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(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.[Figure not available: see fulltext.]

Original language	English
Article number	126
Journal	Journal of High Energy Physics
Volume	2019
Issue number	3
DOIs	https://doi.org/10.1007/JHEP03(2019)126
Publication status	Published - 1 Mar 2019

Keywords

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

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP03(2019)126

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The LHCb Collaboration, & Wagner, A. R. (2019). Measurement of the ratio of branching fractions of the decays Λ _b ⁰ → ψ(2S)Λ and Λ _b ⁰ → J/ψΛ. Journal of High Energy Physics, 2019(3), [126]. https://doi.org/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. / The LHCb Collaboration; Wagner, Alexander Rudolfovich.

In: Journal of High Energy Physics, Vol. 2019, No. 3, 126, 01.03.2019.

Research output: Contribution to journal › Article

The LHCb Collaboration & Wagner, AR 2019, 'Measurement of the ratio of branching fractions of the decays Λ _b ⁰ → ψ(2S)Λ and Λ _b ⁰ → J/ψΛ', Journal of High Energy Physics, vol. 2019, no. 3, 126. https://doi.org/10.1007/JHEP03(2019)126

The LHCb Collaboration, Wagner AR. Measurement of the ratio of branching fractions of the decays Λ _b ⁰ → ψ(2S)Λ and Λ _b ⁰ → J/ψΛ. Journal of High Energy Physics. 2019 Mar 1;2019(3). 126. https://doi.org/10.1007/JHEP03(2019)126

The LHCb Collaboration ; Wagner, Alexander Rudolfovich. / Measurement of the ratio of branching fractions of the decays Λ _b ⁰ → ψ(2S)Λ and Λ _b ⁰ → J/ψΛ. In: Journal of High Energy Physics. 2019 ; Vol. 2019, No. 3.

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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",

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(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.[Figure not available: see fulltext.] ",

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

author = "{The LHCb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and F. Archilli and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and F. Baryshnikov and V. Batozskaya and V. Battista and A. Bay and L. Beaucourt and A. Mazurov and A. Petrov and Wagner, {Alexander Rudolfovich}",

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AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

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AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Babuschkin, I.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

AU - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Baranov, A.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Baryshnikov, F.

AU - Batozskaya, V.

AU - Battista, V.

AU - Bay, A.

AU - Beaucourt, L.

AU - Mazurov, A.

AU - Petrov, A.

AU - Wagner, Alexander Rudolfovich

PY - 2019/3/1

Y1 - 2019/3/1

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(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.[Figure not available: see fulltext.]

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(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.[Figure not available: see fulltext.]

KW - B physics

KW - Branching fraction

KW - Flavor physics

KW - Hadron-Hadron scattering (experiments)

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