Document Type
Article
Publication Title
Physical Review C
Abstract
Measurements of the anisotropic flow coefficients v₂{Ψ₂}, v₃{Ψ₃}, v₄{Ψ₄}, and v₄{Ψ₂} for identified particles (π±,K±, and p+p⁻) at midrapidity, obtained relative to the event planes Ψm at forward rapidities in Au + Au collisions at √sNN=200GeV, are presented as a function of collision centrality and particle transverse momenta pT. The vn coefficients show characteristic patterns consistent with hydrodynamical expansion of the matter produced in the collisions. For each harmonic n, a modified valence quark-number Nq scaling [plotting vn{Ψm}/(Nq)n/2 versus transverse kinetic energies (KET)/Nq] is observed to yield a single curve for all the measured particle species for a broad range of KET. A simultaneous blast-wave model fit to the observed vn{Ψm}(pT) coefficients and published particle spectra identifies radial flow anisotropies ρn{Ψm} and spatial eccentricities sn{Ψm} at freeze-out. These are generally smaller than the initial-state participant-plane geometric eccentricities n{ΨmPP} as also observed in the final eccentricity from quantum interferometry measurements with respect to the event plane.
DOI
10.1103/PhysRevC.93.051902
Publication Date
2016
Recommended Citation
Adare, Andrew Marshall; Gyöngyi, Baksay; László, Baksay A.; Hohlmann, Marcus; and PHENIX Collaboration, "Measurement Of The Higher-Order Anisotropic Flow Coefficients For Identified Hadrons In Au + Au Collisions At √sNN =200 GeV" (2016). Aerospace, Physics, and Space Science Faculty Publications. 459.
https://repository.fit.edu/apss_faculty/459
