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$({\mathit \tau}_{{{\mathit \tau}^{+}}}{\mathit \tau}_{{{\mathit \tau}^{-}}})/{\mathit \tau}_{\mathrm {average}}$
$({\boldsymbol \tau}_{{{\boldsymbol \tau}^{+}}}{\boldsymbol \tau}_{{{\boldsymbol \tau}^{-}}})/{\boldsymbol \tau}_{\mathrm {average}}$
INSPIRE search
Test of $\mathit CPT$ invariance.
VALUE
CL%
DOCUMENT ID
TECN
COMMENT
$\bf{<7.0 \times 10^{-3}}$
90
1
BELOUS
2014
BELL
711 fb${}^{-1}{\it{}E}^{\it{}ee}_{\rm{}cm}$ = 10.6 GeV
1
BELOUS 2014
quote limit on the absolute value of the relative lifetime difference.
References:
BELOUS
2014
PRL 112 031801
Measurement of the ${{\mathit \tau}}$-lepton Lifetime at Belle