论文标题
核对LHC的JET子结构可观察的影响
Nuclear effects on jet substructure observables at the LHC
论文作者
论文摘要
在密集的QCD介质中，使用PQCD图片进行喷射进化，其中中等诱导的Parton分支是从真空样排放中分解的，我们研究了两个JET子结构可观察到的可观察到：$ Z_G $和软滴度分布。我们使用Parton阵雨的蒙特卡洛实施来计算各自的核修饰因子。我们的结果与PB+PB碰撞的LHC数据定性一致。我们确定了解释我们结果的物理机制：不一致的喷射能量损失，半硬中诱导的排放以及陡峭的射流频谱引入的偏见。
Using a pQCD picture for jet evolution in a dense QCD medium, in which medium-induced parton branchings are factorized from vacuum-like emissions, we study two jet substructure observables: the $z_g$ and the Soft Drop multiplicity distributions. We compute the respective nuclear modification factors using a Monte-Carlo implementation of the parton showers. Our results are in qualitative agreement with LHC data for Pb+Pb collisions. We identify the physical mechanisms explaining our results: incoherent jet energy loss, semi-hard medium-induced emissions and the bias introduced by the steeply falling jet spectrum.
