IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
The pion distribution amplitude and the pion-photon transition form factor in a nonlocal chiral quark model
Autor/es:
DANIEL GOMEZ DUMM; SANTIAGO NOGUERA; NORBERTO N. SCOCCOLA; SERGIO SCOPETTA
Revista:
PHYSICAL REVIEW D
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2014 vol. 89 p. 5403101 - 5403114
ISSN:
1550-7998
Resumen:
We study the pion Distribution Amplitude (piDA) 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 latticecalculations. It is found that the obtained piDA has two symmetric maxima, which arise from the new contributions generated by the nonlocal character of the interactions. This piDA is applied to leading order and next-to-leading order calculations of the pion-photon transition form factor. Implications of the results are discussed.