A two loop radiative neutrino model

Baek, Seungwon (Department of Physics, Korea University, Seoul, 02841, Republic of Korea) ; Okada, Hiroshi (Asia Pacific Center for Theoretical Physics, Pohang, Gyeongbuk, 790-784, Republic of Korea) ; Orikasa, Yuta (Institute of Experimental and Applied Physics, Czech Technical University, Prague, 12800, Czech Republic)

07 March 2019

Abstract: We explore the possibility to explain a bosonic dark matter candidate with a gauge singlet inside the loop to generate the neutrino mass matrix at two-loop level. The mass matrix is suppressed by a small mixing that comes from the bound on direct detection experiments of the dark matter, and equivalent of the three-loop neutrino model due to the small mixing between neutral inert bosons. Here, our setup is the Zee-Babu type scenario with Z3 discrete symmetry, in which we consider the neutrino oscillation data, lepton flavor violations, muon g−2 , μ−e conversion rate, lepton flavor-changing and conserving Z boson decay and bosonic dark matter candidate.


Published in: Nuclear Physics B 941 (2019) 744-754 DOI: 10.1016/j.nuclphysb.2019.03.002
License: CC-BY-3.0



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