We have searched for the decay B0 → ϕγ using the full Belle data set of 772 × 10^6 BBbar pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB e+e- collider. No signal is observed, and we setan upper limit on the branching fraction. This is the most stringent limit on this decay mode to date.
Keyword
Particle Physics; High energy physics; Collider physics