Khachatryan, V.Sirunyan, A. M.Tumasyan, A.Adam, W.Asilar, E.Bergauer, T.The CMS Collaboration2025-03-072025-03-0720170370-26931873-2445https://doi.org/10.1016/j.physletb.2016.11.001https://hdl.handle.net/20.500.12507/3035The decay B+ -> psi(2S) phi(1020) K+ is observed for the first time using data collected from pp collisions at root S = 8 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6 fb(-1). The branching fraction of this decay is measured, using the mode B+ -> psi(2S) K+ as normalization, to be (4.0 +/- 0.4 (stat)+/- 0.6 (syst)+/- 0.2 (B)) x 10(-6), where the third uncertainty is from the measured branching fraction of the normalization channel. (C) 2016 The Author(s). Published by Elsevier B.V.eninfo:eu-repo/semantics/openAccessCMSPhysicsB physicsRare B decaysArticle7646686WOS:0003901271000092-s2.0-8499660713710.1016/j.physletb.2016.11.001Q1Q1