Axial form factor of the nucleon in the perturbative chiral quark model
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
We apply the perturbative chiral quark model (PCQM) at one loop to analyze the axial form factor of the nucleon. This chiral quark model is based on an effective Lagrangian, where baryons are described by relativistic valence quarks and a perturbative cloud of Goldstone bosons as dictated by chiral symmetry. We apply the formalism to obtain analytical expressions for the axial form factor of the nucleon, which is given in terms of fundamental parameters of low-energy pion-nucleon physics (weak pion decay constant, strong pion-nucleon form factor) and of only one model parameter (radius of the nucleonic three-quark core).
Keywords
Cite
@article{arxiv.hep-ph/0403119,
title = {Axial form factor of the nucleon in the perturbative chiral quark model},
author = {K. Khosonthongkee and V. E. Lyubovitskij and Th. Gutsche and Amand Faessler and K. Pumsa-ard and S. Cheedket and Y. Yan},
journal= {arXiv preprint arXiv:hep-ph/0403119},
year = {2008}
}
Comments
23 pages, 5 figures, accepted for publication in J. Phys. G