Measurement of the branching fraction of B0→ J/ψπ0 decays
The ratio of branching fractions between B0 → J/ψπ0 and B+ → J/ψK∗+ decays is measured with proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1 . The measured value is BB0→J/ψπ0 BB+→J/ψK∗+ = (1.153 ± 0.053 ± 0.048) × 10−2 , where the frs...
| Autores: | , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/221848 |
| Acceso en línea: | https://hdl.handle.net/2445/221848 |
| Access Level: | acceso abierto |
| Palabra clave: | Hadrons Física de partícules Model estàndard (Física nuclear) Particle physics Standard model (Nuclear physics) |
| Sumario: | The ratio of branching fractions between B0 → J/ψπ0 and B+ → J/ψK∗+ decays is measured with proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1 . The measured value is BB0→J/ψπ0 BB+→J/ψK∗+ = (1.153 ± 0.053 ± 0.048) × 10−2 , where the frst uncertainty is statistical and the second is systematic. The branching fraction for B0 → J/ψπ0 decays is determined using the branching fraction of the normalisation channel, resulting in BB0→J/ψπ0 = (1.670 ± 0.077 ± 0.069 ± 0.095) × 10−5 , where the last uncertainty corresponds to that of the external input. This result is consistent with the current world average value and competitive with the most precise single measurement to date. |
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