摘要
We discuss a linear seesaw model with a field content as minimum as possible,introducing a modular S_(4)using gauged U(1)_(B−L) symmetries.Owing to the rank two neutrino mass matrix,we obtain a vanishing neutrino mass eigenvalue,and only the normal mass hierarchy of neutrinos is favored via the modular S_(4)symmetry.In our numericalΔχ^(2)analysis,we especially determine a relatively sharp prediction on the sum of neutrino masses to be approximately 60 meV,in addition to other predictions.
基金
Supported by an appointment to the JRG Program at the APCTP through the Science and Technology Promotion Fund and Lottery Fund of the Korean Government。
