A Monte Carlo Study on the Identification of Quark and Gluon Jets

• 来源期刊: 中国物理快报（英文版）
• 学科: 物理学
• 年，卷（期）: 2002,（5）
• 页码范围: 647-649
• 页数: 3页
• 分类号: O4
• 语种: 英文

摘要

Three-jet events in e+ e- collisions at 91.2 GeV are investigated using both HERWIG and JETSET Monte Carlo generators. The angles among the three jets are used to identify the quark and gluon jets. An ahalysis at the parton level is carried out to ensure the reasonableness of this method and an angular cut is utilized to improve the purity of this identification. The multiplicity inside the identified quark or gluon jets agrees with the quantum chromodynamic predictions qualitatively.