The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
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muon magnetic moment
 $\mu_{\rm \mu}$
 Numerical value  -4.490 448 30 x 10-26 J T-1
 Standard uncertainty   0.000 000 10 x 10-26 J T-1
  Relative standard uncertainty  2.2 x 10-8
 Concise form  -4.490 448 30(10) x 10-26 J T-1    
 
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

 
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