J. C. Romao

Supersymmetric SO(10) Seesaw Mechanism with Low B-L Scale

We propose a new seesaw mechanism for neutrino masses within a class of supersymmetric SO(10) models with broken D-parity. It is shown that in such scenarios the B-L scale can be as low as TeV without generating inconsistencies with gauge coupling unification nor with the required magnitude of the light neutrino masses. This leads to a possibly light new neutral gauge boson as well as relatively light quasi-Dirac heavy leptons. These particles could be at the TeV scale and mediate lepton flavour and CP violating processes at appreciable levels.

Phenomenological tests of supersymmetric A(4) family symmetry model of neutrino mass

Recently Babu, Ma and Valle proposed a model of quark and lepton mixing based on

Supersymmetric SO(10) Seesaw Mechanism with LowB−LScale

A_4

Testing neutrino mixing at future collider experiments

symmetry. Within this model the lepton and slepton mixings are intimately related. We perform a numerical study in order to derive the slepton masses and mixings in agreement with present data from neutrino physics. We show that, starting from three-fold degeneracy of the neutrino masses at a high energy scale, a viable low energy neutrino mass matrix can indeed be obtained in agreement with constraints on lepton flavour violating

Minimal supergravity with R-parity breaking

\mu

A Supersymmetric solution to the solar and atmospheric neutrino problems

and

Minimal Supergravity Scalar Neutrino Dark Matter and Inverse Seesaw Neutrino Masses

\tau

Probing minimal supergravity in the type-I seesaw mechanism with lepton flavor violation at the CERN LHC

decays. The resulting slepton spectrum must necessarily include at least one mass below 200 GeV which can be produced at the LHC. The predictions for the absolute Majorana neutrino mass scale

Higgs production at e+e− colliders

m_0 \geq 0.3

Minimal supergravity radiative effects on the tribimaximal neutrino mixing pattern

eV ensure that the model will be tested by future cosmological tests and