Massive particles and unitarity cuts

Details Massive particles and unitarity cuts Massive particles and unitarity cuts

2012-02-11

arxiv.org/abs/1202.2426v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

To appear in the proceedings of the LCWS 2011, September 2011, Granada, Spain

Scientific paper

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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