Constraints on both bilinear and trilinear R-parity violating couplings from neutrino laboratories and astrophysics data
Résumé
We consider neutrino masses generated at tree level and at one loop, through fermion--sfermion loop diagrams, in the MSSM with R-parity violation. Using the $(3\\times 3)$ mass and mixing matrices for three generations of neutrinos and the present experimental results on neutrinos from laboratories and astrophysics simultaneously, we put bounds on both trilinear ($\\lambda_{ijk}, \\lambda\'_{ijk}$) and bilinear ($\\mu_{e},\\mu_\\mu,\\mu_\\tau$) R-parity-violating couplings.