Test of X(5) for theγdegree of freedom

We present the first extensive test of the critical point symmetry X(5) for the $\gamma$ degree of freedom, based in part on recent measurements for the $\gamma$ band in ${}^{152}\mathrm{Sm}$. The agreement is good for some observables including the energies and most intraband and interband transitions, but there is also a serious discrepancy for one transition.