Measurement of the branching fraction of $B^{0} \to D^{* -} l^{+} ν_{l}$ 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	2020-04-15
Belle II Number	BELLE2-CONF-PH-2020-002
Abstract	We measure the branching fractions for the decays $B^{0} \to D^{* -} e^{+} ν_{e}$ and $B^{* 0} \to D^{* -} μ^{+} ν_{μ}$ using the first $8.70 \pm 0.09 f b^{-}$ of data collected by the Belle II experiment at the SuperKEKB asymmetric-energy $e^{+} e^{-}$ collider using the decays $D^{* +} \to D^{0} π^{+}$ and $D^{0} \to K^{-} π^{+}$ .

Measurement of the branching fraction of B0→D∗−l+νl with early Belle II data