We show that the minimal R-parity breaking model characterized by an effective bilinear violation of R-parity in the superpotential is consistent with minimal N=1 supergravity unification with… (More)

The simplest unified extension of the Minimal Supersymmetric Standard Model with bi-linear R–parity violation naturally predicts a hierarchical neutrino mass spectrum, suitable to explain atmospheric… (More)

We study the possibilities of spontaneous CP violation in the Next-to-Minimal Supersymmetric Standard Model with an extra singlet tadpole term in the scalar potential. We calculate the Higgs boson… (More)

We derive the width of the Higgs boson into vector bosons. General formulas are derived both for the on–shell decay H → V V as well for the off–shell decays, H → V V and H → V V , where V = γ,W, Z.… (More)

We re-examine spontaneous CP violation at the tree level in the context of the next-to-minimal supersymmetric standard model (NMSSM) with two Higgs doublets and a gauge singlet field. We analyse the… (More)

It has been pointed out that supersymmetric extensions of the Standard Model can induce significant changes to the theoretical prediction of the ratio Γ (K → eν)/Γ (K → μν) ≡ RK , through lepton… (More)

M. Hirsch, ∗ J. C. Romao, † J. W. F. Valle, ‡ and A. Villanova del Moral § AHEP Group, Institut de F́ısica Corpuscular – C.S.I.C./Universitat de València Edificio Institutos de Paterna, Apt 22085,… (More)

We re-examine spontaneous CP violation (SCPV) at the tree level in the context of the next-to-minimal supersymmetric standard model (NMSSM) with two Higgs doublets and a gauge singlet field. We… (More)

We discuss gauge and Yukawa unification in the context of a supersymmetric model with bilinear R–parity violation. We show that this model allows b− τ Yukawa unification for any value of tanβ while… (More)

We review models where R–parity is broken, either spontaneously or explicitly. In this last case we consider the situation where R–parity is broken via bilinear terms in the superpotential. We show… (More)