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Long-range angular correlations of π, K and p in p-Pb collisions at √sNN=5.02 TeV

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Angular correlations between unidentified charged trigger particles and various species of charged associated particles (unidentified particles, pions, kaons, protons and antiprotons) are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV in the...

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Autori principali: Abelev, Betty (Autore) , Angelov, Venelin (Autore) , Bock, Friederike (Autore) , Busch, Oliver (Autore) , Fasel, Markus (Autore) , Glässel, Peter (Autore) , Grajcarek, Robert (Autore) , Herrmann, Norbert (Autore) , Klein, Jochen (Autore) , Kweon, MinJung (Autore) , Lohner, Daniel (Autore) , Lu, Xianguo (Autore) , Maire, Antonin (Autore) , Mercado Pérez, Jorge (Autore) , Oeschler, Helmut (Autore) , Oyama, Ken (Autore) , Pachmayer, Yvonne C. (Autore) , Reidt, Felix (Autore) , Reygers, Klaus (Autore) , Schicker, Rainer (Autore) , Stachel, Johanna (Autore) , Stiller, Johannes Hendrik (Autore) , Ulrich, Joachim (Autore) , Völkl, Martin (Autore) , Wang, Yifei (Autore) , Wilkinson, Jeremy (Autore) , Windelband, Bernd (Autore) , Winn, Michael (Autore) , Zimmermann, Alice (Autore)
Ente Autore: ALICE (Autore)
Natura: Article (Journal)
Lingua:inglese
Pubblicazione: 19 August 2013
In: Physics letters
Year: 2013, Volume: 726, Fascicolo: 1/3, Pages: 164-177
ISSN:1873-2445
DOI:10.1016/j.physletb.2013.08.024
Accesso online:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2013.08.024
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269313006503
Testo
Note sull'autore:ALICE Collaboration
Descrizione
Riassunto:Angular correlations between unidentified charged trigger particles and various species of charged associated particles (unidentified particles, pions, kaons, protons and antiprotons) are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV in the transverse-momentum range 0.3<pT<4 GeV/c. The correlations expressed as associated yield per trigger particle are obtained in the pseudorapidity range |ηlab|<0.8. Fourier coefficients are extracted from the long-range correlations projected onto the azimuthal angle difference and studied as a function of pT and in intervals of event multiplicity. In high-multiplicity events, the second-order coefficient for protons, v2p, is observed to be smaller than that for pions, v2π, up to about pT=2 GeV/c. To reduce correlations due to jets, the per-trigger yield measured in low-multiplicity events is subtracted from that in high-multiplicity events. A two-ridge structure is obtained for all particle species. The Fourier decomposition of this structure shows that the second-order coefficients for pions and kaons are similar. The v2p is found to be smaller at low pT and larger at higher pT than v2π, with a crossing occurring at about 2 GeV/c. This is qualitatively similar to the elliptic-flow pattern observed in heavy-ion collisions. A mass ordering effect at low transverse momenta is consistent with expectations from hydrodynamic model calculations assuming a collectively expanding system.
Descrizione del documento:Im Titel steht "sNN" unter dem Wurzelsymbol
Im Titel ist "NN" in sNN tiefgestellt
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, J. Wilkinson, B. Windelband, M. Winn, A. Zimmermann und weitere 917
Gesehen am 28.04.2021
Descrizione fisica:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2013.08.024

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