2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/227302We present simple first-class-constraint actions and BRST operators for the 4D N=4 superparticle. Each generation of ghosts has 2 super-indices, like the coordinates. The constraints that define projective superspace close in a super Yang-Mills background due to the presence of a (non-central) U(1) generator in the algebra.2 references addedHigh Energy Physics - Theorytext