Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2000-08-23
Physics
High Energy Physics
High Energy Physics - Experiment
36 pages, 13 postscript figures, contributed paper to ICHEP2000
Scientific paper
B^0-anti-B^0 flavor oscillations are studied in e^+e^- annihilation data collected with the BABAR detector at center-of-mass energies near the Y(4S) resonance. One B is reconstructed in a hadronic or semileptonic decay mode, and the flavor of the other B in the event is determined with a tagging algorithm that exploits the relation between the flavor of the heavy quark and the charges of its decay products. Tagging performance is characterized by an efficiency e_i and a probability for mis-identification, w_i, for each tagging category. We report a determination of the wrong-tag probabilities, w_i, and a preliminary result for the time-dependent B^0-anti-B^0 oscillation frequency, Delta_md = 0.512+/-0.017+/-0.022 hbar-ps^{-1}.
"The BABAR Collaboration
Aubert B.
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