PoS - Proceedings of Science
Volume 367 - XXIX International Symposium on Lepton Photon Interactions at High Energies (LeptonPhoton2019) - Posters
Semileptonic B decay results from early Belle II data
A. Fodor* and  On behalf of the BELLE II collaboration
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Pre-published on: November 01, 2019
Published on: December 17, 2019
The Belle II experiment at the SuperKEKB energy-asymmetric $e^+ e^-$ collider is a substantial upgrade of the B factory facility, Belle, at the Japanese KEK laboratory. The main operation of SuperKEKB has started in March 2019, and collisions ran until July 2019, achieving a peak luminosity of $5.5\times 10^{33}$ cm$^{-2}$s$^{-1}$. The results presented here were obtained from a subset of collected data of 0.41~fb$^{-1}$. In the poster presented at the conference the first results from studying semileptonic $\textit{B}$-meson decays were shown. The performance of the Full Event Interpretation (FEI) tagging was analysed. The $B^0 \rightarrow D^{*-} \ell^+ \nu_{\ell}$ mode was rediscovered, using the untagged approach.
DOI: https://doi.org/10.22323/1.367.0141
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