Two-loop neutrino mass generation through leptoquarks

We present a new model of radiative neutrino mass generation wherein TeV scale leptoquark scalars induce tiny neutrino masses as two-loop radiative corrections. The neutrino oscillation parameter sin(2) theta(13) is predicted to be close to the current experimental limit within the model. Rare lepton flavor violating processes mediated by leptoquarks have an interesting pattern: mu -> e gamma may be suppressed, while mu -> 3e and mu - e conversion in nuclei are within reach of the next generation experiments. New CP violating contributions to B-s - (B) over bars mixing via leptoquark box diagrams are in a range that can explain the recently reported discrepancy with the standard model. D-s(-) -> l(-) v decays mediated by leptoquarks brings theory and experiment closer, removing an observed 2 sigma anomaly. Muon g - 2 receives new positive contributions, which can resolve the discrepancy between theory and experiment. The leptoquarks of the model are accessible to the LHC, and their decay branching ratios probe neutrino oscillation parameters. (C) 2010 Elsevier B.V. All rights reserved.