BELLE2-CONF-PH-2020-002

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

Minakshi Nayak ; Abner Soffer ; Florian Bernlochner ; Lu Cao ; Chaoyi Lyu

15 April 2020

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 $D^0\to K^-\pi^+$.

Keyword(s): Semileptonic ; B-meson ; first branching-fraction measurement with Belle II

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 Record created 2020-04-15, last modified 2020-04-15


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