论文标题
Belle II早期数据中的HADRONIC $ B $衰减重建
Hadronic $B$ decay reconstruction in early Belle II data
论文作者
论文摘要
Belle II是一项实验，旨在研究数十亿美元的$τ$ -Lepton，$ b $ - 和$ c $ QUARK的衰减，在Superkekb $ b $ tecactory的非对称能量电子峰碰撞中观察到的背景低。 2019年3月，新近完成的Belle II开始运行，并收集了其第一个物理数据，迄今为止，达到10 fb $^{ - 1} $。我们报告了各种hadronic $ b $衰变的突出信号的重建，包括$ b^{ - } \ d^{（*）0}π^{ - } $，$ b^{0} \ to d^{ - } k^{ - } k^{+_ 5.15 fb $^{ - 1} $。这些结果表明，早期对探测器性能的理解水平显着。
Belle II is an experiment designed to study billions of $τ$-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 $B^{-}\to D^{(*)0}π^{-}$, $B^{0}\to D^{-}K^{+}$, and $B^{0}\to K^{+}π^{-}$ in the first data set corresponding to 5.15 fb$^{-1}$. These results show a remarkable level of early understanding of detector performance.
