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  • Alessio, F.; Aliouche, Z.; Artamonov, A.; Audurier, B.; Barbetti, M.; Bellee, V.; Bolognani, C. S.; Calabrese, R.; Carboni, G.; Cervenkov, D.; Cholak, S.; De Capua, S.; de Vries, J. A.; Debernardis, F.; Esen, S.; Evans, T.; Fan, Y.; Filippov, S.; Fleuret, F.; Forty, R.; Gandelman, M.; Gaspar, C.; Gersabeck, E.; Giemza, H. K.; Giza, M. A.; Göbel, C.; Haimberger, J.; Hill, D.; Hou, Y.; Iniukhin, A.; Jevtic, V.; Karpenkov, D.; Keizer, F.; Kenzie, M.; Kharisova, A.; Kopecna, R.; Kostiuk, I.; Lanfranchi, G.; Langenbruch, C.; Lazzaroni, M.; Legotin, S.; Lindner, R.; Lopes, J. H.; Lopez Huertas, A.; Lovell, G. H.; Maciuc, F.; Madhan Mohan, L. R.; Malde, S.; Malinin, A.; Matev, R.; Mauricio, J.; Mazurek, M.; McHugh, N. T.; Meadows, B.; Monroy, I. A.; Moron, J.; Murta, R.; Muzzetto, P.; Nandakumar, R.; Normand, C.; Oyanguren, A.; Pais, P. R.; Parkes, C.; Pica, L.; Pinci, D.; Plews, J.; Poslavskii, S.; Qu, S.; Ribatti, R.; Richardson-Slipper, M.; Salomoni, M.; Schmitt, S.; Sciascia, B.; Semennikov, A.; Seuthe, A.; Smith, M.; Solomin, A.; Solovev, A.; Spaan, B.; Spiridenkov, E.; Stahl, M.; Strekalina, D.; Svihra, P.; Tan, Y.; Tomassetti, L.; Valassi, A.; Vazquez Regueiro, P.; Vázquez Sierra, C.; Vorobyev, V.; Wei, Y.; Williams, M.; Wilson, F. F.; Wotton, S. A.; Xu, L.; Yeroshenko, V.; Zhang, L.; Zhang, Y.; Zhou, X.; Zhu, X.; Zhukov, V.

    The journal of high energy physics, 07/2023, Letnik: 2023, Številka: 7
    Journal Article

    A bstract Four decay modes of the B c + 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 B c + → J/ψK + K − π + π + π − is observed for the first time, and evidence for the B c + → J/ψ 4 π + 3 π − decay is found. The decay B c + → J/ψ 3 π + 2 π − is observed and the previous observation of the B c + → ψ (2 S ) π + π + π − decay is confirmed using the ψ (2 S ) → J/ψπ + π − decay mode. Ratios of the branching fractions of these four B c + decay channels are measured.