FUSING GAUGE-THEORY TREE AMPLITUDES INTO LOOP AMPLITUDES

被引：860

作者：

BERN, Z

DIXON, L

DUNBAR, DC

KOSOWER, DA

机构：

[1] STANFORD UNIV, STANFORD LINEAR ACCELERATOR CTR, STANFORD, CA 94309 USA

[2] CTR ETUD SACLAY, SERV PHYS THEOR, F-91191 GIF SUR YVETTE, FRANCE

来源：

NUCLEAR PHYSICS B | 1995年 / 435卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0550-3213(94)00488-Z

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We identify a large class of one-loop amplitudes for massless particles that can be constructed via unitarity from tree amplitudes, without any ambiguities. One-loop amplitudes for massless supersymmetric gauge theories fall into this class; in addition, many non-supersymmetric amplitudes can be rearranged to take advantage of the result. As applications, we construct the one-loop amplitudes for n-gluon scattering in N = 1 supersymmetric theories with the helicity configuration of the Parke-Taylor tree amplitudes, and for six-gluon scattering in N = 4 super-Yang-Mills theory for all helicity configurations.

引用

页码：59 / 101

页数：43

共 86 条

[1] THE BACKGROUND FIELD METHOD AND THE S-MATRIX [J].