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Radiative Dirac neutrino mass, neutrinoless quadruple beta decay, and dark matter in B-L extension of the standard model.

Radiative Dirac neutrino mass, neutrinoless quadruple beta decay, and dark matter in B-L extension of the standard model.

Authors :
Arnab Dasgupta
Sin Kyu Kang
Popov, Oleg
Source :
Physical Review D: Particles, Fields, Gravitation & Cosmology. 10/15/2019, Vol. 100 Issue 8, p1-1. 1p.
Publication Year :
2019

Abstract

We propose that neutrino Dirac masses can be generated through a scotogenic scenario while violating the lepton number by four units by extending the standard model to have an anomaly free U(1)B-L, which is spontaneously broken to a residual Z4 symmetry. Z4 symmetry ensures the Dirac nature of neutrinos and simultaneously stabilizes dark matter. Although neutrinoless double beta decay is exactly absent, this model predicts a nonzero neutrinoless quadruple beta decay (0ν4β). It is shown that the 0ν4β can be enhanced thanks to the introduction of a new scalar field without affecting tiny neutrino masses and the relic density of dark matter. We perform numerical analysis for a 0ν4β, dark matter, and direct detection by imposing cosmological, collider, and theoretical constraints. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
24700010
Volume :
100
Issue :
8
Database :
Academic Search Index
Journal :
Physical Review D: Particles, Fields, Gravitation & Cosmology
Publication Type :
Periodical
Accession number :
139594853
Full Text :
https://doi.org/10.1103/PhysRevD.100.075030