Neutral B Flavor Tagging for the Measurement of Mixing-induced CP Violation at Belle
H.Kakuno, K.Hara, B.C.K.Casey, K.-F.Chen, H.Hamasaki, M.Hazumi,, T.Iijima, N.Katayama, T.Okabe, Y.Sakai, K.Sumisawa, J.Suzuki, T.Tomura,, K.Ueno, C.-C.Wang, Y.Watanabe
TL;DR
This paper presents a flavor tagging algorithm used in the Belle experiment to measure CP violation, achieving an effective efficiency of approximately 28.8%, which enhances the precision of sin2phi_1 measurements.
Contribution
The paper introduces a flavor tagging method with evaluated efficiencies and wrong tag fractions, improving CP violation measurement accuracy at Belle.
Findings
Effective tagging efficiency of 28.8%
Evaluation of wrong tag fractions
Application to CP violation measurement
Abstract
We describe a flavor tagging algorithm used in measurements of the CP violation parameter sin2phi_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 %.
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