Cold Nuclear Modifications at RHIC and LHC

2008/05/21 by G. G. Barnaföldi, Barnaföldi, G. G., G. Fai +7
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.0805.3360

4 pages, 3 figures, Contribution to the 20th International Conference on Nucleus Nucleus Collisions, Quark Matter 2008, February 4-10, 2008, India Jaipur

arxiv created 2008/05/21 · arxiv updated 2009/12/01

Abstract

We use recent nuclear parton distributions, among them the Hirai--Kumano--Nagai (HKN) and Eskola--Paukkunen--Salgado (EPS08) parameterizations, in our pQCD-improved parton model to calculate the nuclear modification factor, R_AA'(p_T), at RHIC and at the LHC. At RHIC, the deuteron-gold nuclear modification factor for pions, measured at p_T > 10 GeV/c in central collisions, appears to deviate more from unity than the model results. The slopes of the calculated R_dAu(p_T) are similar to the slopes of the PHENIX pion and photon data. At LHC, without final-state effects we see a small enhancement of R_dPb(p_T) in the transverse momentum range 10 GeV/c < p_T < 100 GeV/c for most parameterizations. The inclusion of final-state energy loss will reduce the R_dPb(p_T) values.

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