PHENIX Measurements of Higher-order Flow Harmonics for Identified Charged Hadrons in Au + Au collisions at √(sNN)=39–200mboxGeV

The azimuthal anisotropy coefficients v2,3,4, characterizing collective flow in Au + Au collisions, are presented for identified particle species as a function of transverse momentum (pT), centrality (cent) and beam collision energy (√(sNN)=0.039–0.20 TeV). The vn values for each particle species, show little, if any, change over the measured beam energy range, and vn/(nq)n/2 vs. KET/nq scales to a single curve (constituent quark number (nq) scaling) for each n, over a broad range of transverse kinetic energies (KET). A comparison of v2(pT) for individual particle species obtained in Au + Au collisions at √(sNN)=0.20 TeV (RHIC) and Pb + Pb collisions at √(sNN)=2.76 TeV (LHC), indicate stronger collective flow at the LHC. These flow measurements and their scaling patterns, can provide important additional constraints for extraction of the specific viscosity η/s