The projected shell model analysis is carried out using the triaxial Nilsson $+$ BCS basis. It is demonstrated that, for a better description of the moments of inertia of nuclei in the transitional region, it is necessary to take the triaxiality into account and perform the three-dimensional angular momentum projection from the triaxial Nilsson $+$ BCS intrinsic wave function.

• Received 21 December 1998

DOI:https://doi.org/10.1103/PhysRevLett.82.3968