Probing TeV Left-Right Seesaw at Energy and Intensity Frontiers: a Snowmass White Paper

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We discuss ways to probe the origin of neutrino masses at the Energy and Intensity frontiers, in TeV-scale left-right seesaw models where small neutrino masses arise via type-I seesaw mechanism. We consider generic ('vanilla') version of such models as well as a version which leads to 'large' light-heavy neutrino mixing while keeping the neutrino masses small in a natural manner. We point out specific observable implications of these classes of models at the LHC as well as in searches for lepton flavor violating processes such as μ→ eγ and μ→ 3e, and also in searches for lepton number violating neutrinoless double beta decay.