Doublet bands in Cs126 in the triaxial rotor model coupled with two quasiparticles

The positive-parity doublet bands based on the πh11/2 νh11/2 configuration in Cs126 were investigated in the two quasiparticles coupled with a triaxial rotor model. The energy spectra E(I), energy staggering parameter S(I)=[E(I)-E(I-1)]/2I,B(M1) and B(E2) values, intraband B(M1)/B(E2) ratios, B(M1)in/B(M1)out ratios, and orientation of the angular momentum for the rotor as well as the valence proton and neutron are calculated. After including the pairing correlation, good agreement has been obtained between the calculated results and the data available, which supports the interpretation of this positive-parity doublet bands as chiral bands. © 2007 The American Physical Society.