2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/118410The spectral decomposition of all (n,2,2) Bell operators ($2^{2^n}$ in number, $n \ge 2$), as introduced by Werner and Wolf, is done. Its implications on the characterization of Bell operators as probes of entanglement are considered in detail.Submitted to Physical Review AQuantum Physicstext