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A Measurement of CP Violation in B0 Meson Decays with Belle

Hiroaki Aihara
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Abstract

We present a preliminary measurement of the Standard Model CP violation parameter $\sin 2ϕ_1$ using the Belle detector. A $6.2~{\rm fb}^{-1}$ sample of events produced by the KEKB asymmetric $e^+e^-$ collider operating at the $Υ(4S)$ resonance is used. We report a preliminary result of $$\sin 2ϕ_1=0.45^{+0.43}_{-0.44}({\rm stat})^{+0.07}_{-0.09}({\rm syst}).$$

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Hiroaki Aihara. 2000-10-04. A Measurement of CP Violation in B0 Meson Decays with Belle. https://arxiv.org/abs/hep-ex/0010008

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