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Click symbol for equation muon mass energy equivalent in MeV  Numerical value  105.658 3755 MeV  Standard uncertainty    0.000 0023 MeV   Relative standard uncertainty  2.2 x 10-8  Concise form  105.658 3755(23) MeV       Click here for correlation coefficient of this constant with other constants Source: 2018 CODATA      recommended values  Definition of uncertainty       Correlation coefficient with any other constant