| Thème(s) : |
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Physique/Physique des Hautes Energies - Phénoménologie
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| Titre : |
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A Systematic Study on Direct Photon Production from Central Heavy Ion Collisions |
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| Auteur : |
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Fu-Ming Liu, K. Werner1 |
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| Laboratoire : |
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| Résumé : |
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We investigate the production of direct photons in central Au-Au collisions at the relativistic Heavy-Ion Collider (RHIC) at 200 GeV per nucleon, considering all possible sources. We treat thermal photons emitted from a quark-gluon plasma and from a hadron gas, based on a realistic thermodynamic expansion. Hard photons from elementary nucleon-nucleon scatterings are included: primordial elementary scatterings are certainly dominant at large transverse momenta, but also secondary photons from jet fragmentation and jet-photon conversion cannot be ignored. In both cases we study the effect of energy loss, and we also consider photons emitted from bremsstrahlung gluons via fragmentation. |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication
ou d'écriture : |
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2009 |
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| Nom du périodique : |
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| Volume : |
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36 |
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| Page/Article : |
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035101 |
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| Commentaire : |
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13 pages 19 figures |
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