"Extra Figure u8w[c65]" 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诱发喷注与胶子诱发喷注组成的喷注子结构测量结果。实验采用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，对应积分亮度达35.9 fb⁻¹。我们测量了广义角距（Generalized angularities）可观测量，该量可用于表征喷注子结构并区分夸克与胶子诱发喷注。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。本分析使用了胶子诱发喷注占优的双喷注事件样本，并首次采用了夸克诱发喷注占优的Z+喷注（Z+jet）事件样本。上述可观测量按照喷注横向动量的分箱进行测量，并作为喷注半径参数的函数给出结果。所有测量均重复执行了"软滴"（soft drop）修整流程，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，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/喷注重心/喷注宽度/LHA，[中心双喷注/向前双喷注/Z+jet，PT]。