Centrality and transverse-momentum dependence of higher-order flow harmonics of identified hadrons in Au+Au collisions at sNN=200 GeV

Le résumé fourni par la source

We present high-precision measurements of elliptic, triangular, and quadrangular flow ${v}_{2}$, ${v}_{3}$, and ${v}_{4}$, respectively, at midrapidity for identified hadrons $\ensuremath{\pi}$, $p$, $K$, $\ensuremath{\varphi}$, ${K}_{s}$, $\mathrm{\ensuremath{\Lambda}}$ as a function of centrality and transverse momentum in Au+Au collisions at the center-of-mass energy $\sqrt{{s}_{NN}}=200$ GeV. We observe similar ${v}_{n}$ trends between light and strange mesons which indicates that the heavier strange quarks flow as strongly as the lighter up and down quarks. The number-of-constituent-quark scaling for ${v}_{2}$, ${v}_{3}$, and ${v}_{4}$ is found to hold within statistical uncertainty for $0\text{--}10%$, $10\text{--}40%$, and $40\text{--}80%$ collision centrality intervals. The results are compared to several viscous hydrodynamic calculations with varying initial conditions, and could serve as an additional constraint to the development of hydrodynamic models.

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