Abstract:\Ve have investigated the weak-interaction AS =AQ selection rule in the time distribution of leptonic decays of neutral K mesons. From a sample of approximately 20 000 visible K mesons produced in the reaction^-p-Eon in the BNL 30-in. liquid-hydrogen bubble chamber, we have identified Kr i e i v (92 events); Kr;'pfv (24 events): K -i~l v , 1 charge ambiguous K -r+l ITv, 1 mass ambiguous (10 events); K -rr+ T -y , p y > 90 iVleV/c ) (72 events) . We present a maximum-likelihood determination of the amplitude ra… Show more
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