Observation of the decay ¯¯¯B0→Λ+c¯pπ0
In a sample of 467 × 10 6 B ¯¯¯ B pairs collected with the BABAR detector at the PEP-II collider at SLAC we have observed the decay ¯¯¯ B 0 → Λ + c ¯ p π 0 and measured the branching fraction to be ( 1.94 ± 0.17 ± 0.14 ± 0.50 ) × 10 − 4 , where the uncertainties are statistical, systematic, and the...
| Authors: | ; ; |
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| Format: | Article |
| Status: | Published version |
| Publication date: | 2010 |
| Country: | España |
| Institution: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repository: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/131738 |
| Online Access: | https://hdl.handle.net/2445/131738 |
| Access Level: | Open access |
| Keyword: | Física de partícules Experiments Particle physics |
| Summary: | In a sample of 467 × 10 6 B ¯¯¯ B pairs collected with the BABAR detector at the PEP-II collider at SLAC we have observed the decay ¯¯¯ B 0 → Λ + c ¯ p π 0 and measured the branching fraction to be ( 1.94 ± 0.17 ± 0.14 ± 0.50 ) × 10 − 4 , where the uncertainties are statistical, systematic, and the uncertainty on the Λ + c → p K − π + branching fraction, respectively. We determine an upper limit of 1.5 × 10 − 6 at 90% C.L. for the product branching fraction B ( ¯¯¯ B 0 → Σ + c ( 2455 ) ¯ p ) × B ( Λ + c → p K − π + ) . Furthermore, we observe an enhancement at the threshold of the invariant mass of the baryon-antibaryon pair. |
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