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 decays of spin ½ neutral hyperons are calculated by analytical means and compared with those previously obtained for the charged hyperon semileptonic decay. The completely integrated expressions are very accurate and include all the terms of the order $\alpha$ times the momentum transfer. The final results are appropriate for a model-independent experimental analysis and are suitable for high statistics decays of ordinary or heavy-quark baryons.