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def definition def or abbrev

mW

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formal statement (Lean)

  56def mW (g v : ℝ) : ℝ := Real.sqrt (mW_sq g v)

proof body

Definition body.

  57
  58/-- Z boson mass: `m_Z = √(g² + g'²) · v / 2` (for `g, g', v > 0`). -/

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