Four decay modes of the Bc+ meson into a J/ψ meson and multiple charged kaons or pions are studied using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV and corresponding to an integrated luminosity of 9 fb−1. The decay Bc+→ J/ψK+K−π+π+π− is observed for the first time, and evidence for the Bc+→ J/ψ4π+3π− decay is found. The decay Bc+→ J/ψ3π+2π− is observed and the previous observation of the Bc+→ ψ(2S)π+π+π− decay is confirmed using the ψ(2S) → J/ψπ+π− decay mode. Ratios of the branching fractions of these four Bc+ decay channels are measured.

Study of Bc+ meson decays to charmonia plus multihadron final states

Bassi, G.
Membro del Collaboration Group
;
Kleijne, N.
Membro del Collaboration Group
;
Lusiani, A.
Membro del Collaboration Group
;
Morello, M. J.
Membro del Collaboration Group
;
Pica, L.
Membro del Collaboration Group
;
Ribatti, R.
Membro del Collaboration Group
;
2023

Abstract

Four decay modes of the Bc+ meson into a J/ψ meson and multiple charged kaons or pions are studied using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV and corresponding to an integrated luminosity of 9 fb−1. The decay Bc+→ J/ψK+K−π+π+π− is observed for the first time, and evidence for the Bc+→ J/ψ4π+3π− decay is found. The decay Bc+→ J/ψ3π+2π− is observed and the previous observation of the Bc+→ ψ(2S)π+π+π− decay is confirmed using the ψ(2S) → J/ψπ+π− decay mode. Ratios of the branching fractions of these four Bc+ decay channels are measured.
Study of $$ {B}_c^{+} $$ meson decays to charmonia plus multihadron final states
2023
Settore FIS/01 - Fisica Sperimentale
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
B Physics; Hadron-Hadron Scattering; QCD; Spectroscopy
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/149940
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