Eur. Phys. J. A 14, 17-21 (2002)
Covariant electroweak nucleon form factors in a chiral constituent-quark modelS. Boffi1, 2, L.Ya. Glozman1, 3, W. Klink4, W. Plessas3, M. Radici1, 2 and R.F. Wagenbrunn1, 3
1 Dipartimento di Fisica Nucleare e Teorica, Università degli Studi di Pavia, I-27100 Pavia, Italy
2 Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, I-27100 Pavia, Italy
3 Institut für Theoretische Physik, Universität Graz, A-8010 Graz, Austria
4 Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242, USA
(Received: 28 February 2002 Communicated by V.V. Anisovich)
Results for the proton and neutron electric and magnetic form factors as well as the nucleon axial and induced pseudoscalar form factors are presented for the chiral constituent-quark model based on Goldstone-boson exchange dynamics. The calculations are performed in a covariant framework using the point-form approach to relativistic quantum mechanics. The direct predictions of the model yield a remarkably consistent picture of the electroweak nucleon structure.
12.39.-x - Phenomenological quark models.
13.10.+q - Weak and electromagnetic interactions of leptons.
14.20.Dh - Protons and neutrons.
© Società Italiana di Fisica, Springer-Verlag 2002