Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2007-12-28
Phys.Rev.Lett.100:232301,2008
Physics
Nuclear Physics
Nuclear Experiment
345 authors, 6 pages text, RevTeX-4, 3 figures. Submitted to Physical Review Letters. Plain text data tables for the points pl
Scientific paper
10.1103/PhysRevLett.100.232301
A three-dimensional (3D) correlation function obtained from mid-rapidity, low pT pion pairs in central Au+Au collisions at sqrt(s_NN)=200 GeV is studied. The extracted model-independent source function indicates a long range tail in the directions of the pion pair transverse momentum (out) and the beam (long). Model comparisons to these distensions indicate a proper breakup time \tau_0 ~ 9 fm/c and a mean proper emission duration \Delta\tau ~ 2 fm/c, leading to sizable emission time differences (<|\Delta \tau_LCM |> ~ 12 fm/c), partly due to resonance decays. They also suggest an outside-in "burning" of the emission source reminiscent of many hydrodynamical models.
Afanasiev S.
PHENIX Collaboration
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