Anomalous Analyzing Powers for Strong ($p_{\mathrm{pol}}$,$t$) Ground-State Transitions and Interference between Direct and ($p$,$d$) ($d$,$t$) Sequential Process

Strong ground-state ($p$,$t$) transitions in nuclei of neutron number ≈ 50-82 are found to show anomalous analyzing powers which cannot be reproduced by direct one-step distorted-wave Born-approximation calculations at all. The anomalies are explained as an interference between ($p$,$d$) ($d$,$t$) sequential processes and the one-step process. The cross section of the sequential processes is as large as that of the one-step process in the $L=0\mathrm{}$ ($p$,$t$) reactions. The neutron-number dependence of the anomalies is interpreted.