Change of isotopic spin in the Kπ2 decay

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    Preliminary experimental results of J. Steinberger et al. seem to indicate thatf is much less than 1/3 but not zero. (Private communication from Dr.A. H. Rosenfeld).

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Gell-Mann, M. Change of isotopic spin in the Kπ2 decay. Nuovo Cim 5, 758–760 (1957).

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