The $q^2$ moments in inclusive semileptonic $B$ decays
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arXiv
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| Format: | Preprint |
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2023
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| _version_ | 1866916123053654016 |
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| author | Finauri, Gael Gambino, Paolo |
| author_facet | Finauri, Gael Gambino, Paolo |
| contents | We compute the first moments of the $q^2$ distribution in inclusive semileptonic $B$ decays as functions of the lower cut on $q^2$, confirming a number of results given in the literature and adding the $O(α_s^2β_0)$ BLM contributions. We then include the $q^2$-moments recently measured by Belle and Belle II in a global fit to the moments. The new data are compatible with the other measurements and slightly decrease the uncertainty on the nonperturbative parameters and on $|V_{cb}|$. Our updated value is $|V_{cb}|=(41.97\pm 0.48)\times 10^{-3}$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2310_20324 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | The $q^2$ moments in inclusive semileptonic $B$ decays Finauri, Gael Gambino, Paolo High Energy Physics - Phenomenology High Energy Physics - Experiment We compute the first moments of the $q^2$ distribution in inclusive semileptonic $B$ decays as functions of the lower cut on $q^2$, confirming a number of results given in the literature and adding the $O(α_s^2β_0)$ BLM contributions. We then include the $q^2$-moments recently measured by Belle and Belle II in a global fit to the moments. The new data are compatible with the other measurements and slightly decrease the uncertainty on the nonperturbative parameters and on $|V_{cb}|$. Our updated value is $|V_{cb}|=(41.97\pm 0.48)\times 10^{-3}$. |
| title | The $q^2$ moments in inclusive semileptonic $B$ decays |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2310.20324 |