%0 Journal Article
%T Pion radiative weak decays in nonlocal chiral quark models
%A Gomez Dumm, D.
%A Noguera, S.
%A Scoccola, N. N.
%J Physics Letters B
%D 2011
%V 698
%N 3
%I Elsevier Science Bv
%@ 0370-2693
%G English
%F GomezDumm_etal2011
%O ISI:000289543700008
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=609), last updated on Thu, 25 Aug 2011 10:53:21 +0000
%X We analyze the radiative pion decay pi(+) -> e(+) nu(e)gamma within nonlocal chiral quark models that include wave function renormalization. In this framework we calculate the vector and axial-vector form factors F-V and F-A at q(2) = 0 – where q(2) is the e(+) nu(e) squared invariant mass – and the slope a of F-V (q(2)) at q(2) -> 0. The calculations are carried out considering different nonlocal form factors, in particular those taken from lattice QCD evaluations, showing a reasonable agreement with the corresponding experimental data. The comparison of our results with those obtained in the (local) NJL model and the relation of F-V and a with the form factor in pi(0) -> gamma*gamma decays are discussed.
%K Nonlocal quark models
%K Pion radiative weak decays
%R 10.1016/j.physletb.2011.03.002
%U http://arxiv.org/abs/arXiv:1011.6403
%U https://doi.org/10.1016/j.physletb.2011.03.002
%P 236-242