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arXiv · 1202.2426

Massive particles and unitarity cuts

Ruth Britto·Edoardo Mirabella
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Abstract

We present an extension of the spinor integration formalism of one loop amplitudes from the double-cut to the single-cut case. This technique can be applied for the computation of the tadpole coefficients. Moreover we describe an off-shell continuation of one loop amplitudes that allows a finite evaluation of the unitarity cuts in the channel of a single massive external fermion.

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Ruth Britto, Edoardo Mirabella. 2012-02-11. Massive particles and unitarity cuts. https://arxiv.org/abs/1202.2426

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