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Mirror symmetry and cluster structures of resonant states in Be9 and B9

Myagmarjav Odsuren1,*, Yuma Kikuchi2,†, Takayuki Myo3,4,‡, and Kiyoshi Katō5,§

  • *Contact author: odsuren@num.edu.mn
  • †Contact author: kikuchi@tokuyama.ac.jp
  • ‡Contact author: takayuki.myo@oit.ac.jp
  • §Contact author: kato@nucl.sci.hokudai.ac.jp
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Phys. Rev. C 113, 024324 – Published 17 February, 2026

DOI: https://doi.org/10.1103/2kn8-vd5t

Abstract

We apply the complex-scaling method (CSM) to the α+α+N three-body model to study the nuclear structure of Be9 and B9 nuclei, focusing mainly on mirror symmetry in the resonant states. In our previous paper [Phys. Rev. C 110, 064316 (2024)], we reported the energy-level structure below about 15 MeV excitation energy in Be9 and B9 nuclei and discussed the significant effect of the Coulomb force. In this paper, we investigate the wave functions of these states, i.e., the matter- and charge-distribution radii, and the cluster-channel amplitudes. The results show a clear mirror-symmetry breaking between Be9 and B9 nuclei, which is mainly due to the Coulomb interaction.

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Phys. Rev. C 113, 024324– Published 17 February, 2026
  • Received 15 December 2025
  • Accepted 26 January 2026
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