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Probing Zee-Babu states at Muon Colliders
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abstract
The Zee-Babu model is a minimal realization of radiative neutrino mass generation mechanism at the two-loop level. We study the phenomenology of this model at future multi-TeV muon colliders. After imposing all theoretical and low-energy experimental constraints on the model parameters, we find that the Zee-Babu states are expected not to reside below the TeV scale, making it challenging to probe them at the LHC. We first analyze the production rates for various channels, including multi singly-charged and/or doubly-charged scalars at muon colliders. For concreteness, we study several benchmark points that satisfy neutrino oscillation data and other constraints and find that most channels have large production rates. We then analyze the discovery reach of the model using two specific channels: the pair production of singly- and doubly-charged scalars. For the phenomenologically viable scenarios considered in this study, charged scalars with masses up to ${\cal O}(3$--$4)$ TeV can be probed for the center-of-mass energy of $10$ TeV and total luminosity of $10~{\rm ab}^{-1}$.
Forward citations
Cited by 3 Pith papers
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Probing Doubly Charged Higgs Bosons with Three-Body Associated Production at Future $e^+e^-$ Colliders
Doubly charged Higgs bosons in the type-II seesaw 2HDM can be produced via 2-to-3 associated channels at e+e- colliders with cross sections up to ~10^2 fb and good 4-lepton discovery sensitivity.
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Searching for charged Higgs bosons via $e^+ e^- \to H^\pm W^\mp S$ at the ILC
A detector-level Monte Carlo study shows that e+e- -> H± W∓ S in the type-X 2HDM could be discovered at the ILC with 500 GeV and 500 fb^-1.
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Ultraviolet Completion of a Two-loop Neutrino Mass Model
A new SU(5) grand unified version of the Zee-Babu model predicts TeV-scale colored scalars, a vector-like down quark, and observable proton decay p→e+π0 at Hyper-Kamiokande.
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