Production of Direct Photons, {pi}0's, and {eta}'s in p+p and Au+Au Collisions at RHIC
Journal Article
·
· AIP Conference Proceedings
- Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States)
The PHENIX experiment at RHIC has measured neutral pion, eta, and direct photon production in {radical}(s{sub NN}) = 200 GeV p+p and Au+Au collisions. The neutral pion and direct photon yields in p+p collisions are well described by NLO pQCD predictions. In Au+Au collisions the neutral pion yield is suppressed as compared to expectations from p+p collisions, with a suppression which increases with increasing nuclear overlap. However, the direct photon yield shows no centrality dependent suppression, indicating that the pion suppression is due to a final state effect, such as parton energy loss in the excited final state.
- OSTI ID:
- 20726562
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 792; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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