Measurement of K^+ \to \pi^0 \mu^+ \nu \gamma decay using stopped kaons

Phys.Lett.B633:190-194,2006 The K^+ \to \pi^0 \mu^+ \nu \gamma ($K_{\mu 3 \gamma}$) 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}&g...

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Main Authors Collaboration, KEK-E470, :, Shimizu, S, Horie, K, Aliev, M. A, Asano, Y, Baker, T, Depommier, P, Hasinoff, M, Igarashi, Y, Imazato, J, Ivashkin, A. P, Khabibullin, M. M, Khotjantsev, A. N, Kudenko, Y. G, Levchenko, A. S, Lim, G. Y, Macdonald, J. A, Mineev, O. V, Rangacharyulu, C, Sawada, S
Format Journal Article
LanguageEnglish
Published 25.12.2005
Subjects
Physics - High Energy Physics - Experiment
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Summary:Phys.Lett.B633:190-194,2006 The K^+ \to \pi^0 \mu^+ \nu \gamma ($K_{\mu 3 \gamma}$) 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 $Br(K_{\mu 3 \gamma}, E_{\gamma}>30 {\rm MeV}, \theta_{\mu^+ \gamma}>20^{\circ})$ 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.
DOI:10.48550/arxiv.hep-ex/0512068