Form factors for semileptonic B(s) -> D*(s) l nu_l decays
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866929644983287808 |
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| author | Boushmelev, Anastasia Black, Matthew Witzel, Oliver |
| author_facet | Boushmelev, Anastasia Black, Matthew Witzel, Oliver |
| contents | Semileptonic $B_{(s)}$ decays are of great phenomenological interest because they allow to extract CKM matrix elements or test lepton flavour universality. Taking advantage of existing data, we explore extracting form factors for vector final states using the narrow width approximation. Based on RBC/UKQCD's set of 2+1 flavour gauge field ensembles with Shamir domain-wall fermion and Iwasaki gauge field action, we study semileptonic $B_{(s)}$ decays using domain-wall fermions for light, strange and charm quarks, whereas bottom quarks are simulated with the relativistic heavy quark (RHQ) action. Exploratory results for $B_s \to D_s^* \ell ν_\ell$ are presented. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2412_17406 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Form factors for semileptonic B(s) -> D*(s) l nu_l decays Boushmelev, Anastasia Black, Matthew Witzel, Oliver High Energy Physics - Lattice High Energy Physics - Phenomenology Semileptonic $B_{(s)}$ decays are of great phenomenological interest because they allow to extract CKM matrix elements or test lepton flavour universality. Taking advantage of existing data, we explore extracting form factors for vector final states using the narrow width approximation. Based on RBC/UKQCD's set of 2+1 flavour gauge field ensembles with Shamir domain-wall fermion and Iwasaki gauge field action, we study semileptonic $B_{(s)}$ decays using domain-wall fermions for light, strange and charm quarks, whereas bottom quarks are simulated with the relativistic heavy quark (RHQ) action. Exploratory results for $B_s \to D_s^* \ell ν_\ell$ are presented. |
| title | Form factors for semileptonic B(s) -> D*(s) l nu_l decays |
| topic | High Energy Physics - Lattice High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2412.17406 |