"Extra Figure u4t[Z50]" 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].

本研究报道了针对夸克诱发喷注与胶子诱发喷注组成的喷注子结构的测量结果。本次分析使用CMS探测器（CMS）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。研究测量了用于表征喷注子结构并区分夸克与胶子诱发喷注的广义角性（generalized angularities）可观测量。上述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。本次分析分别采用胶子诱发喷注占优的双喷注事件样本，以及首次使用的夸克诱发喷注占优的Z+喷注事件样本完成。该可观测量以喷注横向动量为分箱维度，并随喷注半径参数的变化进行测量。每一项测量均重复执行"软滴"（soft drop）喷注修整程序，该程序可移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，各字母/数字依次代表以下含义：未修整/已修整、AK4/AK8喷注、带电粒子、多重数/pTD2/喷注重心/宽度/LHA、[中心区双喷注/前向区双喷注/Z+喷注、横向动量]。