论文标题
重型离子碰撞中喷气横截面的QCD分解和普遍性
QCD factorization and universality of jet cross sections in heavy-ion collisions
论文作者
论文摘要
我们回顾了一个最近提出的现象学框架，以建立重型离子环境中喷气横截面的QCD分解和普遍性的概念。给出了全局分析包含喷气机的核修饰因子的结果，我们使用蒙特卡洛采样方法提取培养基修饰的喷气函数。我们观察到，Gluon喷气机比夸克喷气机被抑制得多。此外，我们研究了重型离子碰撞中包容性喷射横截面的喷射半径依赖性，并对CMS最近的测量进行了评论。通过考虑例如JET子结构可观察到的，可以测试提取的中型喷射函数的普遍性。因此，我们期望提出的结果最终将允许对模型偏差降低的培养基提取。
We review a recently proposed phenomenological framework to establish the notions of QCD factorization and universality of jet cross sections in the heavy-ion environment. First results of a global analysis of the nuclear modification factor of inclusive jets are presented where we extract medium modified jet functions using a Monte Carlo sampling approach. We observe that gluon jets are significantly more suppressed than quark jets. In addition, we study the jet radius dependence of the inclusive jet cross section in heavy-ion collisions and comment on a recent measurement from CMS. By considering for example jet substructure observables it will be possible to test the universality of the extracted medium jet functions. We thus expect that the presented results will eventually allow for extractions of medium properties with a reduced model bias.
