Kinematics of Kl3 Decay Amplitudes and Relativiatic Equations for Spin-Zero Particles

摘要

The standard S-matrix kinematic analysis is applied to the K3 decays to show that the form factors f (t) are free of kinematic singularities or constraints. The general form of the matrix elements of the vector current and its divergence in the Duffin-Kemmer formalism are determined and shown to be consistent with the general kinematic analysis.