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Paper detail

Massive particles and unitarity cuts

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.

preprint2012arXivOpen access
Ruth BrittoEdoardo Mirabella
hep-ph
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Ruth BrittoEdoardo Mirabella

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