Prospects for the Zee-Babu Model at the LHC and low energy experiments

TL;DR

This paper evaluates the Zee-Babu model's potential to explain neutrino masses and predicts observable signals at the LHC and low energy experiments, combining analytical and numerical analyses.

Contribution

It provides a comprehensive analysis of the Zee-Babu model's parameter space and experimental signatures using both approximations and Monte Carlo simulations.

Findings

Detection of doubly charged scalar at LHC is a key signal.

Correlations between LHC signals and $ ext{BR}(oldsymbol{ ext{mu}} o ext{e}oldsymbol{ ext{gamma}})$ are identified.

Predictions for $ au$ decays and neutrino parameters are made.

Abstract

We analyze the viability of the Zee-Babu model as an explanation of observed neutrino masses and mixings and the possibility that the model is confirmed or discarded in experiments planned for the very close future. The allowed parameter space is studied analytically by using some approximations and partial data. Then, a complete scanning of all parameters and constraints is performed numerically by using Monte Carlo methods. The cleanest signal of the model will be the detection of the doubly charged scalar at the LHC and its correlation with measurements of the branching ratio of $\mu\to e\gamma$ at the MEG experiment. In addition, the model offers interesting predictions for $\tau^{-}\to\mu^{+}\mu^{-}\mu^{-}$ experiments, lepton-hadron universality tests, the $\theta_{13}$ mixing in neutrino oscillations and the $<m_{\nu}>_{ee}$ parameter of neutrinoless double beta decay.