yvonne C. (VerfasserIn) , Reidt, Felix (VerfasserIn) , Reygers, Klaus (VerfasserIn) , Schicker, Rainer (VerfasserIn) , Stachel, Johanna (VerfasserIn) , Stiller, Johannes Hendrik (VerfasserIn) , Ulrich, Joachim (VerfasserIn) , Völkl, Martin (VerfasserIn) , Wang, Yifei (VerfasserIn) , Windelband, Bernd (VerfasserIn) , Winn, Michael (VerfasserIn) , Zimmermann, Alice (VerfasserIn)
Körperschaft: ALICE (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 29 October 2013
In: Physics letters
Year: 2013, Jahrgang: 727, Heft: 4/5, Pages: 371-380
ISSN:1873-2445
DOI:10.1016/j.physletb.2013.10.054
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2013.10.054
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269313008617
Volltext
Verfasserangaben:ALICE Collaboration
Beschreibung
Zusammenfassung: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.
Beschreibung: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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Beschreibung:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2013.10.054