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.

Observation of the Λb0→J/ψΞ-K+ and Ξb0→J/ψΞ-π+ decays / Zunica, G., Zuliani, D., Zou, Q., Zhuo, J., Zhukov, V., Zhu, X., Zhu, X., Zhu, L.Z., Zhovkovska, V., Zhou, Y., Zhou, X., Zhou, T., Zheng, Y., Zheng, X.Z., Zheng, S.Z., Zhelezov, A., Zhao, Y., Zhang, Z., Zhang, Y.Z., Zhang, Y., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 85:7(2025), pp. 0-0. [10.1140/epjc/s10052-025-14129-6]

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

Bizzeti A.;
2025

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.
2025
85
7
0
0
Observation of the Λb0→J/ψΞ-K+ and Ξb0→J/ψΞ-π+ decays / Zunica, G., Zuliani, D., Zou, Q., Zhuo, J., Zhukov, V., Zhu, X., Zhu, X., Zhu, L.Z., Zhovkovska, V., Zhou, Y., Zhou, X., Zhou, T., Zheng, Y., Zheng, X.Z., Zheng, S.Z., Zhelezov, A., Zhao, Y., Zhang, Z., Zhang, Y.Z., Zhang, Y., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 85:7(2025), pp. 0-0. [10.1140/epjc/s10052-025-14129-6]
Zunica, G.; Zuliani, D.; Zou, Q.; Zhuo, J.; Zhukov, V.; Zhu, X.; Zhu, X.; Zhu, L. Z.; Zhovkovska, V.; Zhou, Y.; Zhou, X.; Zhou, T.; Zheng, Y.; Zheng, ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1392464
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