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2019

On the interplay between the loop-tree duality and helicity amplitudes

Driencourt-Mangin, Felix, Rodrigo, German, Sborlini, German F. R. et al.

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The spinor-helicity formalism has proven to be very efficient in the calculation of scattering amplitudes in quantum field theory, while the loop tree duality (LTD) representation of multi-loop integrals exhibits appealing and interesting advantages with respect to other approaches.

In view of the most recent developments in LTD, we exploit the synergies with the spinor-helicity formalism to analyse illustrative one- and two-loop scattering processes.
We focus our discussion on the local UV renormalisation of IR and UV finite amplitudes and present a fully automated numerical implementation that provides efficient expressions which are integrable directly in four space-time dimensions.

On the interplay between the loop-tree duality and helicity amplitudes · Around

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