PT Journal
AU Gomez Dumm, D
   Noguera, S
   Scoccola, NN
TI Form factors of radiative pion decays in nonlocal chiral quark models
SO Physical Review D
JI Phys. Rev. D
PY 2012
BP 074020
EP 10pp
VL 86
IS 7
DI 10.1103/PhysRevD.86.074020
LA English
AB We study the radiative pion decay pi(+) -> e(+) nu(e)gamma within nonlocal chiral quark models that include wave function renormalization. In this framework we analyze the momentum dependence of the vector form factor F-V(q(2)) and the slope of the axial-vector form factor F-A(q(2)) at threshold. Our results are compared with available experimental information and with the predictions given by the Nambu-Jona-Lasinio model. In addition we calculate the low energy constants l(5) and l(6), comparing our results with the values obtained in chiral perturbation theory.
ER