Source Breakup Dynamics in Au+Au Collisions at sNN=200 GeV via Three-Dimensional Two-Pion Source Imaging

Le résumé fourni par la source

A three-dimensional correlation function obtained from midrapidity, low ${p}_{T}$, pion pairs in central $\mathrm{Au}+\mathrm{Au}$ collisions at $\sqrt{{s}_{NN}}=200\text{ }\text{ }\mathrm{GeV}$ 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). A proper breakup time ${\ensuremath{\tau}}_{0}\ensuremath{\sim}9\text{ }\text{ }\mathrm{fm}/c$ and a mean proper emission duration $\ensuremath{\Delta}\ensuremath{\tau}\ensuremath{\sim}2\text{ }\text{ }\mathrm{fm}/c$, leading to sizable emission time differences ($⟨|\ensuremath{\Delta}{t}_{\mathrm{LCM}}|⟩\ensuremath{\approx}12\text{ }\text{ }\mathrm{fm}/c$), are required to allow models to be successfully matched to these tails. The model comparisons also suggest an outside-in ``burning'' of the emission source reminiscent of many hydrodynamical models.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.