Author:
Herderschee Aidan,Koren Seth,Trott Timothy
Abstract
Abstract
We introduce a manifestly little group covariant on-shell superspace for massive particles in four dimensions using the massive spinor helicity formalism. This enables us to construct massive on-shell superfields and fully utilize on-shell symmetry considerations to derive all possible
$$ \mathcal{N} $$
N
= 1 three-particle amplitudes for particles of spin as high as one, as well as some simple amplitudes for particles of any spin. Throughout, the conceptual and computational simplicity of this approach is exhibited.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
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