SUSY Ward identities for multi-gluon helicity amplitudes with massive quarks
Christian Schwinn, Stefan Weinzierl
TL;DR
This paper employs supersymmetric Ward identities to connect multi-gluon helicity amplitudes with massive quarks to scalar amplitudes, enabling the use of on-shell recursion for top quark scattering calculations.
Contribution
It introduces a method to relate massive quark amplitudes to scalar amplitudes using supersymmetry, facilitating calculations with on-shell recursion.
Findings
Derived relations between quark and scalar amplitudes
Applied on-shell recursion to top quark scattering
Simplified calculations of multi-gluon processes with massive quarks
Abstract
We use supersymmetric Ward identities to relate multi-gluon helicity amplitudes involving a pair of massive quarks to amplitudes with massive scalars. This allows to use the recent results for scalar amplitudes with an arbitrary number of gluons obtained by on-shell recursion relations to obtain scattering amplitudes involving top quarks.
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