Common Framework for Inflation, Dark Matter, Baryogenesis and Neutrino Masses in the Scotogenic Model

Debasish Borah,P S Bhupal Dev,Abhass Kumar

doi:10.1007/978-981-33-4408-2_40

Debasish Borah, P S Bhupal Dev + Show 1 more

https://doi.org/10.1007/978-981-33-4408-2_40

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We consider the scotogenic model involving an extra inert scalar doublet and three SM-singlet fermions, all under an additional \(\mathbb {Z}_2\) symmetry, to explain inflation, dark matter, baryogenesis and neutrino masses simultaneously. The inert scalar doublet is coupled to gravity non-minimally and after a conformal transformation forms the inflation in the early Universe.Later its lightest scalar component freezes-out to give the dark matter candidate. Baryogenesis happens via leptogenesis by the decay of \(N_1\) to SM leptons and the inert doublet particles. The \(N_i\)’s and the inert doublet combine with the SM neutrinos and the Higgs vacuum expectation value (vev) to generate neutrino masses at the loop level. We show that with the scotogenic model, we get a very economical model for combining inflation with dark matter, baryogenesis and neutrino masses.

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