Study of Bc+ decays to charmonia and three light hadrons

The LHCb collaboration

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Using proton-proton collision data, corresponding to an integrated luminosity of 9 fb−1 collected with the LHCb detector, seven decay modes of the Bc+ meson into a J/ψ or ψ(2S) meson and three charged hadrons, kaons or pions, are studied. The decays Bc+ → (ψ(2S) → J/ψπ+π+, Bc+ → ψ(2S)π+ππ+, Bc+ → J/ψK+ππ+ and Bc+ → J/ψK+KK+ are observed for the first time, and evidence for the Bc+ → ψ(2S)K+Kπ+, decay is found, where J/ψ and ψ(2S) mesons are reconstructed in their dimuon decay modes. The ratios of branching fractions between the different Bc+ decays are reported as well as the fractions of the decays proceeding via intermediate resonances. The results largely support the factorisation approach used for a theoretical description of the studied decays. [Figure not available: see fulltext.]

Idioma originalInglés
Número de artículo65
PublicaciónJournal of High Energy Physics
EstadoPublicada - ene 2022


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