Weak pion production off the nucleon
Weak pion production off the nucleon
We develop a model for the weak pion production off the nucleon, which besides the Delta pole mechanism (weak excitation of the $Δ(1232)$ resonance and its subsequent decay into $Nπ$), includes also some background terms required by chiral symmetry. We re-fit the $C_5^A(q^2)$ form factor to the flux averaged $ν_μp …