"Figure 2a(pp)" of "Jet-Hadron Correlations in sqrt{s_{NN}} = 200 GeV Au+Au and p+p Collisions"

BNL-RHIC. Azimuthal angular correlations of charged hadrons with respect to the axis of a reconstructed (trigger) jet in Au+Au and p+p collisions at sNN−−−sqrt=200GeV in STAR are presented. The trigger jet population in Au+Au collisions is biased towards jets that have not interacted with the medium, allowing easier matching of jet energies between Au+Au and p+p collisions while enhancing medium effects on the recoil jet. The associated hadron yield of the recoil jet is significantly suppressed at high transverse momentum (passocT) and enhanced at low passocT in 0-20% central Au+Au collisions compared to p+p collisions, which is indicative of medium-induced parton energy loss in ultrarelativistic heavy-ion collisions.本数据集源自BNL-RHIC，呈现了STAR探测器在质心系能量√s_NN=200GeV的金金（Au+Au）与质子质子（p+p）碰撞中，带电强子相对于重建触发喷注轴的方位角关联测量结果。金金碰撞中的触发喷注样本经筛选，优先选取未与介质发生相互作用的喷注，这既简化了金金与质子质子碰撞间的喷注能量匹配过程，同时又强化了介质对反冲喷注的影响效应。与质子质子碰撞相比，在中心度0-20%的中心金金碰撞中，反冲喷注的关联强子产额在高关联横向动量（p_T^{asso}）区域被显著抑制，而在低关联横向动量区域则被增强，这一现象指示了超相对论重离子碰撞中介质诱导的部分子能量损失效应。