Yetkin, Elif Aslı2021-03-112021-03-112017-01-10https://hdl.handle.net/11411/3372https://doi.org/10.1016/j.physletb.2016.11.001The 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.eninfo:eu-repo/semantics/openAccessCMSPhysicsB physicsRare B decaysArticle10.1016/j.physletb.2016.11.001N/AWOS:000390127100009