We calculate the dominant contributions to the the muon g − 2 at the twoloop level due to a pseudoscalar boson that may exist in any exotic Higgs sector in most extensions of the standard model. The… (More)

We propose an alternative interpretation of the top events discovered at the Teva-tron in 1995. Given that the charge of the b quark jet cannot be measured for the whole sample with certainty, the… (More)

We consider the phenomenological consequences of a hidden Higgs sector extending the Standard Model (SM), in which the “shadow Higgs” are uncharged under the SM gauge groups. We consider a simple… (More)

We study the generation of neutrino masses in the SU(3)W electroweak unified theory in M4 × S1/(Z2 ×Z ′ 2) spacetime. By appropriate orbifolding, the bulk symmetry SU(3)W is broken into SU(2)L ×… (More)

The 1999 precision electroweak data from LEP and SLC persist in showing some slight discrepancies from the assumed standard model, mostly regarding b and c quarks. We show how their mixing with… (More)

We calculate the two–loop contributions to the electric dipole moments of the electron and the neutron mediated by charged Higgs in a generic supersymmetric theories. The new contributions are… (More)

1550-7998=20 Models involving large extra spatial dimension(s) have interesting predictions on lepton flavor violating processes. We consider some five-dimensional (5D) models which are related to… (More)

We study the constraints the ∆F = 2 processes in the neutral meson sector place on the admissible form of quark mass matrices that can reproduce the experimentally observed quark mass spectrum and… (More)

We study the connection between charged lepton electric dipole moments, dl (l = e, μ, τ), and seesaw neutrino mass generation in a simple two Higgs doublet extension of the Standard Model plus three… (More)

We explore a mechanism for radiatively generating neutrino Majorana masses in a 5 dimensional orbifold SU(5) unification model without introducing right-handed singlets. The model is… (More)