Hadronic B decay reconstruction in early Belle II data

Sumitted to PubDB: 2020-01-22

Category: Proceeding, Visibility: Public

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Authors	Eldar Ganiev, Niharika Rout, Benedikt Wach
Date	Jan. 22, 2020
Belle II Number	BELLE2-CONF-PROC-2020-001
Abstract	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.