Belle II Document Server 4 records found  Search took 0.00 seconds. 
1. Electroweak penguins and radiative B decays at Belle II / Cyrille Praz [BELLE2-CONF-PROC-2023-015] Proceedings of "Rencontres de Moriond EW 2023"
15 May 2023

Decays of B mesons involving the transition of a b quark into an s quark are good probes of physics beyond the standard model. [...]
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2. Measurement of the photon-energy spectrum in inclusive B-> X_s gamma decays identified using hadronic decays of the recoil B meson in 2019–2021 Belle II data / Henrikas Svidras ; Arthur Bolz ; Lu Cao ; Markus Röhrken ; et al [BELLE2-CONF-DRAFT-2022-018] [BELLE2-CONF-PH-2022-018]
20 October 2022

We measure the photon-energy spectrum in radiative bottom-meson ($B$) decays into inclusive final states involving a strange hadron and a photon. [...]
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3. Measurement of the branching fraction for the decay $B \to K^{\ast}(892)\ell^+\ell^-$ at Belle II / Seema Choudhury [BELLE2-CONF-PH-2022-009]
20 September 2022

We report a measurement of the branching fraction of $B \to K^{\ast}(892)\ell^+\ell^-$ decays, where $\ell^+\ell^- = \mu^+\mu^-$ or $e^+e^-$, using electron-positron collisions recorded at an energy at or near the $\Upsilon(4S)$ mass and corresponding to an integrated luminosity of $189$ fb$^{-1}$ [...]
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4. Measurements of the branching fractions for B→K∗γ decays at Belle II / R. Tiwary ; R. Mehta ; R. Dhamija ; S Sandilya ; et al [BELLE2-CONF-PH-2021-004]
10 October 2021

This paper reports a study of B→K∗γ decays using 62.8±0.6 fb−1 of data collected during 2019–2020 by the Belle II experiment at the SuperKEKB e+e− asymmetric-energy collider, corresponding to (68.2±0.8)×10^6 BB events. [...]
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