HIGH-PRECISION RADIATIVE-CORRECTIONS TO THE DALITZ PLOT IN THE SEMILEPTONIC DECAYS OF NEUTRAL HYPERONS

The radiative corrections to the Dalitz plot in the semileptonic decay s of spin 1/2 neutral hyperons are calculated by analytical means and compared with those previously obtained for the charged hyperon semile ptonic decay. The completely integrated expressions are very accurate and include all the terms of the order alpha times the momentum transf er. The final results are appropriate for a model-independent experime ntal analysis and are suitable for high statistics decays of ordinary or heavy-quark baryons.