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http://hdl.handle.net/2445/185732
Title: | Search for the Λ b 0 → Λη ′ and Λ b 0 → Λη decays with the LHCb detector |
Author: | Baladov, A. Casanova Mohr, R. Garrido Beltrán, Lluís Gascon, D. Graciani Diaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, E. Rives Molina, V. Ruiz, Hugo LHCb Collaboration |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | 1-Sep-2015 |
Publisher: | Springer Verlag |
Abstract: | : A search is performed for the as yet unobserved baryonic Λ0 b → Λη 0 and Λ 0 b → Λη decays with 3 fb−1 of proton-proton collision data recorded by the LHCb experiment. The B0 → K0 sη 0 decay is used as a normalisation channel. No significant signal is observed for the Λ0 b → Λη 0 decay. An upper limit is found on the branching fraction of B(Λ0 b → Λη 0 ) < 3.1 × 10−6 at 90% confidence level. Evidence is seen for the presence of the Λ0 b → Λη decay at the level of 3σ significance, with a branching fraction B(Λ0 b → Λη) = (9.3 +7.3 −5.3 ) × 10−6 . |
Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP09(2015)006 |
It is part of: | Journal of High Energy Physics, 2015, vol. 2021, p. 1-21 |
URI: | http://hdl.handle.net/2445/185732 |
Related resource: | https://doi.org/10.1007/JHEP09(2015)006 |
ISSN: | 1126-6708 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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