"Extra Figure g4L[Z186] (corr)" of "Study of quark and gluon jet substructure in Z+jet and dijet events from pp collisions"

Measurements of jet substructure describing the composition of quark- and gluon-initiated jets are presented. Proton-proton (pp) collision data at sqrt(s)=13 TeV collected with the CMS detector are used, corresponding to an integrated luminosity of 35.9/fb. Generalized angularities are measured that characterize the jet substructure and distinguish quark- and gluon-initiated jets. These observables are sensitive to the distributions of transverse momenta and angular distances within a jet. The analysis is performed using a data sample of dijet events enriched in gluon-initiated jets, and, for the first time, a Z+jet event sample enriched in quark-initiated jets. The observables are measured in bins of jet transverse momentum, and as a function of the jet radius parameter. Each measurement is repeated applying a "soft drop" grooming procedure that removes soft and large angle radiation from the jet.For easier navigation, figures are named with a code with each letter/number representing in the following order: ungroomed/groomed, AK4/AK8, charged, multiplicity/pTD2/thrust/width/LHA, [central dijet/forward dijet/Z+jet, PT].

本研究报道了表征夸克引发喷注与胶子引发喷注组分的喷注子结构测量结果。本研究使用了CMS探测器（CMS detector）采集的质心系能量√s=13 TeV的质子-质子（pp）碰撞数据，对应的积分亮度为35.9 fb⁻¹。研究测量了广义角向参量（generalized angularities），该参量可用于表征喷注子结构并区分夸克引发与胶子引发喷注。该类可观测物理量对喷注内部的横向动量分布与角距离分布具有敏感性。

分析采用了胶子引发喷注占优的双喷注（dijet）事件样本，同时首次使用了夸克引发喷注占优的Z+喷注（Z+jet）事件样本。该类可观测物理量以喷注横向动量分箱的形式进行测量，并以喷注半径参数为自变量展开研究。所有测量均包含未修整与经“软滴落”（soft drop）修整两种情形，该程序可去除喷注内的软辐射与大角度辐射。

为便于查阅，所有图表均采用编码命名，每个字母/数字依次代表：未修整/已修整、AK4/AK8、带电粒子、多重数/pTD₂/喷注重展/喷注宽度/LHA、[中心区双喷注/向前区双喷注/Z+喷注，横向动量]。