One-loop neutrino mass model without any additional symmetries

TL;DR

This paper introduces a one-loop radiative neutrino mass model utilizing large $SU(2)_L$ multiplets, eliminating the need for extra symmetries, and explores its phenomenological implications including dark matter and collider detection prospects.

Contribution

It presents a novel one-loop neutrino mass model with large multiplets that does not require additional symmetries, along with detailed phenomenological analysis.

Findings

Model successfully generates neutrino masses at one-loop level.

Dark matter candidate identified within the model.

Potential collider signatures discussed.

Abstract

We propose a radiative seesaw model at one-loop level, introducing fields with large multiplet of $SU(2)_L$. Thanks to large representations, any additional symmetries are not needed. In this framework, we formulate lepton and new fermion sector such as mass matrices, LFVs, and muon $g-2$. Furthermore, we show our cut-off scale via RGEs of $SU(2)_L$, and numerical analysis at a benchmark point included in dark matter candidate. Finally, we brief discuss possibility to detect at colliders.