Three-Dimensional two-pion source image from Pb+Pb Collisions at Sqrts_NN=17.3 GeV: New constraints for source breakup dynamics

C. Alt

doi:10.1016/j.physletb.2010.01.029

Three-Dimensional two-pion source image from Pb+Pb Collisions at Sqrts_NN=17.3 GeV: New constraints for source breakup dynamics

Nuclear Experiment 2015-05-13 v2

Authors: C. Alt

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Abstract

Source imaging methodology is used to provide a three-dimensional two-pion source function for mid-rapidity pion pairs with $p_T<70$ MeV/c in central ( $0-7%$ ) Pb+Pb collisions at $\sqrt s_{NN}$ =17.3 GeV. Prominent non-Gaussian tails are observed in the pion pair transverse momentum (outward) and in the beam (longitudinal) directions. Model calculations reproduce them with the assumption of Bjorken longitudinal boost invariance and transverse flow blast-wave dynamics coupled with "outside-in burning" in the transverse direction; they also yield a proper time for breakup and emission duration for the pion source.

Cite

@article{arxiv.0809.1445,
  title  = {Three-Dimensional two-pion source image from Pb+Pb Collisions at Sqrts_NN=17.3 GeV: New constraints for source breakup dynamics},
  author = {C. Alt},
  journal= {arXiv preprint arXiv:0809.1445},
  year   = {2015}
}

Comments

Six pages 4 figs. Submitted for publication

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