PHENIX Measurements of Higher-order Flow Harmonics for Identified Charged Hadrons in Au+Au collisions at $\sqrt{s_{NN}}=39-200$ GeV

Abstract

The azimuthal anisotropy coefficients $v_{2,3,4}$, characterizing collective flow in Au+Au collisions, are presented for identified particle species as a function of transverse momentum ($p_T$), centrality ($\mathrm{cent}$) and beam collision energy ($\sqrt{s_{NN}}=0.039-0.20$ TeV). The $v_n$ values for each particle species, show little, if any, change over the measured beam energy range, and $v_n/(n_q{)}^{n/2}$ vs. $K{E}_T/n_q$ scales to a single curve (constituent quark number ($n_q)$ scaling) for each $n$, over a broad range of transverse kinetic energies ($K{E}_T$). A comparison of $v_2(p_T)$ for individual particle species obtained in Au+Au collisions at $\sqrt{s_{NN}}=0.20$ TeV (RHIC) and Pb+Pb collisions at $\sqrt{s_{NN}}=2.76$ 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 $\eta /s$.

4 pages, 5 figures, proceedings of talk at the 23rd International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions, QM2012, August 13-18, 2012, Washington DC

References in corpus (4)

• Measurements of Higher-Order Flow Harmonics in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Hadron spectra and elliptic flow for 200 A GeV Au+Au collisions from viscous hydrodynamics coupled to a Boltzmann cascade
• Collision Energy Dependence of Viscous Hydrodynamic Flow in Relativistic Heavy-Ion Collisions
• Anisotropic flow at the LHC measured with the ALICE detector

Cited by in corpus (4)

• Further developments of a multi-phase transport model for relativistic nuclear collisions
• Evolution of transverse flow and effective temperatures in the parton phase from a multi-phase transport model
• Predictions for $\sqrt{s_{NN}}=5.02$ TeV Pb+Pb Collisions from a Multi-Phase Transport Model
• Recent results on Bose-Einstein correlations by the PHENIX Experiment