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FIMP DM in the Extended Hyperchargeless Higgs Triplet Model

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arxiv 2107.01578 v2 pith:QDN3CIMK submitted 2021-07-04 hep-ph

FIMP DM in the Extended Hyperchargeless Higgs Triplet Model

classification hep-ph
keywords fermionmixingadditionalanglescurrentdarkdensitydoublet
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We perform an exclusive study on the Feebly Interacting Massive Particle (FIMP) dark matter candidate in an extended hyperchargeless ($Y=0$) Higgs triplet model. The additional $Z_2$ odd neutral fermion singlet plays the role of dark matter with support from two other vector-like fermion doublets. The mixing between the neutral component of a doublet and singlet fermions controls the current relic density through the Freeze-in mechanism, whereas the additional doublet fermion helps to get the neutrino mass and mixing angles. We obtain a broad region of the parameter spaces satisfying the current relic density and neutrino mass and mixing angles.

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