Particle Production at high pt in heavy ion collisions

by Carlos Salgado (CERN TH)

Friday 21 Jun 2002, 12:40 → 13:40 Europe/Zurich

40-S2-B01 (CERN)

The ALICE experiment plans to measure hadronic transverse momentum spectra in nucleus-nucleus collisions at 5.5 TeV/A center of mass energy up to p_t \approx 100 GeV. One of the main motivation for this is to extract from the nuclear modifications of the measured spectra information about the hot and dense matter created in the collision region. In this talk, I shall describe our current theoretical understanding of how to incorporate initial and final state medium effects in high-pt particle production in the context of LO perturbative QCD. Initial state effects are described by nuclear modifications to parton distribution functions and final state effects by medium-modified fragmentation functions. Constraints from present data in the two mechanisms will be presented as well as the expectations for the LHC. Computer codes easy to implement in MC event generators are available for both cases.

Organiser(s): Yiota Foka, Guy Paic and Urs Wiedemann / EP Division

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