High p T results for Au+Au collisions at √(s_NN) = 200 GeV

I. Arsene, I.G. Bearden, D. Beavis, C. Besliu, B. Budick, H. Bøggild, C. Chasman, C.H. Christensen, P. Christiansen, J. Cibor,R. Debbe, E. Enger,J.J. Gaardhøje, M. Germinario, K. Hagel, O. Hansen, A. Holm, H. Ito, A. Jipa, F. Jundt,J.I. Jørdre, C.E. Jørgensen, R. Karabowicz,E.J. Kim, T. Kozik, T.M. Larsen,J.H. Lee, Y.K. Lee, S. Lindal, R. Lystad, G. Løvhøiden, Z. Majka, A. Makeev,B. McBreen, M. Mikelsen, M. Murray, J. Natowitz, B. Neumann,B.S. Nielsen,J. Norris, D. Ouerdane, R. Płaneta, F. Rami, P. Staszel, C. Ristea, O. Ristea, D. Röhrich,B. H. Samset, D. Sandberg,S.J. Sanders, R.A. Scheetz, T.S. Tveter, F. Videbæk, R. Wada, Z. Yin, I.S. Zgura

The European Physical Journal C - Particles and Fields（2004）

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摘要

We present transverse momentum spectra of unidentified charged hadrons at two pseudo-rapidities ( η = 0, 2.2) as well as the first results on identified negatively charged pions at rapidity 2.2 from Au+Au collisions at √(s_NN) = 200 GeV. The high p T yields of charged hadrons in the most central collisions show a strong suppression when compared to expected binary-scaled yields from nucleon-nucleon collisions or semi-peripheral collisions. The π – spectra at forward rapidity ( y = 2.2) also indicate a clear suppression of high p T π – yields in central collisions. PACS: 25.75.Dw Particle and resonance production

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关键词

Transverse Momentum,Strong Suppression,Central Collision,Momentum Spectrum,Charged Hadron

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