Analytic Structure of Three-Mass Triangle Coefficients

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``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.
22 pages; v3: NMHV n=point expression added. 7 point expression removed

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/199108

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0709.2086
 http://arxiv.org/abs/0709.2086
 JHEP0804:038,2008
 doi:10.1088/1126-6708/2008/04/038

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arXiv