# ${\boldsymbol \tau}_{{{\boldsymbol \mu}^{+}}}/{\boldsymbol \tau}_{{{\boldsymbol \mu}^{-}}}$ MEAN LIFE RATIO INSPIRE search

A test of $\mathit CPT$ invariance.
VALUE DOCUMENT ID TECN  COMMENT
$1.000024$ $\pm0.000078$
 1984
CNTR
• • • We do not use the following data for averages, fits, limits, etc. • • •
$1.0008$ $\pm0.0010$
 1979
CNTR Storage ring
$1.000$ $\pm0.001$
 1963
CNTR Mean life ${{\mathit \mu}^{+}}$/ ${{\mathit \mu}^{-}}$
References:
 BARDIN 1984
PL 137B 135 A New Measurement of the Positive Muon Lifetime
 BAILEY 1979
NP B150 1 Final Report on the CERN Muon Storage Ring Including the Anomalous Magnetic Moment and the Electric Dipole Moment of the Muon, and a Direct Test of Relativistic Time Dilation
 MEYER 1963
PR 132 2693 Precision Lifetime Measurements on Positive and Negative Muons