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We present high precision measurements of elliptic flow near midrapidity ($|y|<1.0$) for multi-strange hadrons and $phi$ meson as a function of centrality and transverse momentum in Au+Au collisions at center of mass energy $sqrt{s_{NN}}=$ 200 GeV. We observe that the transverse momentum dependence of $phi$ and $Omega$ $v_{2}$ is similar to that of $pi$ and $p$, respectively, which may indicate that the heavier strange quark flows as strongly as the lighter up and down quarks. This observation constitutes a clear piece of evidence for the development of partonic collectivity in heavy-ion collisions at the top RHIC energy. Number of constituent quark scaling is found to hold within statistical uncertainty for both 0-30$%$ and 30-80$%$ collision centrality. There is an indication of the breakdown of previously observed mass ordering between $phi$ and proton $v_{2}$ at low transverse momentum in the 0-30$%$ centrality range, possibly indicating late hadronic interactions affecting the proton $v_{2}$.
We present recent results of the mid-rapidity elliptic flow ($v_2$) for multi-strange hadrons and the $phi$ meson as a function of centrality in Au + Au collisions at the center of mass energy $sqrt{s_{NN}}$ = 200 GeV. The transverse momentum depende
We report a new measurement of $D^0$-meson production at mid-rapidity ($|y|$,$<$,1) in Au+Au collisions at ${sqrt{s_{rm NN}} = rm{200,GeV}}$ utilizing the Heavy Flavor Tracker, a high resolution silicon detector at the STAR experiment. Invariant yi
We present first measurements of the $phi$-meson elliptic flow ($v_{2}(p_{T})$) and high statistics $p_{T}$ distributions for different centralities from $sqrt{s_{NN}}$ = 200 GeV Au+Au collisions at RHIC. In minimum bias collisions the $v_{2}$ of the
The PHENIX experiment at RHIC has measured the centrality dependence of the direct photon yield from Au$+$Au collisions at $sqrt{s_{_{NN}}}=200$ GeV down to $p_T=0.4$ GeV/$c$. Photons are detected via photon
The PHENIX experiment has measured $phi$ meson production in $d$$+$Au collisions at $sqrt{s_{_{NN}}}=200$ GeV using the dimuon and dielectron decay channels. The $phi$ meson is measured in the forward (backward) $d$-going (Au-going) direction, $1.2<y