Recent Progress in One-Loop Multi-Parton Calculations
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. (Contribution presented by L. Dixon at the workshop ``QCD'94'', Montpellier, France, July 7-13, 1994. To appear in those proceedings.)
关键词
引用
@article{arxiv.hep-ph/9409214,
title = {Recent Progress in One-Loop Multi-Parton Calculations},
author = {Z. Bern and L. Dixon and D. C. Dunbar and D. A. Kosower},
journal= {arXiv preprint arXiv:hep-ph/9409214},
year = {2010}
}
备注
SLAC-PUB-6658, LaTeX, 4 pages