Azimuthal anisotropy of ? meson in U+U and Au+Au collisions at RHIC

摘要

Abstract. The measurements of the azimuthal anisotropy of meson in the U+U and Au+Au collisions at the Relativistic Heavy-Ion Collider (RHIC) are reported. The centrality dependence of the Fourier coefficients v2, v3, v4and v5 is presented for meson at midrapidity (|| 1.0), in U+U and Au+Au collisions at sNN = 193 and 200 GeV, respectively. The -sub event plane method is used with a gap of 0.1 to suppress the non-flow effects. A strong centrality dependence is observed for the meson ellipti.