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Triaxiality in the interacting boson model

Abstract : The signature splitting of the $\gamma$-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 $\gamma$-unstable SO(6) limit of the IBM and have well-known $\gamma$ 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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Submitted on : Friday, May 16, 2008 - 5:16:31 PM
Last modification on : Tuesday, March 19, 2019 - 5:12:08 PM
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B. Sorgunlu, P. van Isacker. Triaxiality in the interacting boson model. Nuclear Physics A, Elsevier, 2008, 808, pp.27-46. ⟨10.1016/j.nuclphysa.2008.05.007⟩. ⟨in2p3-00280394⟩

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