RECENT PROGRESS IN ONE-LOOP MULTI-PARTON CALCULATIONS

被引：5
作者：
BERN, Z
DIXON, L
DUNBAR, DC
KOSOWER, DA
机构：
[1] STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309
[2] UNIV COLL SWANSEA,SWANSEA,W GLAM,WALES
[3] CENS,SERV PHYS THEOR,F-91191 GIF SUR YVETTE,FRANCE
[4] UNIV CALIF LOS ANGELES,DEPT PHYS,LOS ANGELES,CA 90024
来源：
NUCLEAR PHYSICS B | 1995年
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0920-5632(95)00060-M
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 describe techniques that simplify the calculation of one-loop QCD amplitudes with many external legs, which are needed for next-to-leading-order (NLO) corrections to multi-jet processes. The constraints imposed by perturbative unitarity, collinear singularities and a supersymmetry-inspired organization of helicity amplitudes are particularly useful. Certain sequences of one-loop helicity amplitudes may be obtained for an arbitrary number of external gluons using these techniques. We also report on progress in completing the set of one-loop helicity amplitudes required for NLO three-jet production at hadron colliders, namely the amplitudes with two external quarks and three gluons.
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页码：146 / 149
页数：4
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