标题： 早期 Belle II 数据中的强子 $B$ 衰变重建 显示英文标题

标题： Hadronic $B$ decay reconstruction in early Belle II data

摘要： Belle II is an experiment designed to study billions of $\tau$-lepton, $b$- and $c$-quark decays observed with low background in asymmetric-energy electron-positron collisions at the SuperKEKB $B$-factory. In March 2019, the newly completed Belle II started operating and collected its first physics data reaching 10 fb$^{-1}$ to date. 我们报告了从各种强子衰变中重建显著信号的结果，包括在对应于5.15 fb$^{-1}$的第一数据组中的$B$、$B^{-}\to D^{(*)0}\pi^{-}$、$B^{0}\to D^{-}K^{+}$和$B^{0}\to K^{+}\pi^{-}$。这些结果展示了对探测器性能的早期理解达到了显著水平。 显示英文摘要

摘要： Belle II is an experiment designed to study billions of $\tau$-lepton, $b$- and $c$-quark decays observed with low background in asymmetric-energy electron-positron collisions at the SuperKEKB $B$-factory. In March 2019, the newly completed Belle II started operating and collected its first physics data reaching 10 fb$^{-1}$ to date. We report the reconstruction of prominent signals from various hadronic $B$ decays including $B^{-}\to D^{(*)0}\pi^{-}$, $B^{0}\to D^{-}K^{+}$, and $B^{0}\to K^{+}\pi^{-}$ in the first data set corresponding to 5.15 fb$^{-1}$. These results show a remarkable level of early understanding of detector performance.