Charge Asymmetry in the Decayηπ+πγ

Abstract
We have measured the charge asymmetry in the decay ηπ+πγ. η mesons were produced in the reaction πpηn at 730 and 810 MeVc incident pion momentum. The asymmetry is 0.005 ± 0.006 for 36155 events. We see no evidence for C-invariance violation in this decay.