"Extra Figure g8cp[c150]" 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].

本数据集给出了描述夸克引发喷注与胶子引发喷注组成的喷注子结构（jet substructure）的测量结果。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，对应积分亮度为35.9 fb⁻¹。本次研究测量了用于表征喷注子结构、区分夸克与胶子引发喷注的广义角距度（Generalized angularities）。此类可观测量对喷注内部的横向动量分布与角距离敏感。本次分析采用了两类事件样本：一类为富含胶子引发喷注的双喷注事件样本，另一类为首次使用的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分箱进行测量，并作为喷注半径参数的函数给出。每项测量均分别针对未修饰喷注与经过软减除（soft drop）修饰的喷注开展，该修饰程序可移除喷注内的软大角度辐射。为便于浏览检索，图表采用代码命名，各字母/数字的依次含义为：未修饰（ungroomed）/修饰（groomed）、AK4/AK8、带电粒子、多重数/p_T²/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）]。