TECHNICAL REPORT — ZENODO DEPOSIT Authors: Miguel Ángel Percudani, Jorge Iván Díaz ORCID (M.A.P.): 0009-0007-1748-3212 ══════════════════════════════════════════════════════════════════ SUMMARY ══════════════════════════════════════════════════════════════════ We validate the cosmological predictions of the UAT/UCP framework using direct observational data and the Om(z) diagnostic, without Boltzmann codes (CLASS/CAMB) or ΛCDM parameter inputs. The UAT expansion history is derived from first principles with a single free parameter (7% thermal margin). We compare against: • 31 cosmic chronometer H(z) measurements (Moresco+ 2016,2020) • 3 BOSS DR12 BAO angular distance points KEY RESULTS: • Om(z) diagnostic: UAT mean = 0.2948 ± 0.0104 (ΛCDM: constant 0.315) • H(z) fit: χ²(UAT)=20.70, χ²(ΛCDM)=14.90 (but UAT uses 1 param vs 6+) • BAO fit: χ²(UAT)=6.28, χ²(ΛCDM)=9.90 with UAT sound horizon rd=141 Mpc • Bayesian model selection: ΔAIC=-4.20, ΔBIC=-11.37, Bayes factor B≈294 → DECISIVE evidence for UAT over ΛCDM (Jeffreys scale) • Sensitivity: UAT would need χ²≥32.07 (55% worse) for neutral Bayes factor Combined with independent fσ8(z) analysis (B≈1755), two independent observables both decisively favor UAT over ΛCDM. ALL ANALYSES PERFORMED WITHOUT: ✗ CLASS / CAMB Boltzmann codes ✗ w(z) parametrisation ✗ ΛCDM parameter inputs SCRIPTS USE ONLY: ✓ Direct observables (T_CMB, η_B, H₀ from SH0ES) ✓ UAT/UCP constants (κ_crit, φ, k_early, 7% margin) ✓ Standard Python libraries (NumPy, SciPy) ══════════════════════════════════════════════════════════════════ SUPPLEMENTARY SCRIPTS ══════════════════════════════════════════════════════════════════ • UAT_Omz_Diagnostic.py — Derives all parameters from first principles, computes H(z), performs Om(z) diagnostic, compares with chronometers & BAO • UAT_Bayesian_Chronometers.py — AIC/BIC/Bayes factor analysis & sensitivity ══════════════════════════════════════════════════════════════════ REFERENCES ══════════════════════════════════════════════════════════════════ UAT Framework: DOI: 10.5281/zenodo.17486599 UCP Framework: DOI: 10.5281/zenodo.18210808 UCP Hubble Tension: DOI: 10.5281/zenodo.17718670 UAT Lagrangian: DOI: 10.5281/zenodo.20500431 Λ Resolution: DOI: 10.5281/zenodo.21109424 Ω_m Relation: DOI: 10.5281/zenodo.21328187 7% Thermal Margin: DOI: 10.5281/zenodo.21211964 Unified Action: DOI: 10.5281/zenodo.21433360 QCD Confinement: DOI: 10.5281/zenodo.21462798 Causal Mass Gap: DOI: 10.5281/zenodo.21403903 Antifrequency: DOI: 10.5281/zenodo.18809178 UAT/UCP Universe: DOI: 10.5281/zenodo.21369808 ══════════════════════════════════════════════════════════════════ LICENSE ══════════════════════════════════════════════════════════════════ Creative Commons Attribution 4.0 International (CC BY 4.0)