Observation of the Lambda(0)(b) -> Lambda+cK+K-pi(-) decay

Lesya Shchutska, Olivier Schneider, Aurelio Bay, Guido Haefeli, Frédéric Blanc, Tatsuya Nakada, Michel De Cian, Elena Graverini, Veronica Sølund Kirsebom, Ettore Zaffaroni, Matthieu Philippe Luther Marinangeli, Minh Tâm Tran, Pietro Marino, Federico Leo Redi, Plamen Hristov Hopchev, Violaine Bellée, Maria Vieites Diaz, Pavol Stefko, Tara Nanut, Maria Elena Stramaglia, Vladimir Macko, Guillaume Max Pietrzyk, Sebastian Schulte, Lino Ferreira Lopes, Surapat Ek-In, Carina Trippl, Sara Celani, Serhii Cholak, Ana Bárbara Rodrigues Cavalcante, Valérie Jeanne Thérèse Renaudin-Schouler
2021

Résumé

The Lambda(0)(b) -> Lambda+cK+K-pi(-) decay is observed for the first time using a data sample of proton-proton collisions at centre-of-mass energies of root s = 7 and 8 TeV collected by the LHCb detector, corresponding to an integrated luminosity of 3fb(-1). The ratio of branching fractions between the Lambda(0)(b) -> Lambda K-+(c)+ K-pi(-) and the Lambda(0)(b) -> Lambda D-+(c)s(-) decays is measured to be

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