Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
1997-12-04
Phys.Rev.Lett.80:2057-2062,1998
Physics
High Energy Physics
High Energy Physics - Experiment
16 pages, 2 figures. Submitted to Physical Review Letters. Also available at http://www-cdf.fnal.gov/physics/pub97/cdf4244_l
Scientific paper
10.1103/PhysRevLett.80.2057
We present a measurement of the B0 B0-bar oscillation frequency using a flavor tagging method based on correlations of B meson flavor with the charge of other particles produced in p p-bar collisions at sqrt{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 B0 -> lepton D(*)- X. and B+ -> lepton D0-bar X$. From the oscillation frequency, we obtain the mass difference between the two B0 mass eigenstates, Delta m_d = 0.471 {+0.078} {-0.068}(stat) +- 0.034 (syst) hbar ps-1, and measure the efficiency and purity of this flavor tagging method for both charged and neutral B mesons.
al Abe F. et.
CDF Collaboration
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