The Delta I=1/2 rule in non-mesonic weak decay of Lambda-hypernuclei

Details The Delta I=1/2 rule in non-mesonic weak decay of Lambda-hypernuclei The Delta I=1/2 rule in non-mesonic weak decay of Lambda-hypernuclei

2000-01-07

arxiv.org/abs/nucl-th/0001012v3

Phys.Lett. B486 (2000) 362-368

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1016/S0370-2693(00)00766-8

By employing recent data on non-mesonic decay of s-shell Lambda-hypernuclei we study, within the phenomenological model of Block and Dalitz, the validity of the Delta I=1/2 rule in the Lambda N--> NN process. Due to the low experimental precision, a possible violation of this rule can be neither proved nor excluded at present with sufficient accuracy: a pure Delta I=1/2 transition amplitude is excluded at 40% confidence level.

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