Abstract:We extend the 2 → 2 gravitino scattering amplitude computed in [1] to an arbitrary $$ \mathcal{N} $$
N
= 1 supergravity model of one chiral and one vector multiplet, in a Minkowski background with supersymmetry breaking driven by both F- and D-terms. We find that the cancellation of the leading term in $$ \mathcal{O} $$
O
(κ2E4/|m3/2|2), that would lead to a breakdown of perturbative unitarity at a scale Λ ~ MSUSY, is a consequence of the van… Show more
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