Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2023
|
| Schlagworte: | |
| Online-Zugang: | https://arxiv.org/abs/2305.10746 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866913367433674752 |
|---|---|
| author | Junkerkalefeld, Henrik |
| author_facet | Junkerkalefeld, Henrik |
| contents | We present recent measurements of semileptonic $B$-meson decays using a data sample collected at the $Υ(4S)$ resonance by the Belle II experiment corresponding to an integrated luminosity of $189\,\mathrm{fb}^{-1}$. We determine the CKM-matrix elements $|V_\mathrm{cb}|$ using untagged $B^0 \to D^{*-} \, \ell^{+} \, ν_\ell$ decays and $|V_\mathrm{ub}|$ using untagged $B^0 \to π^- \, \ell^+ \, ν_\ell$ decays. We test light lepton universality in two new analyses using hadronically tagged events. We report the first measurement of a complete set of five different angular distributions using $B^0 \to D^{*-} \, \ell^{+} \, ν_\ell$ decays and we measure the branching fraction ratio of inclusive $B \to X \, e \, \barν_e$ and $B \to X \, μ\, \barν_μ$ decays. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_10746 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Semileptonic $B$-meson decays including $b \rightarrow c$ anomalies at Belle II Junkerkalefeld, Henrik High Energy Physics - Experiment We present recent measurements of semileptonic $B$-meson decays using a data sample collected at the $Υ(4S)$ resonance by the Belle II experiment corresponding to an integrated luminosity of $189\,\mathrm{fb}^{-1}$. We determine the CKM-matrix elements $|V_\mathrm{cb}|$ using untagged $B^0 \to D^{*-} \, \ell^{+} \, ν_\ell$ decays and $|V_\mathrm{ub}|$ using untagged $B^0 \to π^- \, \ell^+ \, ν_\ell$ decays. We test light lepton universality in two new analyses using hadronically tagged events. We report the first measurement of a complete set of five different angular distributions using $B^0 \to D^{*-} \, \ell^{+} \, ν_\ell$ decays and we measure the branching fraction ratio of inclusive $B \to X \, e \, \barν_e$ and $B \to X \, μ\, \barν_μ$ decays. |
| title | Semileptonic $B$-meson decays including $b \rightarrow c$ anomalies at Belle II |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2305.10746 |