Abstract
Elliptic (v 2) and triangular (v 3) anisotropic flow coefficients for inclusive and identified charged hadrons ( π ±, K ±, p, ) at midrapidity in Au+Au collisions, measured by the STAR experiment in the Beam Energy Scan (BES) at the Relativistic Heavy Ion Collider at , are presented. We observe that the triangular flow signal (v 3) of identified hadrons exhibits similar trends as first observed for v 2 in Au+Au collisions, i.e. (i) mass ordering at low transverse momenta, pT < 2 GeV/c, (ii) meson/baryon splitting at intermediate pT , 2 < pT < 4 GeV/c, and (iii) difference in flow signal of protons and antiprotons. New measurements of v3 excitation function could serve as constraints to test different models and to add new information about the temperature dependence of the transport properties of the strongly interacting matter.
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