Precision measurements of weak interaction parameters at Belle and Belle II
Fuente:
arXiv
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| Autore principale: | |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Accesso online: | |
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| _version_ | 1866910900368179200 |
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| author | Johnson, Ansu |
| author_facet | Johnson, Ansu |
| contents | We report on $CP$ violation measurements at Belle and Belle II, focusing on improving the precision of observables sensitive to the Cabbibo-Kobayashi-Maskawa matrix parameters. We present recent measurements of the CKM unitarity angle $ϕ_2 (α)$ using the $B \to π^0 π^0$ and $B^0 \to ρ^+ ρ^-$ decay channels, along with the first combined $ϕ_3 (γ)$ measurement from Belle and Belle II. Additionally, we discuss the latest determinations of the CKM matrix elements $|V_{cb}|$ and $|V_{ub}|$ through exclusive decay modes $B \to D^{(*)} \ell ν_\ell$ and $B \to π\ell ν_\ell$, respectively. These results demonstrate improved precision and remain consistent with Standard Model predictions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_00354 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Precision measurements of weak interaction parameters at Belle and Belle II Johnson, Ansu High Energy Physics - Experiment We report on $CP$ violation measurements at Belle and Belle II, focusing on improving the precision of observables sensitive to the Cabbibo-Kobayashi-Maskawa matrix parameters. We present recent measurements of the CKM unitarity angle $ϕ_2 (α)$ using the $B \to π^0 π^0$ and $B^0 \to ρ^+ ρ^-$ decay channels, along with the first combined $ϕ_3 (γ)$ measurement from Belle and Belle II. Additionally, we discuss the latest determinations of the CKM matrix elements $|V_{cb}|$ and $|V_{ub}|$ through exclusive decay modes $B \to D^{(*)} \ell ν_\ell$ and $B \to π\ell ν_\ell$, respectively. These results demonstrate improved precision and remain consistent with Standard Model predictions. |
| title | Precision measurements of weak interaction parameters at Belle and Belle II |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2504.00354 |