8 papers
Massive neutrinos and lepton-flavour-violating processes
J. A. Casas, A. Ibarra
If neutrino masses and mixings are suitable to explain the atmospheric and solar neutrino fluxes, this amounts to contributions to FCNC processes, in particular . If the…
Baryogenesis, Inflation and Superstrings
J. A. Casas
We study the conditions for successful Affleck-Dine baryogenesis in generic inflation and supergravity scenarios, finding powerful restrictions on them. String-based SUGRA models a…
Charge and Color Breaking
J. A. Casas
The presence of scalar fields with color and electric charge in supersymmetric theories makes feasible the existence of dangerous charge and color breaking (CCB) minima and unbound…
Natural flavour mixing in the MSSM and
B. de Carlos, J. A. Casas, J. M. Moreno
In the absence of any additional assumption it is natural to conjecture that sizeable flavour-mixing mass entries, , may appear in the mass matrices of the scalars of the MSS…
New and Strong Constraints on the Parameter Space of the MSSM from Charge and Color Breaking Directions
J. A. Casas
Although the possible existence of dangerous charge and color breaking (CCB) directions in the MSSM has been known since the early 80's, only particular directions in the field-spa…
Supergravity and the decay
B. de Carlos, J. A. Casas
We evaluate the branching ratio BR() in the minimal supersymmetric standard model (MSSM), determining the corresponding phenomenological restrictions on two attra…