Measurement of the CKM Angle \(\phi _{3}\) Using \(B\rightarrow DK\) at Belle II
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Abstract
We present the preliminary Monte Carlo (MC) study of the \(B^{\pm } \rightarrow D ^{0}K^{\pm }\), \(D^{0} \rightarrow K _{S }^{0}\pi ^{+}\pi ^{-}\) decays to extract \( \phi _{3} \) at the Belle II along. We discuss here the improvement in \( \phi _{3} \) measurement one may expect at Belle II with 50 ab\( ^{-1} \). We also present preliminary reconstruction of the \( K_{S}^{0}\) and \( D^{0} \rightarrow K_{S}^{0}\pi ^{+}\pi ^{-} \) using the Phase II data and compared with MC.
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