https://doi.org/10.1051/epjconf/201922202010
Search for new decays of the Λ0b baryon at the LHCb experiment
Institute for Theoretical and Experimental Physics, NRC «Kurchatov Institute»,
B. Cheremushkinskaya st. 25,
Moscow,
117218,
Russia
* e-mail: Dmitrii.Pereima@cern.ch
Published online: 19 November 2019
High statistics collected by the LHCb experiment between 2011 and 2018 in proton-proton (pp) collisions at the Large Hadron Colllider (LHC), jointly with the large cross-section of bb− pairs production provides unique possibility for the search and study new decays of beauty hadrons. The results of search for new decays of the Λ0b baryons are presented. In particular the decays Λ0b → Λ+c pp−π−, Λ0b → J/ψΛ, Λ0b → ψ(2S)Λ, Λ0b → ψ(2S)pπ−, Λ0b → χc1(3872)pK− and Λ0b → Λγ are found and branching fraction ratios measurement for these decays are done. Also the study of the Λ0bπ+π− systems led to the observation of two new excited Λ0b states, denoted as Λb(6146)0 and Λb(6152)0, are found.
© The Authors, published by EDP Sciences, 2019
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