2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/178678The radiative decay $K^+ \to π^+ π^0 γ$ ($K_{π2 γ}$) has been measured with stopped positive kaons. A $K_{π2 γ}$ sample containing 4k events was analyzed, and the $K_{π2 γ}$ branching ratio of the direct photon emission process was determined to be $[6.1\pm2.5({\rm stat})\pm1.9({\rm syst})]\times 10^{-6}$. No interference pattern with internal bremsstrahlung was observed.12 pages, 6 figures, 2 tables, to be published in Phys. Lett. BHigh Energy Physics - Experimenttext