A search for CP($T$) violation in $B$ decays at OPAL

A search for CP(T) violation is performed and the fractional difference between the $b$ and $\bar b$ hadron lifetimes is measured using reconstructed secondary vertices in inclusive B hadron decays culled from 3.1 million $Z^0 \to q \bar q$ events. The data were collected by the OPAL experiment at the LEP collider at CERN at $\sqrt{s} \approx 91$ GeV from 1991-1995.