CP Violation and Lifetime Differences of Neutral B Mesons from   Correlated B^0-B^0bar Pairs
  We present a technique to determine the CP violating phases, as well as, the lifetime differences of the mass eigenstates for both $B_d$ and $B_s$, by considering correlated $B\bar{B}$ pairs produced at the $\Upsilon$ resonances. We do not require a detailed time dependent study, but only partial time integrated rates, with the tag time, either preceding or following the decay of the other $B$ meson to a final state f. f may be a CP eigenstate or a non-CP eigenstate. 
Nita Sinha and Rahul Sinha (Institute of Mathematical Sciences)