Microscopic Consequences of a Two-Higgs Doublet Model on Neutrino Masses

The minimal extension of the standard model can easily incorporate neutrino masses using the same Higgs mechanism already available and now experimentally tested for other fundamental fermions. However, this requires neutrino coupling to the Higgs field considered unnaturally small, and models have been proposed using a second Higgs field with a vacuum expectation value (VEV) much smaller than the one responsible for the mass generation of the other fermions. In these so-called 'neutrinophilic' models, which are also appealing for their natural incorporation of supersymmetry and matter/antimatter asymmetry, the Compton wavelength of the second Higgs field is assumed to be in the micrometer range, in principle opening up the possibility to the manipulation of its VEV in an electromagnetic cavity with properly designed boundary conditions. I will discuss the consequences of these assumptions and the feasibility of time-of-flight experiments with mass modulation at the next generation of high-intensity neutrino beams.