Non-BPS Supersymmetric 3pt Amplitude for One Massless, Two Equally Massive Particles

Abstract

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.