Phys. Rev. 156, 1698–1702 (1967)Model for the ΔI=1/2 RuleReceived 9 February 1966; revised 25 July 1966; published in the issue dated April 1967 We show that a modification of the Cabibbo theory leads to identical results concerning the leptonic decays of hyperons but additionally contains the ΔI=1/2 rule. The ΔI=1/2 rule so obtained is weakly broken, but the deviations are not inconsistent with experiment. (The estimated rate for K+→π+π0 is somewhat less than experimentally observed.) The model differs from Cabibbo's theory in that GV (β decay)/GV(muon decay )=1 rather than cosθ=0.966. Branching ratios of the intermediate bosons are estimated. © 1967 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRev.156.1698
DOI:
10.1103/PhysRev.156.1698
PACS:
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