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−)π+, Bc+ → ψ(2S)π+π−π+, Bc+ → J/ψK+π−π+ and Bc+ → J/ψK+K−K+ are observed for the first time, and evidence for the Bc+ → ψ(2S)K+K−π+, 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.]

Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinen Gallego, F., Ackernley, T., Adeva, B., et al. (2022). Study of Bc+ decays to charmonia and three light hadrons. JOURNAL OF HIGH ENERGY PHYSICS, 2022(1) [10.1007/JHEP01(2022)065].

Study of Bc+ decays to charmonia and three light hadrons

Calvi M.;Capelli S.;Carniti P.;Fazzini D.;Garcia Pardinas J.;Gotti C.;Martinazzoli L.;Martinelli M.;Meloni S.;Minotti A.;Petruzzo M.;Pizzichemi M.;Shields E. B.;
2022

Abstract

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−)π+, Bc+ → ψ(2S)π+π−π+, Bc+ → J/ψK+π−π+ and Bc+ → J/ψK+K−K+ are observed for the first time, and evidence for the Bc+ → ψ(2S)K+K−π+, 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.]
Articolo in rivista - Articolo scientifico
B physics; Branching fraction; Flavor physics; Hadron-Hadron scattering (experiments);
English
Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinen Gallego, F., Ackernley, T., Adeva, B., et al. (2022). Study of Bc+ decays to charmonia and three light hadrons. JOURNAL OF HIGH ENERGY PHYSICS, 2022(1) [10.1007/JHEP01(2022)065].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/362738
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