B physics at LEP

The experiments at LEP now dominate the world average b hadron lifetime, and have measured individual lifetimes for the pseudo-scalar B mesons and for b baryons with precisions of 15-20%. Measurements of the average mixing parameter [χ] at LEP suggest substantial Bs mixing. Flavor oscillations have been observed directly for the Bd, and searches for Bs oscillations are underway. Some exclusive B decays have been reconstructed, and the mass of the Bs has been measured. Most analyses are statistics limited, so further improvements can be expected as the data sample increases