TY - JOUR
T1 - A model of radiative neutrino mass
T2 - with or without dark matter
AU - Ahriche, Amine
AU - McDonald, Kristian L.
AU - Nasri, Salah
N1 - Publisher Copyright:
© 2014, The Author(s).
PY - 2014/10
Y1 - 2014/10
N2 - Abstract: We present a three-loop model of neutrino mass whose most-general Lagrangian possesses a softly-broken accidental Z2 symmetry. In the limit that a single parameter vanishes, λ →0, the Z2 symmetry becomes exact and the model contains a stable dark-matter candidate. However, even for finite λ ≪1, long-lived dark matter is possible, giving a unified solution to the neutrino mass and dark matter problems that does not invoke a new symmetry. Taken purely as a neutrino mass model, the new physics can be at the TeV scale. When dark matter is incorporated, however, only a singlet scalar can remain this light, though the dark matter can be tested in direct-detection experiments.
AB - Abstract: We present a three-loop model of neutrino mass whose most-general Lagrangian possesses a softly-broken accidental Z2 symmetry. In the limit that a single parameter vanishes, λ →0, the Z2 symmetry becomes exact and the model contains a stable dark-matter candidate. However, even for finite λ ≪1, long-lived dark matter is possible, giving a unified solution to the neutrino mass and dark matter problems that does not invoke a new symmetry. Taken purely as a neutrino mass model, the new physics can be at the TeV scale. When dark matter is incorporated, however, only a singlet scalar can remain this light, though the dark matter can be tested in direct-detection experiments.
KW - Beyond Standard Model
KW - Cosmology of Theories beyond the SM
KW - Neutrino Physics
KW - Phenomenological Models
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U2 - 10.1007/JHEP10(2014)167
DO - 10.1007/JHEP10(2014)167
M3 - Article
AN - SCOPUS:84919820426
SN - 1126-6708
VL - 2014
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 10
M1 - 167
ER -