Neutrino mass constraints and a simple model of R-Parity violation

Supersymmetry without R-Parity naturally leads to nonzero (Majorana-) neutrino masses without the need to introduce heavy righthanded neutrinos or additional generations. However, the most general ansatz introduces 48 new couplings to the superpotential and therefore leads to a lack of predictivity. We discuss a simple model based on the combination of two flavor symmetries which reduces the number of independent couplings to six and confront these with present experimental neutrino constraints. We further investigate the resulting implications for other processes.