Moore–Witten conjecture for SU(2) Donaldson invariants of CP^2

Consider the complex projective plane $\mathbb{C}\mathrm{P}^2$ with gauge group $\mathrm{SU}(2)$. Its regularized $u$-plane integral has a contribution from the cusp at $\tau=\infty$. Moore–Witten conjecture for $\mathbb{C}\mathrm{P}^2$. The contribution from the cusp at $\tau=\infty$ to the regularized $u$-plane integral of $\mathbb{C}\mathrm{P}^2$ for the gauge group $\mathrm{SU}(2)$ is equal to the generating function for the $\mathrm{SU}(2)$-Donaldson invariants of $\mathbb{C}\mathrm{P}^2$. The source explicitly identifies this as the remaining open case of the broader Moore–Witten conjecture.