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Leading-particle suppression in high energy nucleus-nucleus collisions

  • experimental physics
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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-p t nuclear modification factor measured in central Au-Au collisions at \(\sqrt{s_{\rm NN}} = 200\) GeV. Once tuned, the model is consistently applied to all the high-p t 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 presented. The limits of the eikonal approximation in the BDMPS approach, when applied to finite-energy partons, are discussed.

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Authors and Affiliations

  1. Universitá degli Studi di Padova and INFN, via Marzolo 8, 35131, Padova, Italy

    A. Dainese

  2. Institut für Kernphysik, August-Euler-Str. 6, 60486, Frankfurt am Main, Germany

    C. Loizides

  3. Instituto de Ciencias Nucleares, UNAM, Mexico City, Mexico

    G. Paic

Authors
  1. A. Dainese
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  2. C. Loizides
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  3. G. Paic
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Corresponding author

Correspondence to A. Dainese.

Additional information

Received: 25 June 2004, Revised: 3 November 2004, Published online: 17 December 2004

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Dainese, A., Loizides, C. & Paic, G. Leading-particle suppression in high energy nucleus-nucleus collisions. Eur. Phys. J. C 38, 461–474 (2005). https://doi.org/10.1140/epjc/s2004-02077-x

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