The asymptotic $D$- to $S$-state ratio $\eta$ for the $〈d\alpha |{}^6\mathrm{Li}〉$ bound-state overlap is determined from measurements of the tensor analyzing powers for ( ${}^6\overrightarrow{\mathrm{Li}},d$) reactions on medium-heavy targets. The reactions are described by the distorted-wave Born approximation assuming a direct $\alpha$-particle transfer reaction mechanism. The calculations provide good agreement with cross section and vector analyzing power data. A best fit to the tensor analyzing power data results in a new value of $\eta =+0.0003\mathrm{}\pm 0.0009$, much smaller than previous experimental and theoretical determinations.

• Received 17 March 1998

DOI:https://doi.org/10.1103/PhysRevLett.81.1187