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Centrality dependence of the nuclear modification factor of charged pions, kaons, and protons in Pb- Pb collisions at √sNN=2.76 TeV (CROSBI ID 236273)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

(ALICE Collaboration) Adam, J. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Mudnić, Eugen ; ... et al. Centrality dependence of the nuclear modification factor of charged pions, kaons, and protons in Pb- Pb collisions at √sNN=2.76 TeV // Physical review. C, 93 (2016), 3; 034913, 31. doi: 10.1103/PhysRevC.93.034913

Podaci o odgovornosti

Adam, J. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Utrobičić, Antonija ; ... ; Vicković, Linda ; ... ; Zyzak, M.

ALICE Collaboration

engleski

Centrality dependence of the nuclear modification factor of charged pions, kaons, and protons in Pb- Pb collisions at √sNN=2.76 TeV

Transverse momentum (pT) spectra of pions, kaons, and protons up to pT=20 GeV/c have been measured in Pb-Pb collisions at √sNN=2.76 TeV using the ALICE detector for six different centrality classes covering 0-80%. The proton-to-pion and the kaon-to-pion ratios both show a distinct peak at pT≈3 GeV/c in central Pb-Pb collisions that decreases towards more peripheral collisions. For pT>10 GeV/c, the nuclear modification factor is found to be the same for all three particle species in each centrality interval within systematic uncertainties of 10-20%. This suggests there is no direct interplay between the energy loss in the medium and the particle species composition in the hard core of the quenched jet. For pT< 10 GeV/c, the data provide important constraints for models aimed at describing the transition from soft to hard physics.

centrality dependance ; nuclear modification factor ; lead-lead

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Podaci o izdanju

93 (3)

2016.

034913

31

objavljeno

2469-9985

2469-9993

10.1103/PhysRevC.93.034913

Povezanost rada

Fizika

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