Electromagnetic radiation from nuclear collisions at ultrarelativistic energies
- Department of Physics, McGill University, 3600 University Street, Montreal, Quebec, H3A 2T8 (Canada)
- Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States)
The hot and dense strongly interacting matter created in collisions of heavy nuclei at RHIC energies is modeled with relativistic hydrodynamics, and the spectra of real and virtual photons produced at midrapidity in these events are calculated. Several different sources are considered, and their relative importance is compared. Specifically, we include jet fragmentation, jet-plasma interactions, the emission of radiation from the thermal medium and from primordial hard collisions. Our calculations consistently take into account jet energy loss, as evaluated in the AMY formalism. We obtain results for the spectra, the nuclear modification factor (R{sub AA}{sup {gamma}}), and the azimuthal anisotropy (v{sub 2}{sup {gamma}}) that agree with the photon measurements performed by the PHENIX Collaboration at RHIC.
- OSTI ID:
- 21068145
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 77, Issue 2; Other Information: DOI: 10.1103/PhysRevC.77.024909; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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