Observations of Λb0 → ΛK+π− and Λb0 → ΛK+ K− decays and searches for other Λb0 and Ξb0 decays to Λh+ h′− final states

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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
Other authors:	Universitat de Barcelona
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.
Subject(s):	-Barions -Col·lisions (Física) -Baryons -Collisions (Physics)
Rights:	cc-by (c) Garrido Beltrán, Lluís et al., 2016 http://creativecommons.org/licenses/by/3.0/es
Document type:	Article Article - Published version
Published by:	Springer Verlag
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