Small-Angle Tensor Analyzing Power of (d,p) Reactions and DeuteronD-State Effects

The tensor analyzing power of ($d,p$) transitions on ${}_{}{}^9{}_{}{}^{}\mathrm{Be}$, ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$, ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{19}{}_{}{}^{}\mathrm{F}$, ${}_{}{}^{25}{}_{}{}^{}\mathrm{Mg}$, ${}_{}{}^{28}{}_{}{}^{}\mathrm{Si}$, and ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$ was measured at $E_d=12.3\mathrm{}$ MeV for ${\theta }_{\mathrm{lab}}=0-{50}^{\circ }$. The reactions studied included orbital angular-momentum transfers $l=0,1,2,3\mathrm{}$. Large values of $T_{20}$ were observed, negative near 0° for most transitions. Distorted-wave calculations show agreement with the data only when a $D$-state contribution is included in the deuteron internal wave function.