Belle II Document Server 6 records found  Search took 0.04 seconds. 
1. Lepton universality tests and searches for new physics in charged current decays at Belle II / Henrik Junkerkalefeld [BELLE2-CONF-PROC-2023-049]
29 December 2023

We present recent tests of lepton universality as crucial probes of the Standard Model in semileptonic $B$-meson decays at Belle II. [...]
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2. LFU tests and searches for new physics in charged current decays at Belle II / Henrik Junkerkalefeld [BELLE2-TALK-DRAFT-2023-180] [BELLE2-TALK-CONF-2023-179]
28 November 2023
/ 16th International Conference on Heavy Quarks and Leptons
In this talk, recent results concerning lepton universality are presented. [...]
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3. Semileptonic $B$-meson decays including $b \rightarrow c$ anomalies at Belle II / Henrik Junkerkalefeld [BELLE2-CONF-PROC-2023-014]
15 May 2023

We present recent measurements of semileptonic $B$-meson decays using a data sample collected at the $\Upsilon(4S)$ resonance by the Belle~II experiment corresponding to an integrated luminosity of $189\,\mathrm{fb}^{-1}$. [...]
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4. Semileptonic B decays at at Belle II including b→c anomalies / Henrik Junkerkalefeld [BELLE2-TALK-DRAFT-2023-042] [BELLE2-TALK-CONF-2023-039]
25 April 2023
/ Rencontres de Moriond - QCD & High Energy Interactions
Semileptonic B decays at at Belle II including b→c anomalies
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5. A measurement of the ratio of light-lepton inclusive semileptonic $B$ decay rates $R(X_{e/\mu})$ = $\mathcal{B}(B\to X e \nu)$ / $\mathcal{B}(B\to X \mu \nu)$ using $189\,\mathrm{fb}^{-1}$ of data at Belle~II / Henrik Junkerkalefeld [BELLE2-CONF-PROC-2023-006]
16 December 2022

In this work a measurement of the ratio of branching fractions of inclusive semileptonic $B$ meson decays, $R(X_{e/\mu})=\mathcal{B}(B\to X e \nu)/\mathcal{B}(B\to X \mu \nu)$ is reported as a probe of $e-\mu$ universality [...]
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6. Recent Belle II results on semitauonic decays and tests of lepton-flavor universality / Henrik Junkerkalefeld [BELLE2-TALK-DRAFT-2022-109] [BELLE2-TALK-CONF-2022-075]
06 July 2022
/ ICHEP 2022
The rate of semitauonic 𝐵 decays has been consistently above theory expectations since these decays were first measured. [...]
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