"Table 2" 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 $v_{2}$.布鲁克海文国家实验室相对论重离子对撞机（BNL-RHIC）：本工作报道了质心系能量√s_NN=200 GeV的金-金（Au+Au）碰撞中，多奇异强子与φ介子（φ meson）在快度中心区（|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）为依赖变量。我们观测到，φ介子与Ω重子的v₂横向动量依赖行为分别相似于π介子与质子的v₂依赖模式，这一现象暗示较重的奇异夸克与较轻的上、下夸克具备同等强度的集体流行为。该观测结果为RHIC最高能区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%两类碰撞中心度区间内，组分夸克数标度（constituent quark scaling）在统计不确定度（statistical uncertainty）范围内成立。在0-30%中心度区间的低横向动量区，我们观测到φ介子与质子v₂间此前报道的质量序存在破缺迹象，这可能暗示晚期强子相互作用对质子v₂产生了影响。