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

C. J. G. Onderwater; LHCb Collaboration

doi:10.1007/JHEP03(2019)126

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

C. J. G. Onderwater, LHCb Collaboration

Precision Frontier

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Abstract

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 fractionsB(Λ0b→ψ(2S)Λ)/B(Λ0b→J/ψΛ)=0.513±0.023(stat)±0.016(syst)±0.011(B)B(Λb0→ψ(2S)Λ)/B(Λb0→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.

Original language	English
Article number	126
Number of pages	16
Journal	Journal of High Energy Physics
Volume	2019
Issue number	3
DOIs	https://doi.org/10.1007/JHEP03(2019)126
Publication status	Published - Mar-2019

Keywords

B physics
Branching fraction
Flavor physics
Hadron-Hadron scattering (experiments)

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@article{f8801a093b0b447cb610ab3c13d1c31c,

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

abstract = "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 fractionsB(Λ0b→ψ(2S)Λ)/B(Λ0b→J/ψΛ)=0.513±0.023(stat)±0.016(syst)±0.011(B)B(Λb0→ψ(2S)Λ)/B(Λb0→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.",

keywords = "B physics, Branching fraction, Flavor physics, Hadron-Hadron scattering (experiments)",

author = "R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and L. Dufour and M. Mulder and Onderwater, {C. J. G.} and A. Pellegrino and S. Tolk and {van Veghel}, M. and {LHCb Collaboration}",

year = "2019",

month = mar,

doi = "10.1007/JHEP03(2019)126",

language = "English",

volume = "2019",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer",

number = "3",

}

TY - JOUR

T1 - Measurement of the ratio of branching fractions of the decays Λ b 0 → ψ(2S)Λ and Λ b 0 → J/ψΛ

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Dufour, L.

AU - Mulder, M.

AU - Onderwater, C. J. G.

AU - Pellegrino, A.

AU - Tolk, S.

AU - van Veghel, M.

AU - LHCb Collaboration

PY - 2019/3

Y1 - 2019/3

N2 - 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 fractionsB(Λ0b→ψ(2S)Λ)/B(Λ0b→J/ψΛ)=0.513±0.023(stat)±0.016(syst)±0.011(B)B(Λb0→ψ(2S)Λ)/B(Λb0→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.

AB - 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 fractionsB(Λ0b→ψ(2S)Λ)/B(Λ0b→J/ψΛ)=0.513±0.023(stat)±0.016(syst)±0.011(B)B(Λb0→ψ(2S)Λ)/B(Λb0→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.

KW - B physics

KW - Branching fraction

KW - Flavor physics

KW - Hadron-Hadron scattering (experiments)

U2 - 10.1007/JHEP03(2019)126

DO - 10.1007/JHEP03(2019)126

M3 - Article

SN - 1029-8479

VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 3

M1 - 126

ER -