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Jet quenching and direct photon production

Abstract : The jet quenching effect has been investigated in the direct photon production, based on a realistic data-constrained (3+1)-dimensional hydrodynamic description of the expanding hot and dense matter, a reasonable treatment of the propagation of partons and their energy loss in the fluid and a systematic study of the main sources of direct photons. Our resultant pt spectra agree with recent PHENIX data in a broad pt range. Parton energy loss in the plasma eventually significantly affects direct photon production from fragmentation and jet–photon conversion, similar to hadron suppression in central heavy-ion collisions. But this only causes about 40% decrease in the total production of direct photons, due to the mixture with other direct photon sources.
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http://hal.in2p3.fr/in2p3-00390444
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Submitted on : Tuesday, June 2, 2009 - 10:46:12 AM
Last modification on : Friday, January 3, 2020 - 4:30:07 PM

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F.-M. Liu, T. Hirano, Klaus Werner, Y. Zhu. Jet quenching and direct photon production. SQM 2008 - International Conference on Strangeness in Quark Matter, Oct 2008, Beijing, China. pp.064072, ⟨10.1088/0954-3899/36/6/064072⟩. ⟨in2p3-00390444⟩

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