166Er exhibits rigid triaxial deformation at gamma=9.7 degrees in the SU(3)-IBM, with calculated spectra, B(E2) values, and moments matching experiment and supporting triaxial over prolate shape.
Wang, B(E2) anomaly cannot be explained with O(6) higher-order interactions, Phys
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Rigid triaxiality has the SU(3) symmetry: $^{166}$Er as an example
166Er exhibits rigid triaxial deformation at gamma=9.7 degrees in the SU(3)-IBM, with calculated spectra, B(E2) values, and moments matching experiment and supporting triaxial over prolate shape.