The selection rule in (d, α) reactions leading to 0+ antianalogue states in odd-odd nuclei

We point out that, in many cases, anti-analogue 0⁺ states cannot be populated in )d, α) reactions. This results from the particular isospin structure of the anti-analogue, and may well be new, useful, tool to aid in the identification of such states. A particular example arising in the ⁴² Ca (d, α) reaction is generalized in a straightforward way.