PHENIX results on flow observables in asymmetric Cu plus Au collisions

Measurements of anisotropic flow from Cu+Au root s(NN) = 200 GeV collisions in PHENIX at RHIC in 2012 are presented for inclusive charged particles and identified hadrons pi(+/-), K-+/-, p, and (p) over bar at midrapidity. Fourier coefficients characterizing the azimuthal distribution of produced particles with respect to the event plane measured at forward rapidity are examined over a broad range of p(T) and collision centrality. Directed, elliptic, and triangular moments (v(1), v(2), v(3) as functions of p(T)) all exhibit mass ordering. Comparisons are made to Cu+Cu and Au+Au systems as well as to hydrodynamical and transport model calculations [1]. Unlike v(2) and v(3), v(1) decreases with centrality, mass ordering is seen for all three, and v(2) and v(3) with respect to transverse momentum feature common scaling with 1/(epsilon N-n(part)1/3).