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Leading-particle suppression in high energy nucleus-nucleus collisions | | A. Dainese
; C. Loizides
; G. Paic
; | | Date: |
18 Jun 2004 | | Journal: | Eur.Phys.J. C38 (2005) 461-474 | | Subject: | hep-ph nucl-ex nucl-th | | Affiliation: | Padova U. and INFN), C. Loizides (Frankfurt U., Inst. Kernphys.), G. Paic (Mexico City U., ICN | | Abstract: | Parton energy loss effects in heavy-ion collisions are studied with the Monte Carlo program PQM (Parton Quenching Model) constructed using the BDMPS quenching weights and a realistic collision geometry. The merit of the approach is that it contains only one free parameter that is tuned to the high-pt nuclear modification factor measured in central Au-Au collisions at sqrt{s_NN} = 200 GeV. Once tuned, the model is coherently applied to all the high-pt observables at 200 GeV: the centrality evolution of the nuclear modification factor, the suppression of the away-side jet-like correlations, and the azimuthal anisotropies for these observables. Predictions for the leading-particle suppression at nucleon-nucleon centre-of-mass energies of 62.4 and 5500 GeV are calculated. The limits of the eikonal approximation in the BDMPS approach, when applied to finite-energy partons, are discussed. | | Source: | arXiv, hep-ph/0406201 | | Services: | Forum | Review | PDF | Favorites | |
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