"Figure 3.3" of "General balance functions of identified charged hadron pairs of $(\pi,{\rm K},{\rm p})$ in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV"

Balance function $B^{{\rm p}\pi}$ projected onto the $\Delta \varphi$ axis in Pb--Pb collisions at $\sqrt{s_{\rm NN}}=2.76\;\text{TeV}$ for selected centrality ranges ($\pi,{\rm K}: 0.2 \leq p_{\rm T} \leq 2.0\;{\rm GeV}/c$; ${\rm p}: 0.5 \leq p_{\rm T} \leq 2.5\;{\rm GeV}/c$).

在核子-核子质心系能量√s_NN=2.76 TeV的铅-铅（Pb--Pb）碰撞中，针对选定的中心度区间，平衡函数$B^{ppi}$被投影至Δφ轴；其中π介子、K介子的横向动量范围为0.2 ≤ p_T ≤ 2.0 GeV/c，质子p的横向动量范围为0.5 ≤ p_T ≤ 2.5 GeV/c。