Measurement of the ratio of branching fractions of the decays Λ b0 → ψ(2S)Λ and Λ b0 → J/ψΛ

Using pp collisions corresponding to 3 fb−1 integrated luminosity, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV, the ratio of branching fractions B(Λ0b→ψ(2S)Λ)/B(Λ0b→J/ψΛ)=0.513±0.023(stat)±0.016(syst)±0.011(B) is determined. The first uncertainty is statistical, the sec...

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Authors: LHCb Collaboration; Alfonso Albero, Alejandro; Calvo Gómez, Míriam; Camboni, Alessandro; Coquereau, Samuel; Garrido Beltrán, Lluís; Gascón Fora, David; Gironella Gironell, Pere; Graciani Díaz, Ricardo; Graugés Pous, Eugeni; Marin Benito, Carla; Picatoste Olloqui, Eduardo; Vilasis-Cardona, Xavier
Format: Article
Status:Published version
Publication date:2019
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/162302
Online Access:https://hdl.handle.net/2445/162302
Access Level:Open access
Keyword:Hadrons
Física de partícules
Experiments
Particle physics
Summary:Using pp collisions corresponding to 3 fb−1 integrated luminosity, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV, the ratio of branching fractions B(Λ0b→ψ(2S)Λ)/B(Λ0b→J/ψΛ)=0.513±0.023(stat)±0.016(syst)±0.011(B) is determined. The first uncertainty is statistical, the second is systematic and the third is due to the external branching fractions used.

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