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Title

Measurement of the ratio of branching fractions of the decays Λ b 0  → ψ(2S)Λ and Λ b 0  → J/ψΛ

AuthorsGarcía Martín, L. M.; Henry, L.; Martínez-Vidal, Fernando ; Oyanguren, Arantza ; Remón Alepuz, Clara; Ruiz Valls, Pablo ; Ruiz Vidal, Joan; Sánchez Mayordomo, Carlos ; LHCb Collaboration
Issue DateMar-2019
PublisherInstitute of Physics Publishing
CitationJournal of High Energy Physics 2019: 126 (2019)
AbstractUsing 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.
URIhttp://hdl.handle.net/10261/194703
Identifiersdoi: 10.1007/JHEP03(2019)126
issn: 1029-8479
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