2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/38699We present a new staggered discretization of the Dirac operator. In comparison with standard staggered fermions, real and imaginary parts are located in different nodes. Doubling gives only a doublet of Dirac fermions which we propose to interpret as a physical (lepton or quark) doublet. Contrary to usual staggered fermions, we have no exact chiral symmetry but obtain a generalization of the Ginsparg-Wilson relation.Corrected important definitions (23), (25). 9 pages Latex, no figuresHigh Energy Physics - Latticetext