Evidence for a long range structure in the pion emission source in Au+Au collisions at RHIC

Details Evidence for a long range structure in the pion emission source in Au+Au collisions at RHIC Evidence for a long range structure in the pion emission source in Au+Au collisions at RHIC

2005-10-11

arxiv.org/abs/nucl-ex/0510037v1

Nucl.Phys. A774 (2006) 607-610

Physics

Nuclear Physics

Nuclear Experiment

Proceedings for parallel talk at Quark Matter 2005

Scientific paper

10.1063/1.2197461

The PHENIX experiment, has recently acquired $\sim$ 1 billion minimum bias Au+Au events at $\sqrt s = 200$GeV during the year-2004 run. This high statistics data set, coupled with a state-of-the-art analysis technique, allows for the extraction of 3D emission sources for various particle types. These 3D sources lend fresh insight into the nature of a long-range source previously reported by PHENIX. The new results indicate an anisotropic pion emission source in the pair c.m. having an extended space-time extent oriented in the outward direction. The two-proton emission source from the same data set is essentially isotropic the pair c.m. frame. These results provide a "window" for viewing the evolution dynamics of the high energy density nuclear matter created at RHIC.

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