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 second is systematic and the third is due to the external branching fractions used.

Document Type

Article

Published version

Language

English

Subjects and keywords

Hadrons; Física de partícules; Experiments; Hadrons; Particle physics; Experiments

Publisher

Springer Verlag

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Reproducció del document publicat a: https://doi.org/10.1007/JHEP03(2019)126

Journal of High Energy Physics, 2019, p. 126

https://doi.org/10.1007/JHEP03(2019)126

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cc-by (c) LHCb Collaboration et al., 2019

http://creativecommons.org/licenses/by/3.0/es

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Física Quàntica i Astrofísica [2993]

Institut de Ciències del Cosmos (ICCUB) [1047]

ISGlobal - Institut de Salut Global de Barcelona [61336]