"Table 2" of "Production of K0(S) and Lambda in quark and gluon jets from Z0 decay."

CERN-LEP. Measurment of the production rates of K0S mesons and LAMBDA baryons in quark and gluon jets from Z0 decays produced in E+ E- interactions. Two complementary techniques are used. In the first approach (C=ENERGY BASED), jets were selected using different jet finding algorithms and ordered according to their energy. In the second approach (C=Y EVENTS), a new method of identifying quark jets based on the collimation of energy flow around the jet axis isintroduced and was used to anti-tag gluon jets in symmetric (Y-shaped) three-je tevents. In the cone jet finding algorithm a cone size of 30 deg is assumed.

本数据集来自欧洲核子研究中心大型正负电子对撞机（CERN-LEP），旨在测量正负电子相互作用（E+E- interactions）产生的Z0玻色子（Z0）衰变所生成的夸克喷注（quark jet）与胶子喷注（gluon jet）中，K0S介子（K0S meson）和Λ重子（LAMBDA baryon）的产生率。本研究采用两种互补分析方法：第一种方法（标识为C=ENERGY BASED，即能量基准法）通过多种喷注寻找算法（jet finding algorithm）筛选喷注，并依据喷注能量完成排序；第二种方法（标识为C=Y EVENTS，即Y事件法）中，提出了一种基于喷注轴（jet axis）周围能量流（energy flow）准直性的夸克喷注识别新方法，并将其用于对称Y形三喷注事件（three-jet events）中的胶子喷注反标记。在锥形喷注寻找算法（cone jet finding algorithm）中，预设锥角尺寸为30度。