Experimental search for the decay mode K_L -> pi⁰ gamma e^+ e^-

K. Murakami , Y. Hemmi , H. Kurashige , Y. Matono , T. Nomura , H. Sakamoto , N. Sasao , M. Suehiro

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Y. Takeuchi Y. Fukushima Y. Ikegami T. T. Nakamura T. Taniguchi M. Asai

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classification ✦ hep-ex

keywords decaygammamodeexperimentalsearchbranchingconductedconfidence

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We report on results of a search for the decay mode K_L -> pi^0 gamma e^+ e^- conducted by the E162 experiment at KEK. We observed no events and set a 90% confidence level upper limit of Br(K_L -> pi^0 gamma e^+ e^-)< 7.1x10^{-7} for its branching ratio. This is the first published experimental result on this decay mode.

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Experimental search for the decay mode K_L -> pi⁰ gamma e^+ e^-

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