Bifold Quantum Gravity Applications: Neutrino Physics

This paper is a follow-up application of the Bifold quantum gravity framework. Starting from the dual-SU(2) structure, C_± dynamics, and C_± matrix geometry of Ref. [1], we systematically derive neutrino masses, mass ordering, mixing angles, the CP phase, the Majorana nature, short-baseline anomalies, and six quantitative predictions. The three neutrino masses are m_1≈0.023 eV, m_2/m_1=1.017, m_3/m_1=√2, with the ratio 1:1.017:√2 close to experiment; the mass ordering is m_1<m_2<m_3. The three mixing angles are θ₁₃=7.5^∘, θ₁₂=32.0^∘, θ₂₃=51.2^∘. The neutrino CP phase is δ=-90^∘, consistent with the negative-phase preference of T2K 2026 [9]. Neutrinos are Majorana particles, lepton number is violated, the 0νββ half-life is ~10⁴⁰ yr, and the process is invisible to current experiments. The short-baseline anomaly gives δ P/P~1%, not inconsistent with the ~0.1%–1% level corresponding to the LSND/MiniBooNE anomaly. Six quantitative predictions are: an extra transition amplitude from the inter-sector compactness difference, ε_θ≈1.7%; decoherence Γ∝ E⁻¹ (n=-1, not covered by IceCube); a matter-penetration probability correction 2ε_θ≈+3.4%; LIV η~ E^2/M_P^2 (100 TeV crossing); magnetic moment μ_ν~10⁻¹⁹μ_B (compact correction 10⁻³³μ_B negligible); and leptogenesis η_B~4.7×10⁻¹⁰.