# Probing the Majorana nature of TeV-scale radiative seesaw models at collider experiments 

Mayumi Aoki 1, ∗ and Shinya Kanemura 2, † 

$^{1}$Department of Physics, Tohoku University, 

Aramaki, Aoba, Sendai, Miyagi 980-8578, Japan 

$^{2}$Department of Physics, University of Toyama, 

3190 Gofuku, Toyama 930-8555, Japan 

## Abstract 

A general feature of TeV-scale radiative seesaw models, in which tiny neutrino masses are gen- erated via loop corrections, is an extended scalar (Higgs) sector. Another feature is the Majorana nature; e.g. , introducing right-handed neutrinos with TeV-scale Majorana masses under the dis- crete symmetry, or otherwise introducing some lepton number violating interactions in the scalar sector. We study phenomenological aspects of these models at collider experiments. We find that, while properties of the extended Higgs sector of these models can be explored to some extent, the Majorana nature of the models can also be tested directly at the International Linear Collider via the electron-positron and electron-electron collision experiments. 

PACS numbers: 12.60.Fr, 14.60.St, 14.80.Fd 

Keywords: Radiative seesaw models, Higgs physics, Flavor physics 

