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| Autor principal: | |
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| Formato: | Preprint |
| Publicado: |
2026
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2601.11279 |
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| _version_ | 1866912828910206976 |
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| author | de Marino, Gaetano |
| author_facet | de Marino, Gaetano |
| contents | The Belle and Belle II experiments have collected a 1.2 ab$^{-1}$ sample of collisions at a center-of-mass energy corresponding to the $Υ(4S)$ resonance. These datasets, with low particle multiplicity and constrained initial state kinematics, are an ideal environment to search for rare electroweak penguin $B$ decays and lepton-flavor-violating $B$ decays to final states with missing energy from neutrinos. Results from $b \to sν\barν$ processes and their interpretation are presented. In addition, we provide an overview of the search for the $B \to K^{*0}τ^+τ^-$ decays and the lepton-flavor violating decays $B^0 \to K^{(*)0}τ^\pm\ell^\mp$, where $\ell$ is an electron or a muon. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_11279 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Measurements of electroweak penguin and lepton-flavor violating B decays to final states with missing energy at Belle and Belle II de Marino, Gaetano High Energy Physics - Experiment The Belle and Belle II experiments have collected a 1.2 ab$^{-1}$ sample of collisions at a center-of-mass energy corresponding to the $Υ(4S)$ resonance. These datasets, with low particle multiplicity and constrained initial state kinematics, are an ideal environment to search for rare electroweak penguin $B$ decays and lepton-flavor-violating $B$ decays to final states with missing energy from neutrinos. Results from $b \to sν\barν$ processes and their interpretation are presented. In addition, we provide an overview of the search for the $B \to K^{*0}τ^+τ^-$ decays and the lepton-flavor violating decays $B^0 \to K^{(*)0}τ^\pm\ell^\mp$, where $\ell$ is an electron or a muon. |
| title | Measurements of electroweak penguin and lepton-flavor violating B decays to final states with missing energy at Belle and Belle II |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2601.11279 |