3 decays

The decay channels considered in this subsection are

and their charge conjugate modes. The symbol l stands for or e. We do not consider electromagnetic corrections and correspondingly set throughout this subsection.

• 3.1 Matrix elements and kinematics
• 3.2 Decay rates
• 3.3 Determination of the form factors
• 3.4 Previous measurements
• 3.5 Theory
• 3.6 Comment on tensor couplings
• 3.7 Improvements at DANE