"Extra Figure u4w[Z150]" 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].

本工作报道了表征夸克引发喷注与胶子引发喷注组成的喷注子结构测量结果。实验采用CMS探测器采集的质心系能量√s=13 TeV的质子-质子（pp）碰撞数据，对应积分亮度为35.9 fb⁻¹。
我们测量了广义角性（generalized angularities），该可观测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。此类可观测量对喷注内部的横向动量分布与角间距分布具有敏感性。
本分析使用了富含胶子引发喷注的双喷注事件样本，并首次采用了富含夸克引发喷注的Z+喷注事件样本。可观测量按喷注横向动量的分箱形式进行测量，并以喷注半径参数为变量进行表征。每一项测量均通过施加软滴落（soft drop）喷注清洗程序完成，该程序可移除喷注内的软辐射与大角度辐射。
为便于查阅，图表采用编码命名规则，各字母/数字依次代表以下类别：未清洗/清洗态、AK4/AK8喷注算法、带电粒子可观测量、多重数/pTD2/推力/展宽/LHA、[中心区双喷注/向前区双喷注/Z+喷注、横向动量PT]。