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Radiative neutrino model with semi-annihilation dark matter
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abstract
We propose a Two-Loop induced radiative neutrino model with hidden gauged $U(1)$ symmetry, in which a dark matter of Dirac fermion arises. The relic density gets contribution from annihilation and semi-annihilation due to a residual $\mathbb{Z}_3$ parity. After imposing the requirement of neutrino oscillation data and lepton flavour violation bounds, we find out that the semi-annihilation plays a crucial role in order to satisfy the relic density constraint $0.117 < \Omega h^2 < 0.123$, by proceeding near either one of two deconstructive scalar resonances. Our numerical analysis demonstrates the allowed region for the DM-Scalar coupling with the DM mass in $(80, 400)$ GeV.
Forward citations
Cited by 1 Pith paper
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Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final states
A published asymmetric dark matter mechanism from semi-annihilation is shown to violate unitarity; a corrected two-species model with long-lived final states can produce the observed relic density.
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