Measurement of the branching fraction of $B^{0}\to D^{*-}l^{+}\nu_{l}$ with early Belle II data

Sumitted to PubDB: 2020-06-12

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Authors	Florian Bernlochner, Lu Cao, Chaoyi Lyu, Minakshi Nayak, Abner Soffer
Date	April 15, 2020
Belle II Number	BELLE2-CONF-PH-2020-002
Abstract	We measure the branching fractions for the decays $B^{0}\to D^{-}e^{+}\nu_{e}$ and $B^{0}\to D^{-}\mu^{+}\nu_{\mu}$ using the first $8.70 \pm 0.09 fb^{-}$ of data collected by the Belle II experiment at the SuperKEKB asymmetric-energy $e^+ e^-$ collider using the decays $D^{+}\to D^0 \pi^+$ and $D^0\to K^-\pi^+$.