Nucleon-nucleon charge symmetry breaking and the dd ---> alpha pi0 reaction

We show that using parameters consistent with the charge symmetry violating difference between the strong $\mathit{nn}$ and $\mathit{pp}$ scattering lengths provides significant constraints on the calculated amplitude for the $\mathit{dd}\ensuremath{\rightarrow}\ensuremath{\alpha}{\ensuremath{\pi}}^{0}$ reaction.

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