Observation of $B^{+}\to \psi (2S)\varphi K^{+}$

The high luminosity and large cross section for b-quark production at the LHC makes possible the observation and study of many rare B meson decays. Recently, CMS reported on the presence of substructures in the known decay $B^{+}\to J/\psi \varphi K^{+}$. As part of that investigation, the final state $B^{+}\to \psi (2S)\varphi K^{+}$ , with $\psi (2S)\to \mu^{+}\mu ^{-}$and $\varphi \to K^{+}K^{-}$was also observed. We report the signal, with a significance of over 5 standard deviations using 19.6 $fb^{-1}$ data collected at $\surd $s $=$ 8 TeV at CMS, and its branching fraction measurement.