Feasibility projections indicate that an optimized NINJA-like detector at the SS floor location can deliver competitive constraints on active-sterile mixing parameters for eV-scale mass-squared differences.
Light Sterile Neutrino in the Minimal Extended Seesaw
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abstract
Motivated by the recent observations on sterile neutrinos, we present a minimal extension of the canonical type-I seesaw by adding one extra singlet fermion. After the decoupling of right-handed neutrinos, an eV-scale mass eigenstate is obtained without the need of artificially inserting tiny mass scales or Yukawa couplings for sterile neutrinos. In particular, the active-sterile mixing is predicted to be of the order of 0.1. Moreover, we show a concrete flavor A_4 model, in which the required structures of the minimal extended seesaw are realized. We also comment on the feasibility of accommodating a keV sterile neutrino as an attractive candidate for warm dark matter.
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Feasibility study of light sterile neutrino searches with a future NINJA-like detector
Feasibility projections indicate that an optimized NINJA-like detector at the SS floor location can deliver competitive constraints on active-sterile mixing parameters for eV-scale mass-squared differences.