Measurement of the B-0-(B)over-bar(0) oscillation frequency using pi-B meson charge-flavor correlations in p(p)over-bar collisions at root s=1.8 TeV

We present a measurement of the B-0 <-> (B) over bar(0) oscillation frequency a flavor tagging method based on correlations of B meson flavor with the charge of other particles produced in <p(p)over bar> collisions at root s = 1.8 TeV. Such correlations are expected to arise from b quark hadronization and from B** decays. We partially reconstruct B mesons using the semileptonic decays B-0 --> l(+) D-(*-)X and B+ --> l(+)(D) over bar(0)X. From the oscillation frequency, we obtain the mass difference between the two B-0 mass eigenstates, Delta m(d) = 0.471(+0.068)(+0.078)(stat) +/- 0.034(syst)(h) over bar ps(-1), and measure the efficiency and purity of this flavor tagging method for both charged and neutral B mesons.