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arXiv · 2611.03095

Shape coexisting intruder states in even Sn isotopes and their influence on the $B_{4/2}<1$ anomaly

P. Buganu·R. Benjedi·R. Budaca
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Abstract

The normal and intruder configuration states of the even $^{114-122}$Sn nuclei are described in a geometric model using a double well collective potential. It is shown that subtle changes in the potential shapes can reproduce the mass dependence of the low-lying energy levels and the associated $E0$ and $E2$ transitions. The extracted shape dynamics reveals different instances of shape coexistence with and without mixing, in all considered nuclei. This information is used to track the origin of $B_{4/2}<1$ values reported for $^{114,122}$Sn isotopes, providing thus a phenomenological interpretation.

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P. Buganu, R. Benjedi, R. Budaca. 2026-11-02. Shape coexisting intruder states in even Sn isotopes and their influence on the $B_{4/2}<1$ anomaly. https://arxiv.org/abs/2611.03095

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