Cachazo-Svrcek-Witten rules for tree-level gluonic amplitudes revisited  

作　　者：Wen-Jie Zhang Jun-Bao Wu Chuan-Jie Zhu 

机构地区：[1]Center for Joint Quantum Studies and Department of Physics,School of Science,Tianjin University,Tianjin 300350,China [2]Peng Huanwu Center for Fundamental Theory,Hefei 230026,China [3]College of Mathematics and Physics Science,Hunan University of Arts and Science,Changde 415000,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2022年第4期20-31,共12页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11975164,11935009,12047502,and 11947301);Natural Science Foundation of Tianjin(Grant No.20JCYBJC00910);supported by a fund from Hunan University of Arts and Science。

摘　　要：We provide a new proof of Cachazo-Svrcek-Witten rules for tree-level gluonic amplitudes.As a key step,we explicitly demonstrate the cancellation of spurious poles originating from the maximally helicity violating vertices in these rules.To achieve this,we introduce specially-defined two-off-shell-line sub-amplitudes and examine their residues at spurious poles.

关 键 词：general properties of perturbation theory perturbative calculations dualities in gauge field theories 

分 类 号：O572.31[理学—粒子物理与原子核物理]