TY  - JOUR
AU  - Gomez Dumm, D.
AU  - Noguera, S.
AU  - Scoccola, N. N.
AU  - Scopetta, S.
PY  - 2014
DA  - 2014//
TI  - Pion distribution amplitude and the pion-photon transition form factor in a nonlocal chiral quark model
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 054031
EP  - 14pp
VL  - 89
IS  - 5
PB  - Amer Physical Soc
AB  - We study the pion distribution amplitude (pi DA) in the context of a nonlocal chiral quark model. The corresponding Lagrangian reproduces the phenomenological values of the pion mass and decay constant, as well as the momentum dependence of the quark propagator obtained in lattice calculations. It is found that the obtained pi DA has two symmetric maxima, which arise from the new contributions generated by the nonlocal character of the interactions. This pi DA is applied to leading order and next-to-leading order calculations of the pion-photon transition form factor. Implications of the results are discussed.
SN  - 1550-7998
UR  - http://arxiv.org/abs/arXiv:1311.3595
UR  - https://doi.org/10.1103/PhysRevD.89.054031
DO  - 10.1103/PhysRevD.89.054031
LA  - English
N1  - WOS:000334304700006
ID  - GomezDumm_etal2014
ER  -