"Extra Figure g4cp[Z88] (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].

本数据集展示了用于描述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。本研究采用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，对应的积分亮度为35.9 fb⁻¹。我们测量了广义角距（generalized angularities）可观测量，用以表征喷注子结构并区分夸克与胶子引发的喷注。该类可观测量对喷注内部的横向动量分布与角间距敏感。分析过程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。上述可观测量以喷注横向动量分箱为观测维度，并作为喷注半径参数的函数进行测量。每一项测量均通过执行“软剔除（soft drop）”修饰流程完成，该流程可移除喷注中的软辐射与大角度辐射。为便于检索，所有图表均采用编码命名，各字母/数字的含义按顺序依次为：未修饰/已修饰、AK4/AK8、带电粒子、多重数/pTD2/推力/宽度/LHA、[中心区双喷注/向前区双喷注/Z+喷注、横向动量PT]。