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arXiv · 1910.09569

Inverse see-saw neutrino masses in the Littlest Higgs model with T-parity

Francisco del Aguila·José Ignacio Illana·José María Perez-Poyatos·José Santiago
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Abstract

We show that the inverse see-saw is the most natural way of implementing neutrino masses in the Littlest Higgs model with T-parity. The three extra quasi-Dirac neutrinos are needed to cancel the quadratically divergent contributions of the mirror leptons to the Higgs mass. If the T-parity of the heavy neutrino singlets is chosen to be even, their contributions to lepton flavor violating transitions are one-loop finite. The most stringent limits on this scenario result from the non-observation of these transitions. Constraints on neutrino mixing imply an upper bound on the mass of the T-odd mirror leptons at the reach of the LHC and/or future colliders.

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Francisco del Aguila, José Ignacio Illana, José María Perez-Poyatos, José Santiago. 2019-10-21. Inverse see-saw neutrino masses in the Littlest Higgs model with T-parity. https://doi.org/10.1007/jhep12(2019)154

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