"Table 16" 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。本研究针对质心系能量√s_NN=200 GeV的金-金（Au+Au）碰撞，开展了快度中段（|y|<1.0）区域内多奇异强子与φ介子（φ meson）的椭圆流（elliptic flow）高精度测量，测量结果以碰撞中心度和横向动量为函数变量。我们观测到，φ介子与Ω重子的v2的横向动量依赖行为，分别与π介子和质子的v2行为相似，这一结果暗示较重的奇异夸克的集体流强度，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。在0-30%与30-80%的碰撞中心度区间内，组分夸克数标度（constituent quark scaling）在统计不确定性范围内均成立。在0-30%的中心度区间内，低横向动量区域中φ介子与质子v2之间此前观测到的质量序存在被破坏的迹象，这可能暗示晚期强子相互作用对质子v2产生了影响。