The nonadiabatic quasiparticle approach is applied to study chiral doublet bands in ${}^{128}\mathrm{Cs}, {}^{130}\mathrm{Cs}$, and ${}^{130}\mathrm{La}$. The calculated energy spectra and electromagnetic transition probabilities reproduce quite well the experimental data. ${}^{130}\mathrm{Cs}$ turns out to be a better example for chiral symmetry breaking than ${}^{128}\mathrm{Cs}$, unlike it has been suggested in earlier studies. We present the first theoretical investigation of chiral geometry and its correlation with the single-particle configurations in ${}^{130}\mathrm{La}$ to understand the mode of chirality, i.e., static or vibrational.

• Received 1 December 2020
• Accepted 2 February 2021

DOI:https://doi.org/10.1103/PhysRevC.103.024327