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On the Delta I = 1/2 rule in the Lambda N ----> N N reaction

Z. Rudy·W. Cassing·L. Jarczyk·B. Kamys·P. Kulessa·O. W. B. Schult·A. Strzalkowski
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Abstract

It is shown that the mass dependence of the $Λ$-lifetime in heavy hypernuclei is sensitive to the ratio of neutron-induced to proton-induced non-mesonic decay rates R_n/R_p. A comparison of the experimental mass dependence of the lifetimes with the calculated ones for different values of R_n/R_p leads to the conclusion that this ratio is larger than 2 on the confidence level of 0.75. This suggests that the phenomenological $Δ$I=1/2 rule might be violated for the nonmesonic decay of the $Λ$-hyperon.

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Z. Rudy, W. Cassing, L. Jarczyk, B. Kamys, P. Kulessa, O. W. B. Schult, A. Strzalkowski. 1999-04-13. On the Delta I = 1/2 rule in the Lambda N ----> N N reaction. https://doi.org/10.1007/s100500050267

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