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.

Zunica, G., Zuliani, D., Zou, Q., Zhuo, J., Zhukov, V., Zhu, X., et al. (2025). Observation of the Λb0→J/ψΞ-K+ and Ξb0→J/ψΞ-π+ decays. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 85(7) [10.1140/epjc/s10052-025-14129-6].

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

Salomoni M.;Pizzichemi M.;Minotti A.;Martinelli M.;Malentacca L.;Kirsebom V. S.;Pardinas J. G.;Fazzini D.;Carniti P.;Capelli S.;Calvi M.;Borsato M.;Anelli 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.
Articolo in rivista - Articolo scientifico
Astrophysics; Tellurium compounds
English
28-lug-2025
2025
85
7
812
open
Zunica, G., Zuliani, D., Zou, Q., Zhuo, J., Zhukov, V., Zhu, X., et al. (2025). Observation of the Λb0→J/ψΞ-K+ and Ξb0→J/ψΞ-π+ decays. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 85(7) [10.1140/epjc/s10052-025-14129-6].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/578841
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