"Extra Figure g4m[Z254]" 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].

本数据集呈现了用于描述夸克引发喷注与胶子引发喷注组分的喷注子结构（jet substructure）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。本研究测量了广义角距（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距离分布具有敏感性。本次分析采用了两类事件样本：一类是富含胶子引发喷注的双喷注（dijet）事件样本，另一项为首次采用的富含夸克引发喷注的Z+喷注事件样本。我们按喷注横向动量的分箱开展可观测量测量，并将其作为喷注半径参数的函数进行表征。每一项测量均重复执行了软滴（soft drop）修整程序，以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，各字母/数字的含义依次为：未修整/修整状态、AK4/AK8喷注构型、带电粒子相关、多重数/pTD2/推力/宽度/LHA、[中心区双喷注/前向区双喷注/Z+喷注、横向动量PT]。