Observations of Λ0b→ΛK+π− and Λ0b→ΛK+K− decays and searches for other Λ0b and Ξ0b decays to Λh+h′− final states

Abstract : A search is performed for the charmless three-body decays of the Λ0b and Ξ0b 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 3fb−1 of pp collisions, collected by the LHCb experiment. The Λ0b→ΛK+π− and Λ0b→ΛK+K− decays are observed for the first time and their branching fractions and CP asymmetry parameters are measured. Evidence is seen for the Λ0b→Λπ+π− decay and limits are set on the branching fractions of Ξ0b baryon decays to the Λh+h′− final states.
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Journal of High Energy Physics, Springer Verlag (Germany), 2016, 05, pp.081. 〈10.1007/JHEP05(2016)081〉
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http://hal.in2p3.fr/in2p3-01288895
Contributeur : Claudine Bombar <>
Soumis le : mardi 15 mars 2016 - 16:54:45
Dernière modification le : jeudi 18 janvier 2018 - 01:46:04

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R. Aaij, L. Beaucourt, M. Chefdeville, D. Decamp, N. Déléage, et al.. Observations of Λ0b→ΛK+π− and Λ0b→ΛK+K− decays and searches for other Λ0b and Ξ0b decays to Λh+h′− final states. Journal of High Energy Physics, Springer Verlag (Germany), 2016, 05, pp.081. 〈10.1007/JHEP05(2016)081〉. 〈in2p3-01288895〉

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