Abstract
The -decay process of the halo nucleus into the continuum is studied in an updated three-body model. The nucleus is described as an system in hyperspherical coordinates on a Lagrange mesh. The shape and absolute values of the transition probability per time and energy units of new experiments are reproduced with a modified potential. The obtained total transition probabilities are for the full energy region and for the cut-off keV. The strong cancellation between the internal and halo parts of the decay matrix element is a challenge for future ab initio calculations.
- Received 6 September 2017
- Revised 9 November 2017
DOI:https://doi.org/10.1103/PhysRevC.97.014302
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