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Title: Observations of Λb0 → ΛK+π− and Λb0 → ΛK+ K− decays and searches for other Λb0 and Ξb0 decays to Λh+ h′− final states
Author: Garrido Beltrán, Lluís
Gascón Fora, David
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Marín Benito, Carla
Picatoste Olloqui, Eduardo
Rives Molina, Vicente José
Calvo Gómez, Míriam
LHCb Collaboration
Keywords: Barions
Col·lisions (Física)
Collisions (Physics)
Issue Date: May-2016
Publisher: Springer Verlag
Abstract: A search is performed for the charmless three-body decays of the Λ b 0 and Ξ b 0 baryons to the final states Λh + h′−, where h (′) = π or K. The analysis is based on a data sample, corresponding to an integrated luminosity of 3 fb−1 of pp collisions, collected by the LHCb experiment. The Λ b 0  → ΛK +π− and Λ b 0  → ΛK + K − decays are observed for the first time and their branching fractions and CP asymmetry parameters are measured. Evidence is seen for the Λ b 0  → Λπ+π− decay and limits are set on the branching fractions of Ξ b 0 baryon decays to the Λh + h′− final states.
Note: Reproducció del document publicat a:
It is part of: Journal of High Energy Physics, 2016, vol. 2016, num. 81
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ISSN: 1126-6708
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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