Selection rules of electromagnetic transitions for chirality-parity violation in atomic nuclei

[Display omitted] The nuclear Chirality-Parity (ChP) violation, a simultaneous breaking of chiral and reflection symmetries in the intrinsic frame, is investigated with a reflection-asymmetric triaxial particle rotor model. A new symmetry for an ideal ChP violation system is found and the correspond...

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Bibliographic Details
Published in:Science bulletin (Beijing) 2020-12, Vol.65 (23), p.2001-2006
Main Authors: Wang, Yuanyuan, Wu, Xinhui, Zhang, Shuangquan, Zhao, Pengwei, Meng, Jie
Format: Article
Language:English
Subjects:
Chiplex
Chiture
Selection rules of electromagnetic transitions
Spontaneously symmetry breaking
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Summary:[Display omitted] The nuclear Chirality-Parity (ChP) violation, a simultaneous breaking of chiral and reflection symmetries in the intrinsic frame, is investigated with a reflection-asymmetric triaxial particle rotor model. A new symmetry for an ideal ChP violation system is found and the corresponding selection rules of the electromagnetic transitions are derived. The fingerprints for the ChP violation including the nearly degenerate quartet bands and the selection rules of the electromagnetic transitions are provided. These fingerprints are examined for ChP quartet bands by taking a two-j shell h11/2 and d5/2 with typical energy spacing for A = 130 nuclei.
ISSN:2095-9273
DOI:10.1016/j.scib.2020.08.028