Measurement of direct photon emission in $K^{+}\to {\pi }^{+}{\pi }^0\gamma$ decay using stopped positive kaons

Abstract

The radiative decay $K^{+}\to {\pi }^{+}{\pi }^0\gamma$ ($K_{\pi 2\gamma }$) has been measured with stopped positive kaons. A $K_{\pi 2\gamma }$ sample containing 4k events was analyzed, and the $K_{\pi 2\gamma }$ branching ratio of the direct photon emission process was determined to be $[6.1\pm 2.5(\mathrm{stat})\pm 1.9(\mathrm{syst})]\times 10^{-6}$. No interference pattern with internal bremsstrahlung was observed.

12 pages, 6 figures, 2 tables, to be published in Phys. Lett. B

References in corpus (3)

• Non-Leptonic Kaon Decays and the Chiral Anomaly
• Measurement of $\Gamma (K_{\mu 3})/\Gamma (K_{e3})$ ratio using stopped positive kaons
• Measurement of Direct Photon Emission in K^+ -> pi^+ pi^0 gamma Decay

Cited by in corpus (7)

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• Measurement of K^+ \to π^0 μ^+ νγdecay using stopped kaons
• Measurement of $K^{+}\to {\pi }^0{\pi }^0{e}^{+}\nu$ ($K_{e4}^{00}$) decay using stopped positive kaons
• New result on the measurement of the direct photon emission in K+ --> pi^+ pi^0 gamma decay
• Experimental study of direct photon emission in K- --> pi- pi0 gamma decay using ISTRA+ detector
• New determination of the branching ratio of the structure dependent radiative $K^{+}\to e^{+}{\nu }_e\gamma$ decay