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Title: Measurement of branching fractions of charmless four-body Λb 0 and Ξb 0 decays
Author: Alfonso Albero, Alejandro
Calvo Gómez, Míriam
Camboni, Alessandro
Coquereau, Samuel
Garrido Beltrán, Lluís
Gascón Fora, David
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Marin Benito, Carla
LHCb Collaboration
Keywords: Hadrons
Gran Col·lisionador d'Hadrons
Física de partícules
Large Hadron Collider (France and Switzerland)
Particle physics
Issue Date: 2018
Publisher: Springer Verlag
Abstract: A search for charmless four-body decays of Λ 0 b and Ξ0 b baryons with a proton and three charged mesons (either kaons or pions) in the final state is performed. The data sample used was recorded in 2011 and 2012 with the LHCb experiment and corresponds to an integrated luminosity of 3 fb−1 . Six decay modes are observed, among which Λ 0 b → pK−π +π −, Λ 0 b → pK−K+K−, Ξ0 b → pK−π +π − and Ξ0 b → pK−π +K− are established for the first time. Their branching fractions (including the ratio of hadronisation fractions in the case of the Ξ0 b baryon) are determined relative to the Λ 0 b → Λ + c π − decay.
Note: Reproducció del document publicat a:
It is part of: Journal of High Energy Physics, 2018, vol. 2018, num. 2, p. 1-20
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ISSN: 1126-6708
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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