1212.5528 (Guan-nan Li et al.)

Lepton number violation and $h\to γγ$ in a radiative inverse
seesaw dark matter model    [PDF]

Guan-nan Li, Gang Guo, Bo Ren, Ya-Juan Zheng, Xiao-Gang He

We study phenomenological implications of a radiative inverse seesaw dark matter model. In this model because neutrino masses are generated at two loop level with inverse seesaw, the new physics mass scale can be as low as a few hundred GeV and the model also naturally contain dark matter candidate. The Yukawa couplings linking the SM leptons and new particles can be large leading to large lepton flavour violating effects. We find that future experimental data on $\mu \to e \gamma$ and $\mu - e$ conversion can further test the model. The new charged particles can affect significantly the $h \to \gamma \gamma$ branching ratio in the SM which is able to explain the deviation between the SM prediction and the LHC data. We also study some LHC signatures of the new particles in the model.

View original: http://arxiv.org/abs/1212.5528