The baryon asymmetry problem asks why the universe contains matter rather than equal matter + antimatter that would annihilate. ΛCDM cannot explain the asymmetry from first principles; the Big Bang should produce equal baryons and antibaryons under SM symmetries (Sakharov 1967; Cohen 1993). Sakharov outlines requirements (CP violation + baryon-number violation + out-of-equilibrium conditions), but ΛCDM lacks a parsimonious mechanism without invoking undiscovered particles or fine-tuned parameters.
The standard model with hot Big Bang requires Sakharov conditions to be satisfied during the early universe by SM-only physics. The CKM CP violation magnitude δ_CKM ~ 10⁻²⁰ falls 18 orders short of producing the observed η_B ≈ 6 × 10⁻¹⁰. Closing the gap demands beyond-SM physics, none of which has experimental confirmation.
SCT replaces the hot-dense-center with a superluminal collision and the thermalized debris field. From this single change, baryon asymmetry comes from geometric CP violation from cascade angular momentum, requiring NO beyond-Standard-Model physics. The cascade J = μ(b × v_rel) vector inherent in any non-head-on collision provides a geometric CP-violating term of magnitude δ_CP,eff ≈ 10⁻² to 10⁻³ (P41).
That is geometric amplification of standard-model CP violation by nearly 18 orders of magnitude through the cascade impact-parameter geometry, sufficient to produce η_B ≈ 6 × 10⁻¹⁰. The non-equilibrium cascade shock environment (P22, P23) enhances sphaleron processes (which provide baryon-number violation) far above their equilibrium rate. Combined with the cascade J's geometric CP violation plus the inherently out-of-equilibrium cascade thermalization, all three Sakharov conditions are satisfied using only Standard Model physics enhanced by the extreme non-equilibrium cascade environment.
The cascade therefore produces the observed baryon asymmetry as a natural geometric outcome rather than as a fine-tuned beyond-SM mechanism. The M8 mechanism uses only standard particle physics; the new ingredient is the cascade-deposited geometric J vector that amplifies CKM CP violation by the factor needed to match observation. Pre-existing matter (P25, P28) supplies the matter substrate that gets baryogenetically processed during the cascade. The same M8 framework that resolves the baryogenesis-mechanism question (recid 173) and the broader baryon-asymmetry phenomenology applies here equally.
If precision laboratory CP-violation measurements demonstrate baryogenesis cannot proceed via geometric J-vector amplification of CKM CP violation at the required 18-order amplification level (no enhanced sphaleron rate from cascade non-equilibrium plasma, no geometric CP signature in laboratory experiments), the M8 geometric-baryogenesis explanation is refuted. The signature SCT prediction is η_B = 6 × 10⁻¹⁰ from cascade-J amplification without beyond-SM physics.