The first observation of the Xib0->J/PsiXi-pi+ decay and the most precise measurement of the branching fraction of the Lambdab0->J/PsiXi-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 Lambdab0->J/PsiLambda and Xib- ->J/PsiXi- 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 Lambdab0 -> J/PsiXi-K+ and Xib0->J/PsiXi-pi+ decays

Riccardi D.
Membro del Collaboration Group
;
Pica L.
Membro del Collaboration Group
;
Passaro D.
Membro del Collaboration Group
;
Morello M. J.
Membro del Collaboration Group
;
Kleijne N.
Membro del Collaboration Group
;
Bassi G.
Membro del Collaboration Group
;
2025

Abstract

The first observation of the Xib0->J/PsiXi-pi+ decay and the most precise measurement of the branching fraction of the Lambdab0->J/PsiXi-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 Lambdab0->J/PsiLambda and Xib- ->J/PsiXi- 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
Settore FIS/01 - Fisica Sperimentale
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/164043
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