Neutrino Masses in the Composite Little Higgs Model

Abstract

The composite little Higgs model, a UV completion for the $SU(5)/SO(5)$ little Higgs model, incorporates supersymmetry into strong gauge dynamics. We extend the study of flavor physics in the model, and find that it is similar to the bosonic technicolor model. Lepton flavor violations and neutrino mass matrix arise once R-parity violating superpotential is introduced to the model, as in the MSSM. We identify various low-energy effective $\Delta L=2$ lepton flavor violating operators, and find that most of them are similar to those of the R-parity violating MSSM. There is a new operator which involves only leptons and the pseudo-Nambu Goldstone bosons of the little Higgs model. We further study a possibility that this operator gives a dominant contribution to the neutrino mass matrix.

arXiv comment17 pages, 4 figures; Changed contents;v3 corrected typos, to appear in JHEP

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• Charged Lepton Flavour Violation and (g-2)_mu in the Littlest Higgs Model with T-Parity: a clear Distinction from Supersymmetry
• Neutrino masses and lepton-number violation in the Littlest Higgs scenario
• Doubly-charged particles at the Large Hadron Collider
• A Simplified Model Approach to Same-sign Dilepton Resonances
• Lepton number violation in Little Higgs model
• Lepton flavor violating signals of a little Higgs model at the high energy linear $e^{+}{e}^{-}$ colliders
• Single production of the doubly charged scalar in the littlest Higgs model
• Probing a new decay of vector-like top partner mediated by heavy Majorana neutrino via single production
• Neutrinos in the Simplest Little Higgs Model
• Not T-parity but C-parity
• Phenomenological implications of the new Littlest Higgs model with T-parity