Radiative Corrections to K⁰ₗ₃ Decays

الأصل · EN

We calculate the long-distance radiative corrections δᵉLD and δμLD to the K⁰ -> π- e+ νₑ and the K⁰ -> pi- μ+ νμ decay rates. This analysis includes contributions to the long-distance radiative corrections from outside the kinematically-allowed three-body Dalitz region and tests the sensitivity of the radiative corrections to the hadronic K-pi form factors. A program, KLOR, was written to numerically evaluate the radiative corrections and to generate Monte Carlo events for experimental acceptance studies. The K⁰ₑ₃ and the K⁰μ₃ long-distance radiative correction parameters are determined to be (1.3 +/- 0.3)% and (1.9 +/- 0.3)%, respectively. We also present predictions for the fraction of radiative K⁰ₗ₃ events satisfying various requirements on final-state photon kinematics.