"Figure 8b-2" of "Deviation from quark-number scaling of the anisotropy parameter v_2 of pions, kaons, and protons in Au+Au collisions at sqrt(s_NN) = 200 GeV"

Identified hadron $v_2$ in midcentral (20–60%, right panels) Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV. Panels (a) and (b) show $v_2$ as a function of transverse momentum $p_T$. The $v_2$ of all species for centrality 0–20% has been scaled up by a factor of 1.6 for better comparison with results of 20–60% centrality. The error bars (shaded boxes) represent the statistical (systematic) uncertainties. The systematic uncertainties shown are type A and B only.

质心系能量√sₙₙ=200 GeV的中中心（20–60%，右侧图）Au+Au碰撞中的已鉴别强子v₂。图(a)和(b)展示了v₂随横动量p_T的变化关系。为便于与20–60%中心度的结果对比，0–20%中心度下所有粒子种类的v₂均按1.6倍比例放大。误差棒（阴影框）代表统计（系统）不确定性。所示系统不确定性仅包含A类和B类。