Study of B c + meson decays to charmonia plus multihadron final states

• Published in: The journal of high energy physics no. 7
• Main Authors: Aaij, R., Adlarson, Patrik, Alexander, M., Bobulska, D., Douglas, L., Eklund, Lars, Friday, D. A., Grillo, L., Kupsc, Andrzej, Longstaff, I., McHugh, N. T., Petric, M., Schiller, M., Soler, F. J. P., Spradlin, P., Whitehead, M., Zunica, G.
• Format: Journal Article
• Language: English
• Published: 2023
• Subjects: B Physics; Hadron-Hadron Scattering; QCD; Spectroscopy
• ISSN: 1029-8479; 1126-6708
• DOI: 10.1007/JHEP07(2023)198

Four decay modes of the B-c(+) meson into a J/psi 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 13TeV and corresponding to an integrated luminosity of 9 fb(-1). The decay B-c(+) -> J/psi K+ K- pi(+)pi(+)pi(-) is observed for the first time, and evidence for the B-c(+) -> J/psi 4 pi(+)3 pi(-) decay is found. The decay B-c(+) -> J/psi 3 pi(+)2 pi(-) is observed and the previous observation of the B-c(+) -> psi(2S)pi(+)pi(+)pi(-) decay is confirmed using the psi(2S) -> J/psi pi(+)pi(-) decay mode. Ratios of the branching fractions of these four B-c(+) decay channels are measured.