Analytic Structure of Three-Mass Triangle Coefficients
High Energy Physics - Phenomenology
2008-11-26 v3
Abstract
``Three-mass triangles'' are a class of integral functions appearing in one-loop gauge theory amplitudes. We discuss how the complex analytic properties and singularity structures of these amplitudes can be combined with generalised unitarity techniques to produce compact expressions for three-mass triangle coefficients. We present formulae for the N=1 contributions to the n-point NMHV amplitude.
Cite
@article{arxiv.0709.2086,
title = {Analytic Structure of Three-Mass Triangle Coefficients},
author = {N. E. J. Bjerrum-Bohr and David C. Dunbar and Warren B. Perkins},
journal= {arXiv preprint arXiv:0709.2086},
year = {2008}
}
Comments
22 pages; v3: NMHV n=point expression added. 7 point expression removed