Neutrino Masses and A TeV Scale Seesaw Mechanism

Physical review D: Particles and fields (Impact Factor: 4.86). 03/2010; 82(1). DOI: 10.1103/PhysRevD.82.016008
Source: arXiv


A simple extension of the Standard Model providing TeV scale seesaw mechanism is presented. Beside the Standard Model particles and right-handed Majorana neutrinos, the model contains a singly charged scalar, an extra Higgs doublet and three vector like singly charged fermions. In our model, Dirac neutrino mass matrix raises only at the loop level. Small but non-zero Majorana neutrino masses come from integrating out heavy Majorana neutrinos, which can be at the TeV scale. The phenomenologies of the model are investigated, including scalar mass spectrum, neutrino masses and mixings, lepton flavor violations, heavy neutrino magnetic moments as well as possible collider signatures of the model at the LHC. Comment: 13 pages, 4 figures. references added

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    • "For the LL case there are models with NP at Λ ∼ 1 TeV for sufficiently suppressed couplings C (5) ∼ 10 −11 (see, for instance, Refs. [45] [46] [47] [48] [49]). We can also have different scales within the model, as in the LR model below, where the new leptons can have masses below a TeV and be observable at the LHC. "
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