Trabalho apresentado em evento
Time-like and space-like pion form factors within front-form dynamics
Fecha
2005-05-06Registro en:
AIP Conference Proceedings, v. 768, p. 374-376.
0094-243X
1551-7616
10.1063/1.1932969
WOS:000229780400109
2-s2.0-33749435764
2-s2.0-33749435764.pdf
Autor
Universidade Estadual Paulista (Unesp)
CTA
Sezione Tor Vergata
Sezione Roma i
Resumen
An approach for a unified description of the pion electromagnetic form factor in the space- and time-like regions, within a constituent quark model on the light front is briefly illustrated. Three main ingredients enter our approach: i) the on-shell quark-hadron vertex functions in the valence sector, ii) the dressed photon vertex where a photon decays in a quark-antiquark pair, and iii) the emission and absorption amplitudes of a pion by a quark. © 2005 American Institute of Physics.