$\vert \Delta {\boldsymbol \tau}_{{{\boldsymbol b}}}\vert /{\boldsymbol \tau}_{\mathrm {{{\boldsymbol b}},{{\overline{\boldsymbol b}}}}}$ INSPIRE search

${\mathit \tau}_{\mathrm {{{\mathit b}},{{\overline{\mathit b}}}}}$ and $\vert \Delta {\mathit \tau}_{{{\mathit b}}}\vert$ are the mean life average and difference between ${{\mathit b}}$ and ${{\overline{\mathit b}}}$ hadrons.
VALUE DOCUMENT ID TECN  COMMENT
$-0.001$ $\pm0.012$ $\pm0.008$ 1
 1999 J
OPAL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$
1  Data analyzed using both the jet charge and the charge of secondary vertex in the opposite hemisphere.
References:
 ABBIENDI 1999J
EPJ C12 609 Measurement of the ${{\mathit B}^{+}}$ and ${{\mathit B}^{0}}$ Lifetimes and Search for $\mathit CP(T)$ Violation using Reconstructed Secondary Vertices