Tetsuro Eguchi

Exact parameter-free sum rules for the Pontecorvo–Maki–Nakagawa–Sakata matrix from a split-and-recombined tribimaximal construction

We present an exact, fixed-input sum-rule construction for the Pontecorvo–Maki–Nakagawa–Sakata (PMNS) matrix: a deterministic ansatz combining a Koide–Brannen square-root mass-ratio input with a discrete split-and-recombined deformation of tribimaximal mixing (TBM), with every mi...