Observation of the Λb0→J/ψΞ-K+ and Ξb0→J/ψΞ-π+ decays

LHCb collaboration

doi:10.1140/epjc/s10052-025-14129-6

Observation of the Λb0→J/ψΞ-K+ and Ξb0→J/ψΞ-π+ decays

LHCb collaboration

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1 Scopus citations

Abstract

The first observation of the Ξb0→J/ψΞ-π+ decay and the most precise measurement of the branching fraction of the Λb0→J/ψΞ-K+ decay are reported, using proton-proton collision data from the LHCb experiment collected in 2016–2018 at a centre-of-mass energy of 13\,TeV, corresponding to an integrated luminosity of 5.4\,fb-1. Using the Λb0→J/ψΛ and Ξb-→J/ψΞ- decays as normalisation channels, the ratios of branching fractions are measured to be (Formula presented.) where the first uncertainty is statistical and the second systematic.

Original language	Swedish
Article number	812
Journal	European Physical Journal C
Volume	85
Issue number	7
DOIs	https://doi.org/10.1140/epjc/s10052-025-14129-6
State	Published - Jul 2025

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@article{afb0bae917c84a0588542bd61ce9d34c,

title = "Observation of the Λb0→J/ψΞ-K+ and Ξb0→J/ψΞ-π+ decays",

abstract = "The first observation of the Ξb0→J/ψΞ-π+ decay and the most precise measurement of the branching fraction of the Λb0→J/ψΞ-K+ decay are reported, using proton-proton collision data from the LHCb experiment collected in 2016–2018 at a centre-of-mass energy of 13\textbackslash{},TeV, corresponding to an integrated luminosity of 5.4\textbackslash{},fb-1. Using the Λb0→J/ψΛ and Ξb-→J/ψΞ- decays as normalisation channels, the ratios of branching fractions are measured to be (Formula presented.) where the first uncertainty is statistical and the second systematic.",

author = "LHCb collaboration and G. Zunica and D. Zuliani and Q. Zou and J. Zhuo and V. Zhukov and X. Zhu and X. Zhu and Zhu, \{L. Z.\} and V. Zhovkovska and Y. Zhou and X. Zhou and T. Zhou and Y. Zheng and Zheng, \{X. Z.\} and Zheng, \{S. Z.\} and A. Zhelezov and Y. Zhao and Z. Zhang and Zhang, \{Y. Z.\} and Y. Zhang and S. Zhang and S. Zhang and L. Zhang and J. Zhang and D. Zhang and C. Zhang and M. Zeng and C. Zeng and F. Zenesini and M. Zdybal and M. Zavertyaev and E. Zaffaroni and Y. Yuan and X. Yuan and J. Yu and Yu, \{C. Y.\} and X. Yin and H. Yin and H. Yeung and V. Yeroshenko and Z. Yang and Y. Yang and X. Yang and S. Yang and K. Yang and Z. Xu and Z. Xu and Z. Xu and E. Shmanin and Milanes, \{D. A.\}",

note = "Publisher Copyright: {\textcopyright} CERN for the benefit of the LHCb collaboration 2025.",

year = "2025",

month = jul,

doi = "10.1140/epjc/s10052-025-14129-6",

language = "Sueco",

volume = "85",

journal = "European Physical Journal C",

issn = "1434-6044",

number = "7",

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T1 - Observation of the Λb0→J/ψΞ-K+ and Ξb0→J/ψΞ-π+ decays

AU - LHCb collaboration

AU - Zunica, G.

AU - Zuliani, D.

AU - Zou, Q.

AU - Zhuo, J.

AU - Zhukov, V.

AU - Zhu, X.

AU - Zhu, L. Z.

AU - Zhovkovska, V.

AU - Zhou, Y.

AU - Zhou, X.

AU - Zhou, T.

AU - Zheng, Y.

AU - Zheng, X. Z.

AU - Zheng, S. Z.

AU - Zhelezov, A.

AU - Zhao, Y.

AU - Zhang, Z.

AU - Zhang, Y. Z.

AU - Zhang, Y.

AU - Zhang, S.

AU - Zhang, L.

AU - Zhang, J.

AU - Zhang, D.

AU - Zhang, C.

AU - Zeng, M.

AU - Zeng, C.

AU - Zenesini, F.

AU - Zdybal, M.

AU - Zavertyaev, M.

AU - Zaffaroni, E.

AU - Yuan, Y.

AU - Yuan, X.

AU - Yu, J.

AU - Yu, C. Y.

AU - Yin, X.

AU - Yin, H.

AU - Yeung, H.

AU - Yeroshenko, V.

AU - Yang, Z.

AU - Yang, Y.

AU - Yang, X.

AU - Yang, S.

AU - Yang, K.

AU - Xu, Z.

AU - Shmanin, E.

AU - Milanes, D. A.

PY - 2025/7

Y1 - 2025/7

N2 - The first observation of the Ξb0→J/ψΞ-π+ decay and the most precise measurement of the branching fraction of the Λb0→J/ψΞ-K+ decay are reported, using proton-proton collision data from the LHCb experiment collected in 2016–2018 at a centre-of-mass energy of 13\,TeV, corresponding to an integrated luminosity of 5.4\,fb-1. Using the Λb0→J/ψΛ and Ξb-→J/ψΞ- decays as normalisation channels, the ratios of branching fractions are measured to be (Formula presented.) where the first uncertainty is statistical and the second systematic.

AB - The first observation of the Ξb0→J/ψΞ-π+ decay and the most precise measurement of the branching fraction of the Λb0→J/ψΞ-K+ decay are reported, using proton-proton collision data from the LHCb experiment collected in 2016–2018 at a centre-of-mass energy of 13\,TeV, corresponding to an integrated luminosity of 5.4\,fb-1. Using the Λb0→J/ψΛ and Ξb-→J/ψΞ- decays as normalisation channels, the ratios of branching fractions are measured to be (Formula presented.) where the first uncertainty is statistical and the second systematic.

UR - https://www.scopus.com/pages/publications/105016093653

U2 - 10.1140/epjc/s10052-025-14129-6

DO - 10.1140/epjc/s10052-025-14129-6

M3 - Artículo

AN - SCOPUS:105016093653

SN - 1434-6044

VL - 85

JO - European Physical Journal C

JF - European Physical Journal C

IS - 7

M1 - 812

ER -

Observation of the Λb0→J/ψΞ-K+ and Ξb0→J/ψΞ-π+ decays

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