2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/53759This is first of the two invited lectures presented (by D. V. Ahluwalia) at the ``XVII International School of Theoretical Physics: Standard Model and Beyond' 93.'' The text is essentially based on a recent publication by the present authors [Phys. Lett. B 316 (1993) 102]. Here we show that the Dirac-like construct in the $(j,0)\oplus(0,j)$ representation space supports a Bargmann-Wightman-Wigner-type quantum field theory.Los Alamos National Laboratory Preprint LA-UR-93-4315High Energy Physics - Theorytext