Journal article
Observation of the decay B s 0 → K 0 p p ¯ and measurement of the B s 0 → K 0 p p ¯ branching fractions
- Abstract:
- A study of the charmless baryonic decays Bs0→K0pp¯ is presented, where Bs0 denotes either a B0 or a Bs0 meson. The analysis is based on proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The decay Bs0→K0pp¯ is observed for the first time, with a measured branching fraction of (9.14 ± 1.69 ± 0.90 ± 0.33 ± 0.20) × 10−7 and a significance of 5.6σ. The uncertainties respectively account for statistical and systematic contributions, the precision of the branching fraction of the normalisation channel B0→ K0π+π− and the fragmentation fraction ratio fs/fd. The branching fraction determined for B0→K0pp¯ is (2.82 ± 0.08 ± 0.12 ± 0.10) × 10−6, which is the most precise measurement to date.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.1MB, Terms of use)
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- Publisher copy:
- 10.1007/jhep07(2025)121
Authors
- Publisher:
- Springer
- Journal:
- Journal of High Energy Physics More from this journal
- Volume:
- 2025
- Issue:
- 7
- Article number:
- 121
- Publication date:
- 2025-07-09
- Acceptance date:
- 2025-06-10
- DOI:
- EISSN:
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1029-8479
- ISSN:
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1126-6708
- Language:
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English
- Keywords:
- Source identifiers:
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3108478
- Deposit date:
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2025-07-11
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