Gauge amplitude identities by on-shell recursion relation in S-matrix program

被引:161
|
作者
Feng, Bo [2 ]
Huang, Rijun [1 ]
Jia, Yin [1 ]
机构
[1] Zhejiang Univ, Zhejiang Inst Modern Phys, Dept Phys, Hangzhou 310003, Zhejiang, Peoples R China
[2] Zhejiang Univ, Ctr Math Sci, Hangzhou 310003, Zhejiang, Peoples R China
关键词
S-matrix; On-shell recursion relation; Gauge theory amplitude; TREE AMPLITUDES;
D O I
10.1016/j.physletb.2010.11.011
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Using only the Britto-Cachazo-Feng-Witten (BCFW) on-shell recursion relation we prove color-order reversed relation, U(1)-decoupling relation, Kleiss-Kuijf (KK) relation and Bern-Carrasco-Johansson (BCJ) relation for color-ordered gauge amplitude in the framework of S-matrix program without relying on Lagrangian description. Our derivation is the first pure field theory proof of the new discovered BCJ identity, which substantially reduces the color-ordered basis from (n - 2)! to (n - 3)!. Our proof gives also its physical interpretation as the mysterious bonus relation with 1/z(2) behavior under suitable on-shell deformation for no adjacent pair. (C) 2010 Elsevier B.V. All rights reserved.
引用
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页码:350 / 353
页数:4
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