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theorem proved term proof

m_c_at_MZ_pos

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formal statement (Lean)

  58theorem m_c_at_MZ_pos : 0 < m_c_at_MZ_GeV := by unfold m_c_at_MZ_GeV; norm_num

proof body

Term-mode proof.

  59
  60/-! ## Run from M_Z to m_c
  61
  62The RS prediction at the m_c scale is obtained by two-loop mass running from
  63M_Z down to m_c, using `mass_ratio_two_loop`. We expose the running engine
  64here; a final-row scorecard then compares to PDG. -/
  65
  66/-- The two-loop running prediction of m_c at its own scale, given input
  67    alpha_s values at M_Z and at m_c. -/

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