We have performed a search for the angular-momentum forbidden decay K + → π+γ with the E787 detector at BNL. No events were observed in the π+ kinematic region around 227 MeV/c. An upper limit on the branching ratio for the decay is determined to be 3.6 ×10-7 at 90% confidence level.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics