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Rapidity dependence of high $p_T$ suppression at $\sqrt{s_{NN}}$=62.4GeV

Authors :
Arsene, I.
Bearden, I. G.
Beavis, D.
Besliu, C.
Budick, B.
Bøggild, H.
Chasman, C.
Christensen, C. H.
Christiansen, P.
Cibor, J.
Debbe, R.
Enger, E.
Gaardhøje, J. J.
Hagel, K.
Ito, H.
Jipa, A.
Jundt, F.
Johnson, E. B.
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, R.
Løvhøiden, G.
Majka, Z.
Mikelsen, M.
Murray, M.
Natowitz, J.
Neumann, B.
Nielsen, B. S.
Ouerdane, D.
Płaneta, R.
Ramiıres, F.
Ristea, C.
Ristea, O.
Röhrich, D.
Samset, B. H.
Sandberg, D.
Sanders, S. J.
Scheetz, R. A.
Staszel, P.
Tveter, T. S.
Videbæk, F.
Wada, R.
Yin, Z.
Yang, H.
Zgura, I. S.
Département Recherches Subatomiques (DRS-IPHC)
Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)
BRAHMS
Publication Year :
2006
Publisher :
HAL CCSD, 2006.

Abstract

We present measurements of charged hadron p_T spectra from Au+Au collisions at sqrt(snn)=62.4 GeV for pseudorapidities eta=0, eta=1 and eta=3.2. Around midrapidity (eta=0, eta=1) we find nuclear modification factors at levels suggesting a smaller degree of high p_T suppression than in the same reaction at higher energy sqrt(snn)=200 GeV. At the high pseudorapidity, eta=3.2, where nuclear modification factors cannot be constructed due to the lack of p+p reference data, we find a significant reduction of R_{CP} (central to peripheral ratio) as compared to midrapidity.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....864bf7344712d7b5bced61059467db93