Predictions of the absolute neutrino mass scale and the effective Majorana mass mββ in the GTWSSF–USC–GTCW formalism Technical Annex A16

Abstract Technical Annex A16 (dated 10 March 2026) presents the complete, reproducible and sharply falsifiable predictions of the absolute neutrino mass scale and the effective Majorana mass mββ m_{\beta\beta} mββ within the Global Theory of Shared Couplings of Fundamental Structures (GTSFC–USC–GTCW). Employing the frozen Operator A10 — defined solely in terms of immutable Universal Structural Code (USC) constants and a single experimental oscillation anchor Δm322 \Delta m_{32}^2 Δm322 — the framework yields a parameter-free prediction for the heaviest neutrino mass eigenstate: m^ν3=0.0472±0.0071 eV. \hat{m}_{\nu_3} = 0.0472 \pm 0.0071\,\text{eV}. m^ν3=0.0472±0.0071eV. In the preferred E-A closure (rank-2 mass matrix with the condition det⁡Mν=0 \det M_\nu = 0 detMν=0), full Monte-Carlo propagation (300 000 trials) of the latest oscillation priors (T2K + NOvA + JUNO 2025) gives: Σmν=0.05871±0.00041 eV, \Sigma m_\nu = 0.05871 \pm 0.00041\,\text{eV}, Σmν=0.05871±0.00041eV, with the kinematic effective mass mβ=0.00883±0.00002 eV m_\beta = 0.00883 \pm 0.00002\,\text{eV} mβ=0.00883±0.00002eV. A dedicated 100 000-trial Monte-Carlo simulation of Majorana phases (using JUNO 2025 mixing parameters) establishes the range mββ∈[1.50,3.74] meV m_{\beta\beta} \in [1.50, 3.74]\,\text{meV} mββ∈[1.50,3.74]meV (bimodal distribution; median 2.86 meV; 68 % CL interval [1.725, 3.640] meV). These results simultaneously satisfy the kinematic lower bound from neutrino oscillations (Σmν≥0.05005 eV \Sigma m_\nu \ge 0.05005\,\text{eV} Σmν≥0.05005eV) and lie comfortably within the most stringent cosmological upper limit from DESI DR2 (Σmν