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def definition def or abbrev

branchingRatio

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formal statement (Lean)

 103def branchingRatio (amp phaseSpace : ℝ) (channels : List (ℝ × ℝ)) : ℝ :=

proof body

Definition body.

 104  if totalWidth channels = 0 then 0
 105  else partialWidth amp phaseSpace / totalWidth channels
 106
 107/-- Branching ratios are non-negative when phase spaces are. -/

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