Models of the Nonmesonic Weak Decay
Abstract
I review the current status of understanding the mechanism of the nonmesonic weak decays (NMWD) of hypernuclei. Long standing problem on the Gamman/Gammap ratio has been solved by considering short-range weak interactions properly. This leaves a few remaining problems, such as the asymmetry of the emitted proton with respect to the Lambda polarization and validity of the Delta I=1/2 in the nonmesonic weak decay.
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