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alpha particle mass energy equivalent in MeV  Numerical value  3727.379 4118 MeV  Standard uncertainty     0.000 0012 MeV   Relative standard uncertainty  3.1 x 10-10  Concise form  3727.379 4118(12) MeV       Click here for correlation coefficient of this constant with other constants Source: 2022 CODATA      recommended values  Definition of uncertainty       Correlation coefficient with any other constant