Search for the Λ 0b → Λη ′ and Λ 0b → Λη decays with the LHCb detector
A search is performed for the as yet unobserved baryonic Λ 0b → Λη ′ and Λ 0b → Λη decays with 3 fb−1 of proton-proton collision data recorded by the LHCb experiment. The B0 → K 0s η ′ decay is used as a normalisation channel. No significant signal is observed for the Λ 0b → Λη ′ decay. An upper...
| Authors: | , , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2015 |
| 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:20.500.14342/3136 |
| Online Access: | http://hdl.handle.net/20.500.14342/3136 https://doi.org/10.1007/JHEP09(2015)006 |
| Access Level: | Open access |
| Keyword: | Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) Protons Col·lisions (Física nuclear) 539 |
| Summary: | A search is performed for the as yet unobserved baryonic Λ 0b → Λη ′ and Λ 0b → Λη decays with 3 fb−1 of proton-proton collision data recorded by the LHCb experiment. The B0 → K 0s η ′ decay is used as a normalisation channel. No significant signal is observed for the Λ 0b → Λη ′ decay. An upper limit is found on the branching fraction of B(Λ0b→Λη′) < 3.1 × 10−6 at 90% confidence level. Evidence is seen for the presence of the Λ 0b → Λη decay at the level of 3σ significance, with a branching fraction B(Λ0b→Λη)=(9.3+7.3−5.3)×10−6. |
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