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arXiv · 0805.2560

Triaxiality in the interacting boson model

B. Sorgunlu·P. Van Isacker
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Abstract

The signature splitting of the $γ$-vibrational band of several Ru, Pd, Xe, Ba, Os and Pt isotopes is analyzed in the framework of the interacting boson model (IBM). The nuclei studied are close to the $γ$-unstable SO(6) limit of the IBM and have well-known $γ$ bands. It is shown that in most nuclei the signature splitting is better reproduced by the inclusion of a three-body interaction between the $d$ bosons. In none of the nuclei evidence for a stable, triaxial ground-state shape is found.

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B. Sorgunlu, P. Van Isacker. 2008-05-16. Triaxiality in the interacting boson model. https://doi.org/10.1016/j.nuclphysa.2008.05.007

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