Probing medium-modified fragmentation processes with prompt photons

descriptionPublicationkeyboard_double_arrow_right Article 01 Feb 2007 English Publisher:Elsevier BVJournal:Nuclear Physics A, volume 782, pages 291-296 (issn: 0375-9474,

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Authors: François Arleo;

doi: 10.1016/j.nuclphysa.2006.10.061

Probing medium-modified fragmentation processes with prompt photons

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Abstract

The quenching of single prompt photon large transverse momentum spectra in central Au–Au collisions is computed in perturbative QCD at RHIC energy, S NN = 200 GeV , and compared with PHENIX data. Double inclusive γ – π 0 production is then addressed. The γ – π 0 momentum imbalance spectrum in Au–Au collisions is seen to be sensitive to parton energy loss processes, which would help to understand how the fragmentation dynamics is modified in nuclear collisions at RHIC.

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European Organization for Nuclear Research
Switzerland

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