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  • Observation of the decay $\...
    Adinolfi, Marco; Ajaltouni, Ziad; Alvarez Cartelle, Paula; Andreotti, Mirco; Atzeni, Michele; Balagura, Vladislav; Barlow, Roger; Batozskaya, Varvara; Beliy, Nikita; Belyaev, Ivan; Bernet, Roland; Bertolin, Alessandro; Bettler, Marc-Olivier; Borghi, Silvia; Borisyak, Maxim; Bowcock, Themistocles; Bozzi, Concezio; Buytaert, Jan; Calvi, Marta; Campora Perez, Daniel Hugo; Chamont, David; Chapman, Matthew George; Chen, Chen; Clarke, Peter; Closier, Joel; Coelho, Joao A B; Colombo, Tommaso; Corvo, Marco; Cruz Torres, Melissa Maria; D'Ambrosio, Carmelo; Dey, Biplab; Dordei, Francesca; Dreimanis, Karlis; Dutta, Deepanwita; Dziewiecki, Michal; Dziurda, Agnieszka; Eitschberger, Ulrich; Filippov, Sergey; Gallorini, Stefano; Garra Tico, Jordi; Gianì, Sebastiana; Gibson, Valerie; Girard, Olivier Göran; Golutvin, Andrey; Haefeli, Guido; Hilton, Martha; Hopchev, Plamen Hristov; Jacobsson, Richard; Johnson, Daniel; Jones, Christopher; Klimaszewski, Konrad; Koppenburg, Patrick; Kvaratskheliya, Tengiz; Lacarrere, Daniel; Langenbruch, Christoph; Lefèvre, Regis; Loi, Angelo; Lucchesi, Donatella; Maev, Oleg; Martinez Vidal, Fernando; Mathad, Abhijit; McNab, Andrew; Mead, James Vincent; Meinert, Nis; Moron, Jakub; Müller, Vanessa; Naik, Paras; Neufeld, Niko; Nikitin, Nikolay; Pais, Preema Rennee; Pastore, Alessandra; Pietrzyk, Boleslaw; Polci, Francesco; Polycarpo, Erica; Popov, Alexander; Prisciandaro, Jessica; Rachwal, Bartlomiej; Rademacker, Jonas; Remon Alepuz, Clara; Ricciardi, Stefania; Rodrigues, Eduardo; Roiser, Stefan; Romanovskiy, Vladimir; Ruiz Vidal, Joan; Schneider, Olivier; Spaan, Bernhard; Strokov, Sergey; Tayduganov, Andrey; Tomassetti, Luca; Tourinho Jadallah Aoude, Rafael; Tsaregorodtsev, Andrei; Ukleja, Artur; Valat, Sebastien; Vieira, Daniel; Waldi, Roland; Winn, Michael Andreas; Wyllie, Kenneth; Yang, Zishuo; Zhang, Yanxi; Zheng, Yangheng

    2018
    Report

    The Cabibbo-suppressed decay Λ$_{b}^{0}$ → ψ(2S)pπ$^{−}$ is observed for the first time using a data sample collected by the LHCb experiment in proton-proton collisions corresponding to 1.0, 2.0 and 1.9 fb$^{−1}$ of integrated luminosity at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The ψ(2S) mesons are reconstructed in the μ$^{+}$μ$^{−}$ final state. The branching fraction with respect to that of the Λ$_{b}^{0}$ → ψ(2S)pK$^{−}$ decay mode is measured to be