info:eu-repo/semantics/article
Form factors of radiative pion decays in nonlocal chiral quark models
Fecha
2012-10Registro en:
Gomez Dumm, Daniel Alberto; Noguera, S.; Scoccola, Norberto Nerio; Form factors of radiative pion decays in nonlocal chiral quark models; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 86; 7; 10-2012; 1-10
1550-7998
CONICET Digital
CONICET
Autor
Gomez Dumm, Daniel Alberto
Noguera, S.
Scoccola, Norberto Nerio
Resumen
We study the radiative pion decay π +→e +ν eγ 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(q2) and the slope of the axial-vector form factor F A(q2) 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 δ 5 and δ 6, comparing our results with the values obtained in chiral perturbation theory.