Upper limit onΔT=2,E2transition inTi44

An upper limit of 0.16% (one standard deviation) is placed on the $\ensuremath{\gamma}$-ray branching ratio for the $\ensuremath{\Delta}T=2$ transition from the $T=2, {0}^{+}$ level at 9338 \ifmmode\pm\else\textpm\fi{} 2 keV in $^{44}\mathrm{Ti}$ to the first excited ${2}^{+}$ level at 1083 keV. A new determination of $\frac{{\ensuremath{\Gamma}}_{\ensuremath{\alpha}}{\ensuremath{\Gamma}}_{\ensuremath{\gamma}}}{\ensuremath{\Gamma}}$ for the $T=2$ level gives 0.24 eV. The upper limit for the $\ensuremath{\Delta}T=2$ transition is shown to be consistent with shell-model estimates of isospin mixing.