TY  - JOUR
AU  - Gomez Dumm, D.
AU  - Noguera, S.
AU  - Scoccola, N. N.
PY  - 2011
DA  - 2011//
TI  - Pion radiative weak decays in nonlocal chiral quark models
T2  - Phys. Lett. B
JO  - Physics Letters B
SP  - 236
EP  - 242
VL  - 698
IS  - 3
PB  - Elsevier Science Bv
KW  - Nonlocal quark models
KW  - Pion radiative weak decays
AB  - 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.
SN  - 0370-2693
UR  - http://arxiv.org/abs/arXiv:1011.6403
UR  - https://doi.org/10.1016/j.physletb.2011.03.002
DO  - 10.1016/j.physletb.2011.03.002
LA  - English
N1  - ISI:000289543700008
ID  - GomezDumm_etal2011
ER  -