ONE-LOOP N-POINT GAUGE-THEORY AMPLITUDES, UNITARITY AND COLLINEAR LIMITS

被引：1111

作者：

BERN, Z

DIXON, L

DUNBAR, DC

KOSOWER, DA

机构：

[1] UNIV CALIF LOS ANGELES, DEPT PHYS, LOS ANGELES, CA 90024 USA

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

[3] STANFORD UNIV, STANFORD LINEAR ACCELERATOR CTR, STANFORD, CA 94305 USA

来源：

NUCLEAR PHYSICS B | 1994年 / 425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)90179-1

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 present a technique which utilizes unitarity and collinear limits to construct ansatze for one-loop amplitudes in gauge theory. As an example, we obtain the one-loop contribution to amplitudes for n-gluon scattering in N = 4 supersymmetric Yang-Mills theory with the helicity configuration of the Parke-Taylor tree amplitudes. . We prove that our N = 4 ansatz is correct using general properties of the relevant one-loop n-point integrals. We also give the ''splitting amplitudes'' which govern the collinear behavior of one-loop helicity amplitudes in gauge theories.

引用

页码：217 / 260

页数：44

共 76 条

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