科研之友
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摘要
"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.
- 出版日期2008-4
