Pion radii in nonlocal chiral quark model
High Energy Physics - Phenomenology
2009-11-10 v2
Abstract
The electromagnetic radius of the charged pion and the transition radius of the neutral pion are calculated in the framework of the nonlocal chiral quark model. It is shown in this model that the contributions of vector mesons to the pion radii are noticeably suppressed in comparison with a similar contribution in the local Nambu--Jona-Lasinio model. The form-factor for the process gamma*pi+pi- is calculated for the -1 GeV^2<q^2<1.6 GeV^2. Our results are in satisfactory agreement with experimental data.
Cite
@article{arxiv.hep-ph/0311359,
title = {Pion radii in nonlocal chiral quark model},
author = {A. E. Dorokhov and A. E. Radzhabov and M. K. Volkov},
journal= {arXiv preprint arXiv:hep-ph/0311359},
year = {2009}
}
Comments
7 pages, 7 figures