Abstract
In an effort to resolve the theoretical difficulties in explaining the total and partial decay rates and the ratio a four-baryon point interaction is suggested as a new model for the short-range part of the nonmesonic weak decay of hypernuclei in addition to the traditional one-pion-exchange model for the long-range part. It is shown that with any value of the axial vector coupling constant in the range for the isoscalar weak current of nucleons, i.e., transitions, the partial and the total nonmesonic decay rates and and the ratios of and are excellently fitted in the experimental data.
- Received 15 May 2000
DOI:https://doi.org/10.1103/PhysRevC.63.044012
©2001 American Physical Society