Abstract
In the context of the Scotogenic model, we have investigated for the largest possible Yukawa couplings without inducing large charged lepton flavor violations (CLFVs). The electro-weak symmetry breaking (EWSB) mass scale inert, and the lightest Majorana fermion is identified as the dark matter field and generated neutrino mass radiatively along with the TeV scale inert scalars. A generalized parameterization has been proposed to obtain the maximum Yukawa couplings while satisfying neutrino mass and mixing, dark matter relic density (DM RD), the conversion rate of leptons in nuclei (CR), and CLFV bounds simultaneously. With the reduced number of phenomenology-relevant parameters to merely three, we also obtained the allowed parameter space with these large Yukawa couplings.
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Notes
This is the approximate neutrino mass matrix for very minute mass splitting between inert scalars \({{\phi }_{s}}\) and \({{\phi }_{p}}\), i.e., \(m_{{{{\phi }_{s}}}}^{2} - m_{{{{\phi }_{p}}}}^{2} \sim \widetilde \lambda {{{v}}^{2}} \ll M_{{{{N}_{i}}}}^{2}, m_{{{{\phi }_{s}}}}^{2} {\text{and }}m_{{{{\phi }_{p}}}}^{2}\).
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Avnish Maximum Yukawa Couplings for WIMP Majorana Dark Matter in Scotogenic Model. Phys. Part. Nuclei Lett. 20, 1146–1149 (2023). https://doi.org/10.1134/S1547477123050084
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DOI: https://doi.org/10.1134/S1547477123050084