Year: 2025
Type: article
Abstract: We argue that the long-standing issues of neutrino mass and dark matter can be manifestly solved in a dark gauge symmetry U ( 1 ) D that transforms nontrivially only for three right-handed neutrinos ν 1 , 2 , 3 R —the counterparts of known left-handed neutrinos. This theory assigns the ν 1 , 2 , 3 R dark charge to be D = 0 , − 1 , and + 1 , respectively, in order for anomaly cancelation. Additionally, it imposes an inert Higgs doublet η and two Higgs singlets ξ , ϕ with dark charge D = + 1 , − 1 , and + 2 , respectively. That said, the dark symmetry is broken by ϕ (by two units) down to a dark parity P D = ( − 1 ) D , for which ν 2 , 3 R and η , ξ are odd, whereas all other fields are even due to D = 0 . The lightest of these odd fields is stabilized by P D , which is responsible for dark matter. Neutrino masses are generated by a scotoseesaw scheme, in which the seesaw part is mediated by ν 1 R , while the scotogenic part is mediated by ν 2 , 3 R , for which the hierarchy of atmospheric and solar neutrino mass splittings is explained.
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4407407005