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arXiv · 1205.2730

Form factors of radiative pion decays in nonlocal chiral quark models

D. Gomez Dumm·S. Noguera·N. N. Scoccola
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Abstract

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 NJL 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.

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D. Gomez Dumm, S. Noguera, N. N. Scoccola. 2012-05-11. Form factors of radiative pion decays in nonlocal chiral quark models. https://doi.org/10.1103/physrevd.86.074020

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