Pion, kaon, and proton production in central Pb-pb collisions at √sNN=2.76  TeV B. Abelev et al.* (ALICE Collaboration) 

Erscheinungsform: Aufsatz
Beteiligte:
  • Abelev, Betty
  • Busch, Oliver
  • Engel, Heiko
  • Glässel, Peter
  • Grajcarek, Robert
  • Herrmann, Norbert
  • Krawutschke, Tobias
  • Kweon, MinJung
  • Lara Martinez, Camilo Ernesto
  • Lohner, Daniel
  • Mercado Pérez, Jorge
  • Oyama, Ken
  • Pachmayer, Yvonne C.
  • Reygers, Klaus
  • Schicker, Rainer
  • Schweda, Kai
  • Stachel, Johanna
  • Ulrich, Joachim
  • Vallero, Sara
  • Wiechula, Jens
  • Windelband, Bernd
  • Zelnicek, Pierre
  • Zimmermann, Alice
Körperschaft: ALICE
Umfang: 11
Nebentitel: sqrt (s_NN)
Anmerkungen: Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol, "NN" ist dabei tiefgestellt
B. Abelev, O. Busch, H. Engel, P. Glässel, R. Grajcarek, N. Herrmann, T. Krawutschke, M.J. Kweon, C. Lara, D. Lohner, J. Mercado Pérez, K. Oyama, Y. Pachmayer, K. Reygers, R. Schicker, K. Schweda, J. Stachel, J. Ulrich, S. Vallero, J. Wiechula, B. Windelband, P. Zelnicek, A. Zimmermann [und weitere]
Gesehen am 30.11.2018
Identifikatoren/​Sonstige Nummern: 1582704007 [PPN]
In: College Park, Md. : APS, 1958 109(2012), 25, Artikel-ID 252301 volume:109 year:2012 number:25 elocationid:252301 extent:11
Inhalt:
  • In this Letter we report the first results on π±, K±, p, and ¯p production at midrapidity (|y|<0.5) in central Pb-Pb collisions at √sNN=2.76 TeV, measured by the ALICE experiment at the LHC. The pT distributions and yields are compared to previous results at √sNN=200 GeV and expectations from hydrodynamic and thermal models. The spectral shapes indicate a strong increase of the radial flow velocity with √sNN, which in hydrodynamic models is expected as a consequence of the increasing particle density. While the K/π ratio is in line with predictions from the thermal model, the p/π ratio is found to be lower by a factor of about 1.5. This deviation from thermal model expectations is still to be understood.
URL: http://dx.doi.org/10.1103/PhysRevLett.109.252301
Weiter im Partnersystem: https://swb.bsz-bw.de/DB=2.1/PPNSET?PPN=1582704007
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