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def definition def or abbrev

betaQCD1L

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formal statement (Lean)

 109noncomputable def betaQCD1L (nf : ℕ) (alphaS : ℝ) : ℝ :=

proof body

Definition body.

 110  -((beta0QCDReal nf) / (2 * Real.pi)) * alphaS ^ 2
 111
 112/-- One-loop QED running with an effective charge-weight factor.
 113This keeps the kernel explicit while allowing policy-level charge sums. -/

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