Observation of $X(3872)\to J/\psi \gamma$ and search for $X(3872)\to {\psi }^{\prime }\gamma$ in B decays

V. Bhardwaj, K. Trabelsi, J. B. Singh +2

We report a study of $B\to (J/\psi \gamma )K$ and $B\to ({\psi }^{\prime }\gamma )K$ decay modes using $772\times 10^6$ $B\bar{B}$ events collected at the Υ(4S)$ resonance with the Belle detector at the KEKB…