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\(\phi\) meson \(v_{1}\), \(v_{2}\) in Au+Au collisions at \(\sqrt{s_{NN}} = \) 3 GeV, 7.2 GeV from STAR

ORAL

Abstract

The \(\phi\) meson is composed of strange quarks (\(s\overline s\)), and has a small cross section with hadrons which reduces the influence of rescattering in the later stage of heavy-ion collisions. Thus the \(\phi\) meson directed flow (\(v_{1}\)) and elliptic flow (\(v_{2}\)) are sensitive to the early stages of the collisions and are important observables for the study of quark-gluon plasma (QGP) phase diagram at RHIC. In this talk, we will present measurements of the \(\phi\) meson \(v_{1}\), \(v_{2}\) in Au+Au collisions from the STAR fixed-target program (FXT). The \(\phi\) meson is reconstructed through the channel \(\phi\rightarrow K^{+}+ K^{-}\). We will compare our new results with STAR Beam Energy Scan I (BES-I) results.

Authors

  • Ding Chen

    University of California, Riverside