"Table 7" of "Centrality and transverse momentum dependence of elliptic flow of multi-strange hadrons and $\phi$ meson in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV"

BNL-RHIC. 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 $v_{2}$.BNL-RHIC（布鲁克海文国家实验室-相对论重离子对撞机）。本研究报道了质心系能量√s_NN=200 GeV的金-金碰撞中，多奇异强子与φ介子（φ meson）在中心快度区（|y|<1.0）的椭圆流（elliptic flow）高精度测量结果，测量结果以碰撞中心度（centrality）与横向动量（transverse momentum）为变量。我们观测到，φ介子与Ω重子的v₂随横向动量的演化趋势分别与π介子和质子一致，这一现象暗示较重的奇异夸克的流强与较轻的上、下夸克相当。该观测结果为RHIC最高能量下重离子碰撞中部分子集体性的形成提供了明确的实验证据。研究发现，在0-30%与30-80%两种碰撞中心度区间内，组分夸克数标度性（constituent quark scaling）在统计不确定性（statistical uncertainty）范围内成立。在0-30%中心度区间的低横向动量区域，我们观测到先前报道的φ介子与质子v₂间的质量序存在破缺迹象，这可能提示晚期强子相互作用（hadronic interactions）对质子v₂产生了影响。