Source breakup dynamics in Au+Au Collisions at s(NN)**(1/2) = 200-GeV via three-dimensional two-pion source imaging
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Abstract: (arXiv)
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.- 25.75.Ld
- nucleus nucleus: colliding beams
- scattering: heavy ion
- gold
- correlation: two-pion
- transverse momentum: low
- correlation function
- correlation: moment
- pi: formation
- PHENIX
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