Search for the rare decay K+ -> pi+ gamma
E787 Collaboration
Abstract
We have performed a search for the angular-momentum forbidden decay K+ -> pi+ gamma with the E787 detector at BNL. No events were observed in the pi+ kinematic region around 227 MeV/c. An upper limit on the branching ratio for the decay is determined to be 3.6 x 10-7 at 90% confidence level.
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