A. Vinokurova

Determination of $|V_{cb}|$ using $B\to D\ellν_\ell$ Decays at Belle II

I. Adachi, K. Adamczyk, L. Aggarwal, H. Ahmed et autres

We present a determination of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$ from the decay $B\to D\ellν_\ell$ using a $365~\mathrm{fb}^{-1}$$e^+e^-\toΥ(4S)\to B\bar B$ data sample recorded by the Belle II experiment at the SuperKEKB collider. The semileptonic decay of one $B$ meson is reconstructed in …

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Search for Rare $b \to d\ell^+\ell^-$ Transitions at Belle

L. Aggarwal, S. Al Said, H. Atmacan, V. Aushev et autres

We present the results of a search for the $b → dℓ^+ℓ^-$ flavor-changing neutral-current rare decays $B^{+,0} → (η,ω,π^{+,0},ρ^{+,0})e^+e^-$ and $B^{+,0} → (η,ω,π^0,ρ^+)μ^+μ^-$ using a 711 fb$^{-1}$ data sample that contains 772×10$^6$ $B\bar{B}$ events. The data were collected at the $ϒ$(4S) resonance …

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Measurement of $B \to K{}^{*}(892)\gamma$ decays at Belle II

T. Aushev, A. Baur, A. Bobrov, A. Bondar et autres

We present measurements of $B \to K{}^{*}(892)\gamma$ decays using $365\,{\rm fb}^{-1}$ of data collected from 2019 to 2022 by the Belle~II experiment at the SuperKEKB asymmetric-energy $e^+e^-$ collider. The data sample contains $(387 \pm 6) \times 10^6$$B\overline{B}$ events. We measure branching fractions …

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Measurement of $\mathcal{R}(D)$ and $\mathcal{R}(D^{\ast})$ with a semileptonic tagging method

A. Abdesselam, I. Adachi, K. Adamczyk, J.K. Ahn et autres

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