Nonyrast high-spin states in $N=Z{\hspace{0.5em}}^{44}\mathrm{Ti}$

High-spin states have been investigated in the $N=Z=22\mathrm{}$ nucleus ${}^{44}\mathrm{Ti}.$ A newly observed set of states with $J^{\pi }{=6\mathrm{}}^{+},$ $8^{+},$ ${10}^{+},$ and ${12}^{+}$ are assigned to be members of a band built upon an excited $0^{+}$ state. This band displays rotational-like level spacings, with a near-linear $J(J+1\mathrm{})\mathrm{}$ dependence. A third set of $J^{\pi }{=8\mathrm{}}^{+},$ ${10}^{+},$ and ${12}^{+}$ states have also been tentatively assigned and a negative-parity intruder band has been extended to $J^{\pi }{=13\mathrm{}}^{-}.$ Comparisons with $\mathrm{df}$-shell model calculations show a good agreement for both energy levels and branching ratios. These calculations indicate that the excited $0^{+}$ band is dominated by a mixture of $8p–4h$ and $6p–2h$ configurations relative to ${}^{40}\mathrm{Ca}.$