de Paula, W.
Alvarenga Nogueira, J. H.
[1, 2, 3]
Total Authors: 5
 Inst Tecnol Aeronaut, DCTA, BR-12228900 Sao Jose Dos Campos - Brazil
 Ist Nazl Fis Nucl, Sez Roma, Piazzale A Moro 2, I-00185 Rome - Italy
 Rome Univ La Sapienza, Phys Dept, Piazzale A Moro 2, I-00185 Rome - Italy
Total Affiliations: 3
Physics Letters B;
SEP 10 2021.
Web of Science Citations:
The pion electromagnetic form factor has been calculated for the first time from the solutions of the Bethe-Salpeter equation, obtained directly in Minkowski space by using the Nakanishi integral representation of the Bethe-Salpeter amplitude. The one-gluon exchange kernel contains as inputs the quark and gluon masses, as well as a scale parameter featuring the extended quark-gluon vertex. The range of variability of these parameters is suggested by lattice calculations. After presenting a very successful comparison with the existing data in the whole range of the momentum transfer, we show how inserting the light-front (LF) formalism in our approach allows to achieve further interesting results, like the evaluation of the LF valence form factor and a first investigation of the end-points effects. (C) 2021 Published by Elsevier B.V. (AU)