2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52966We present a new massive spin two field theory which has smooth massless limit based on BRS formalism. Our model contains a parameter a which extendes Fierz-Pauli's mass term. Although redundant scalar ghost exists in our model, physical degree of freedom is still five for the sake of existence of the Deser-Waldron type gauge symmetry. Origin of vDVZ discontiunity can be studied at the Fierz-Pauli limit a -> 1.8 pages, LaTeX2eHigh Energy Physics - Theorytext