Precision radiative corrections to the semileptonic Dalitz plot with angular correlation between polarized decaying and emitted baryons: Effects of the four-body region

Analytical radiative corrections of order $(\alpha /\pi )(q/M_1)$ are calculated for the four-body region of the Dalitz plot of baryon semileptonic decays when the ${\widehat{\mathbf{s}}}_1·{\widehat{\mathbf{p}}}_2$ correlation is present. Once the final result is available, it is possible to exhibit it in terms of the corresponding final result of the three-body region following a set of simple changes in the latter. We cover two cases, a charged and a neutral polarized decaying baryon.