标题： 解析重离子碰撞中由强子触发的半包容反冲喷注产额的修正 显示英文标题

标题： Deciphering yield modification of hadron-triggered semi-inclusive recoil jets in heavy-ion collisions

摘要： 在相对论重离子碰撞中，一种被称为夸克胶子等离子体（QGP）的热密物质态被产生。 从具有高横向动量（$p_{\mathrm{T}}$）的触发强子反弹的半包容喷注可以作为探测QGP性质的有效探针，因为当它们穿越QGP时预计会发生喷注淬火。 最近关于重离子碰撞中反弹喷注产额与触发计数归一化后的比值，与$p$+$p$ 碰撞中（$I_{\mathrm{AA}}$）相应比值的实验结果提出了对其解释的一个意外挑战。 观察到，随喷流$I_{\mathrm{AA}}$增大，$p_{\mathrm{T}}$可能在高$p_{\mathrm{T}}$时超过1，而传统上认为喷流淬火会导致$I_{\mathrm{AA}} < 1$。 为了解决这个难题，我们利用线性玻尔兹曼输运（LBT）模型来模拟QGP中的喷流输运，并分别研究高$p_{\mathrm{T}}$触发和反冲喷流的淬火效应$I_{\mathrm{AA}}$。 我们发现，单独触发彩色粒子的淬火是导致实验观测到的趋势上升以及大于1值的原因。 显示英文摘要

摘要： In relativistic heavy-ion collisions, a hot and dense state of matter, called the Quark-Gluon Plasma (QGP), is produced. Semi-inclusive jets recoiling from trigger hadrons of high transverse momenta ($p_{\mathrm{T}}$) can serve as an effective probe of the QGP properties, as they are expected to experience jet quenching when traversing the QGP. Recent experimental results on the ratio of recoil jet yields normalized by the trigger counts in heavy-ion collisions to that in $p$+$p$ collisions ($I_{\mathrm{AA}}$) pose an unexpected challenge in its interpretation. It is observed that $I_{\mathrm{AA}}$ rises with the jet $p_{\mathrm{T}}$ and possibly exceeds unity at high $p_{\mathrm{T}}$, while traditionally it is expected that jet quenching would lead to $I_{\mathrm{AA}} < 1$. To address this challenge, we utilize the Linear Boltzmann Transport (LBT) model to simulate jet transport in the QGP, and study the effect of jet quenching for high-$p_{\mathrm{T}}$ triggers and recoil jets separately on $I_{\mathrm{AA}}$. We find that the quenching of the colored triggers alone is responsible for the rising trend and larger-than-unity value observed experimentally.