Pseudoscalar form factors of the Δ1232 Δ1232 in Baryon Chiral Perturbation Theory

Özet

The pseudoscalar current-delta transition form factors are calculated in the framework of relativistic baryon chiral perturbation theory including order Oq4Oq​4​​. The complex-mass scheme, which is suitable and well-defined for unstable particles, is taken into account as a renormalization scheme. We discuss the low energy behavior of the pseudoscalar ˜gQ2​g​~​​Q​2​​ and ˜hQ2​h​~​​Q​2​​ form factors and note that the momentum dependence of the form factors is dominated by the pion pole contributions.