Non-BPS supersymmetric 3pt amplitude for one massless, two equally massive particles

In this paper, the non-BPS amplitudes ( Z<2m) are considered. Utilizing on-shell methods, the three point amplitudes of two equal-mass particles and one massless particle were constructed, where the two massive particles are non-BPS states. We verify the result by matching the Z=0 and BPS limit with N=2 supersymmetry. As an application we derive the non-BPS coupling for N=4 super-Maxwell and supergravity. (C) 2021 The Author(s). Published by Elsevier B.V.

Automated summary

This study focuses on non-BPS amplitudes (Z<2m), constructing three-point amplitudes of two equal-mass particles and one massless particle using on-shell methods, where the two massive particles are non-BPS states. The results are verified through matching with N=2 supersymmetry, and a non-BPS coupling for N=4 super-Maxwell and supergravity is derived as an application.