标题： 基于STAR的Au+Au碰撞中，$\sqrt{s_{NN}}=200$GeV下与事件平面相关的背向喷注类似相关形状 显示英文标题

标题： Event-plane dependent away-side jet-like correlation shape in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV from STAR

摘要： 我们采用一种数据驱动的方法，通过计算近区和远区两粒子关联之间的差异，减去所有谐波的流背景，该差异取决于伪快度（$\eta$）距离，即从选择具有增强反冲横向动量（$P_x$）的高-$p_T$个触发粒子的区域的距离。 我们分析关联形状作为触发粒子相对于从束-束计数器（BBCs）重建的事件平面（EP）的方位角角度的函数，这些BBCs在$\eta$方向上偏离中间快度区域几个单位。 大的$\eta$间隙可以有效消除触发粒子与EP之间的自相关。 我们通过展开过程校正来自BBC EP确定的相对较大的分辨率效应。 展开后的远离侧喷注样关联的宽度随着路径长度的增加而增加，这表明了喷注-介质相互作用。 显示英文摘要

摘要： We employ a data-driven method to subtract the flow background of all harmonics by calculating the difference of the two-particle correlations between the close-region and far-region, determined depending on the pseudo-rapidity ($\eta$) distance from the region where an enhanced recoil transverse momentum ($P_x$) from a high-$p_T$ trigger particle is selected. We analyze the correlation shape as a function of the trigger particle azimuthal angle relative to the event-plane (EP) reconstructed from the beam-beam counters (BBCs) which are displaced by several units in $\eta$ from the mid-rapidity region. The large $\eta$ gap can effectively eliminate the auto-correlation between trigger particles and EP. We correct for the relatively large resolution effect from the BBC EP determination via an unfolding procedure. The width of unfolded away-side jet-like correlation increases with longer path-length, which is an indication of jet-medium interactions.