Direct photons in PHENIX at the RHIC

被引:2
|
作者
Kistenev, E. [1 ]
机构
[1] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
关键词
D O I
10.1088/0954-3899/38/12/124137
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
PHENIX results on direct photon production in p+p, d+Au, Cu+Cu and Au+Au collisions are presented. Direct photon yield at high p(T) is consistent with NLO pQCD calculations in all systems. In heavy ion collisions at low p(T) direct photons exhibit an order of magnitude exponential shape enhancement consistent with thermal emission from quark gluon plasma (QGP). The thermal nature of this enhancement is further confirmed by the large elliptic flow of direct photons below p(T) similar to 5GeV/c.
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页数:4
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