Neutral B flavor tagging for the measurement of mixing-induced CP violation at Belle

We describe a flavor tagging algorithm used in measurements of the CP violation parameter sin 2phi(1) at the Belle experiment. Efficiencies and wrong tag fractions are evaluated using flavor-specific B meson decays into hadronic and semileptonic modes. We achieve a total effective efficiency of 28.8 +/- 0.6%. (C) 2004 Elsevier B.V. All rights reserved.