Many high-charged scalars in LHC searches and Majorana neutrino mass generations

One natural way to understand the excess of the measured H -> gamma gamma rate over the standard model expectation at the Large Hadron Collider (LHC) is to have charged scalar bosons, existing in most of the standard model extensions. Motivated by this LHC result, we explore whether it also sheds light on solving the small neutrino mass generation problem. We concentrate on a class of models with high-dimensional representations of scalars to realize Majorana neutrino masses at the two-loop level without imposing any new symmetry. In these models, multiscalars with electric charges higher than two are naturally expected, which not only enhance the H -> gamma gamma rate, but provide more searching grounds at the LHC. In particular, the rate of H -> Z gamma also changes similar to that of the diphoton channel. DOI: 10.1103/PhysRevD.87.077702