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ββ2ν decay in 48Ca

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ββ2ν decay in 48Ca

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Capilla Romá, María Teresa; Desplanques, B.; Noguera Puchol, Santiago

Aquest document és un/a article, creat/da en: 2001

Este documento está disponible también en : 10.1103/PhysRevC.63.055503

A schematic study of the bb2n decay of 48Ca is made in a shell-model approach. The emphasis is especially put on the role of the spin-orbit potential in relation with the contribution of other terms in the strong interaction. This is discussed with a particular attention to the behavior of these ones under the SU~4! symmetry. Different methods in calculating the transition amplitude are also looked at with the aim to determine their reliability and, eventually, why they do not work. Further aspects relative to the failure of the operator expansion method to reproduce the results of more elaborate calculations are examined.

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