论文标题
$ \ sqrt {s_ \ mathrm {nn}} $ = 5.02 TEV
Azimuthal anisotropy of dijet events in PbPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV
论文作者
论文摘要
$ \ sqrt {s_ \ mathrm {nn}} $ = 5.02 tev在铅核核中心的核中心质量中心的密集part型介质中，径顿的依赖性part型能量损失是通过确定Azimuthal anisotropies for the Azimuthal anisotropies for高等倒数势头的。数据是通过CMS实验在2018年收集的，对应于1.69 Nb $^{ - 1} $的集成光度。对于包含背对背喷气机的事件，构建了相对方位角和伪塔（$η$）的相关性，在喷气机和哈子之间以及在两个辐射之间建立了相关性。各向异性表示为傅立叶扩展系数$ v_n $，$ n = $ 2-4这些方位角分布。 dijet $ v_n $值是从远程（1.5 $ \ lt $ $ \vertδη\ vert $ $ \ lt $ 2.5）组件中提取的，这些相关组件抑制了喷气片段过程中的背景贡献。观察到正dijet $ v_2 $值的值从中央事件增加到更多的外围事件，而$ v_3 $和$ v_4 $值的值与实验不确定性中的零一致。
The path-length dependent parton energy loss within the dense partonic medium created in lead-lead collisions at a nucleon-nucleon center-of-mass energy of $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV is studied by determining the azimuthal anisotropies for dijets with high transverse momentum. The data were collected by the CMS experiment in 2018 and correspond to an integrated luminosity of 1.69 nb$^{-1}$. For events containing back-to-back jets, correlations in relative azimuthal angle and pseudorapidity ($η$) between jets and hadrons, and between two hadrons, are constructed. The anisotropies are expressed as the Fourier expansion coefficients $v_n$, $n = $ 2-4 of these azimuthal distributions. The dijet $v_n$ values are extracted from long-range (1.5 $\lt$ $\vertΔη\vert$ $\lt$ 2.5) components of these correlations, which suppresses the background contributions from jet fragmentation processes. Positive dijet $v_2$ values are observed which increase from central to more peripheral events, while the $v_3$ and $v_4$ values are consistent with zero within experimental uncertainties.
