학술논문
Rapidity dependence of high p_T suppression at sqrt{s_{NN}}=62.4{GeV}
Document Type
Working Paper
Author
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.
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Subject
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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.