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YukawaNormalizationHypothesis
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IndisputableMonolith.StandardModel.HiggsYukawaBridge on GitHub at line 137.
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134 `HiggsEFTBridge.NormalizationHypothesis`. It states that the Yukawa
135 coupling extracted from `m_f` and `v` via `y_f = √2 m_f / v` is the
136 same as the Yukawa appearing in the SM Lagrangian. -/
137def YukawaNormalizationHypothesis
138 (sector : Anchor.Sector) (rung Z : ℤ) (v y_SM : ℝ) : Prop :=
139 yukawa_SM sector rung Z v = y_SM
140
141/-- Under the normalisation hypothesis, the SM-extracted Yukawa is positive. -/
142theorem yukawa_SM_pos_of_hypothesis
143 (sector : Anchor.Sector) (rung Z : ℤ) (v y_SM : ℝ) (hv : 0 < v)
144 (hY : YukawaNormalizationHypothesis sector rung Z v y_SM) :
145 0 < y_SM := by
146 unfold YukawaNormalizationHypothesis at hY
147 have h := yukawa_SM_pos sector rung Z v hv
148 rw [← hY]; exact h
149
150/-! ## §4. Master Bridge Certificate -/
151
152/-- Master certificate for the Higgs–Yukawa bridge. -/
153structure HiggsYukawaBridgeCert where
154 /-- THEOREM: every Yukawa is positive for `v > 0`. -/
155 yukawa_pos : ∀ s r Z v, 0 < v → 0 < yukawa_SM s r Z v
156 /-- THEOREM: adjacent-rung scaling by `φ`. -/
157 yukawa_phi_step : ∀ s r Z v, 0 < v →
158 yukawa_SM s (r + 1) Z v = phi * yukawa_SM s r Z v
159 /-- THEOREM: integer-rung scaling by `φ^n`. -/
160 yukawa_phi_pow : ∀ s r Z (n : ℕ) v, 0 < v →
161 yukawa_SM s (r + (n : ℤ)) Z v = phi ^ n * yukawa_SM s r Z v
162 /-- THEOREM: ratio of Yukawas equals ratio of masses. -/
163 yukawa_ratio_v_independent :
164 ∀ s r1 r2 Z v, 0 < v →
165 yukawa_SM s r1 Z v / yukawa_SM s r2 Z v
166 = predict_mass s r1 Z / predict_mass s r2 Z
167