Measurement of K^+ \to π^0 μ^+ νγdecay using stopped kaons

Abstract

The K^+ \to π^0 μ^+ νγ($K_{\mu 3\gamma }$) decay has been measured with stopped positive kaons at the KEK 12 GeV proton synchrotron. A $K_{\mu 3\gamma }$ sample containing 125 events was obtained. The partial branching ratio $Br(K_{\mu 3\gamma },E_{\gamma }>30\mathrm{MeV},{\theta }_{{\mu }^{+}\gamma }>20^{\circ })$ was found to be $[2.4\pm 0.5(stat)\pm 0.6(syst)]\times 10^{-5}$, which is in good agreement with theoretical predictions.

arXiv comment12 pages, 3 figures, to be published in Physics Letters B

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Cited by in corpus (4)

• $K_{l3\gamma }^{+}$ decays revisited: branching ratios and T-odd momenta correlations
• T-odd correlations in radiative K_l3^+ decays and chiral perturbation theory
• New determination of the branching ratio of the structure dependent radiative $K^{+}\to e^{+}{\nu }_e\gamma$ decay
• Measurement of the K+ -> pi0 mu+ nu_mu gamma Branching Ratio