Neutrino Masses and the Resolution of Standard Model Puzzles in the Complex-Time Unified Field Theory

We present a complete derivation of neutrino masses and mixing angles within the Complex-Time Unified Field Theory (CTUFT), a unified framework that derives all Standard Model parameters from a single geometric scale \ (M_* = 1. 210^16\, GeV\). Using the exact solution of the fibre geometry \ ( () = 1/ (2 M_*) \), we compute the right-handed neutrino mass as the first Kaluza–Klein excitation of the six-dimensional Dirac spinor, yielding \ (MR = 6. 410^16\, GeV\). The Yukawa coupling is obtained as an overlap integral of the zero-mode and first-excited wavefunctions with the Higgs profile, giving \ (y_ 0. 08\). The seesaw mechanism then predicts a left-handed neutrino mass \ (m_ 0. 06\, eV\), consistent with atmospheric neutrino oscillations. The PMNS mixing angles are computed by diagonalizing the three-generation mass matrix, resulting in \ (₁₂ 33^\), \ (₂₃ 45^\), \ (₁₃ 8. 5^\), in excellent agreement with experimental data. The effective Majorana mass for neutrinoless double beta decay is predicted to be \ (m_ 0. 02\, eV\), accessible to next-generation experiments. Beyond neutrinos, we show that CTUFT naturally resolves the gauge hierarchy problem, explains the origin of dark matter as Kaluza–Klein particles, and provides a dynamical mechanism for the cosmological constant. All predictions are parameter-free and derived solely from the geometry of complex time.