Measurements of electroweak penguin and lepton-flavour violating decays to final states with missing energy at Belle and BelleII
Dec 17, 20246 pages
Published in:
- PoS ICHEP2024 (2025) 418
Contribution to:
- , 418
- ICHEP2024
- Published: Dec 17, 2024
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Abstract: (SISSA)
Electroweak penguin and lepton-flavour violating decays are key focuses of the Belle II physics program. These processes are particularly challenging due to the presence of neutrinos in the final states, resulting in `missing energy' in the rare transitions. Using electron-positron collision data collected at the resonance, we present the first evidence for decay and the most stringent upper limit on decay. Additionally, combining Belle and Belle II data, we report the first search on lepton-flavour violating () decays.References(17)
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