Observation of $B^{\pm }\to \psi (2S){\pi }^{\pm }$ and search for direct CP-violation

V. Bhardwaj, R. Kumar, J. B. Singh

We report the first observation of $B^{\pm }\to \psi (2S){\pi }^{\pm }$, a Cabibbo- and color-suppressed decay. This analysis is based on $657\times 10^6$ $B\overline{B}$ events collected at t…