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Arsene, I.; Bearden, I.G.; Beavis, D.; Besliu, C.; Budick, B.; Bøggild, H.; Chasman, C.; Christensen, C.H.; Christiansen, P.; Debbe, R.; Enger, E.; Gaardhøje, J.J.; Germinario, M.; Hagel, K.; Holm, A.; Ito, H.; Jipa, A.; Jundt, F.; Jørdre, J.I.; Jørgensen, C.E.; Karabowicz, R.; Kim, E.J.; Kozik, T.; Larsen, T.M.; Lee, J.H.; Lee, Y.K.; Lindal, S.; Lystad, G.; Løvhøiden, G.; Majka, Z.; Makeev, A.; Mikelsen, M.; Murray, M.; Natowitz, J.; Nielsen, B.S.; Ouerdane, D.; Płaneta, R.; Rami, F.; Ristea, C.; Ristea, O.; Röhrich, D.; Samset, B.H.; Sandberg, D.; Sanders, S.J.; Staszel, P.; Tveter, T.S.; Videbæk, F.; Wada, R.; Yang, H.; Yin, Z.; Zgura, I.S.
Physics letters. B, 07/2007, Letnik: 650, Številka: 4Journal Article
We present spectra of charged pions and protons in 0–10% central Au+Au collisions at sNN=200 GeV at mid-rapidity (y=0) and forward pseudorapidity (η=2.2) measured with the BRAHMS experiment at RHIC. The spectra are compared to spectra from p+p collisions at the same energy scaled by the number of binary collisions. The resulting nuclear modification factors for central Au+Au collisions at both y=0 and η=2.2 exhibit suppression for charged pions but not for (anti-) protons at intermediate pT. The p¯/π− ratios have been measured up to pT∼3 GeV/c at the two rapidities and the results indicate that a significant fraction of the charged hadrons produced at intermediate pT range are (anti-) protons at both mid-rapidity and η=2.2.
