论文标题
LHC处的PB+PB碰撞中的$ z^0/γ$相关的强子制作和喷气子结构
Hadron productions and jet substructures associated with $Z^0/γ$ in Pb+Pb collisions at the LHC
论文作者
论文摘要
我们对$ z^0 $/$γ$+强体相关性以及与$ z^0/γ$在Pb+pb碰撞的$ z^0/γ$相关的$ z^0 $/$γ$+强化子结构上进行了详细研究。我们利用线性玻尔兹曼运输（LBT）模型来模拟喷气中等相互作用和中等响应，并使用扩展的簇强力模型来研究重物碰撞中夸克和gluons的非扰动过渡到最终的哈德子。包括强调效应，我们可以很好地描述$ Z^0/γ$+HADRON的相关性和$ Z^0/γ$压缩的JET子结构在P+P和PB+PB碰撞中均同时同时进行。射流轮廓和喷射碎片函数上的介质修饰表明，携带大部分射流动量的颗粒通常与射流轴紧密对齐，而观察到低摩肌颗粒相对于PB+PB碰撞的射流轴相对于喷射轴具有更宽的角度分布。特别是，我们发现$ z^0/γ$标记的强子相关性对来自密集的培养基和中等响应的软颗粒敏感，而喷气基结构对那些仅落入喷气式区域的柔软的黑核表现出微弱的依赖性。
We carry out a detailed study of medium modifications on $Z^0$/$γ$+hadron correlations as well as jet substructures in association with $Z^0/γ$ in Pb+Pb collisions with $\sqrt{s_{NN}}=5.02$ TeV at the LHC. We utilize the Linear Boltzmann transport (LBT) model to simulate the jet-medium interactions and medium response, and an extended cluster hadronization model to investigate the non-perturbative transition of quarks and gluons into final hadrons in heavy-ion collisions. Including hadronization effect, we can well describe $Z^0/γ$+hadrons correlations and $Z^0/γ$-tagged jet substructures in both p+p and Pb+Pb collisions simultaneously. Medium modification on jet profile and jet fragmentation functions indicate that particles carrying a large fraction of the jet momentum are generally closely aligned with the jet axis, whereas low-momentum particles are observed to have a much broader angular distribution relative to jet axis in Pb+Pb collisions due to jet-medium interactions. In particular, we find that $Z^0/γ$-tagged hadron correlations are sensitive to the soft particles from the dense medium and medium response, while jet-substructures show weak dependence on those soft hadrons with only a fraction of them falling inside the jet area
