caa a22 4500 465800890 CHVBK 20180323112052.0 cr unu---uuuuu 170327e19901201xx s 000 0 eng 10.1007/BF01294118 doi (NATIONALLICENCE)springer-10.1007/BF01294118 Form factors in the projected linear chiral sigma model [Elektronische Daten] [P. Alberto, E. Arriola, M. Fiolhais, K. Goeke, F. Grümmer, J. Urbano] Several nucleon form factors are computed within the framework of the linear chiral soliton model. To this end variational means and projection techniques applied to generalized hedgehog quark-boson Fock states are used. In this procedure the Goldberger-Treiman relation and a virial theorem for the pion-nucleon form factor are well fulfilled demonstrating the consistency of the treatment. Both proton and neutron charge form factors are correctly reproduced, as well as the proton magnetic one. The shapes of the neutron magnetic and of the axial form factors are good but their absolute values at the origin are too large. The slopes of all the form factors at zero momentum transfer are in good agreement with the experimental data. The pion-nucleon form factor exhibits to great extent a monopole shape with a cut-off mass ofΛ=690 MeV. Electromagnetic form factors for the vertexγNΔ and the nucleon spin distribution are also evaluated and discussed. Springer-Verlag, 1990 12.35.Ht nationallicence Alberto P. Departamento de Física and Centro de Física Teórica (INIC), Universidade de Coimbra, Portugal aut Arriola E. Institut für Theoretische Physik II, Ruhr-Universität Bochum, Germany aut Fiolhais M. Departamento de Física and Centro de Física Teórica (INIC), Universidade de Coimbra, Portugal aut Goeke K. Institut für Kernphysik, Kernforschungsanlage Jülich GmbH, Germany aut Grümmer F. Institut für Kernphysik, Kernforschungsanlage Jülich GmbH, Germany aut Urbano J. Departamento de Física and Centro de Física Teórica (INIC), Universidade de Coimbra, Portugal aut Zeitschrift für Physik A Atomic Nuclei Springer-Verlag 336/4(1990-12-01), 449-460 0939-7922 336:4<449 1990 336 218 https://doi.org/10.1007/BF01294118 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01294118 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alberto P. Departamento de Física and Centro de Física Teórica (INIC), Universidade de Coimbra, Portugal aut NATIONALLICENCE 700 1- Arriola E. Institut für Theoretische Physik II, Ruhr-Universität Bochum, Germany aut NATIONALLICENCE 700 1- Fiolhais M. Departamento de Física and Centro de Física Teórica (INIC), Universidade de Coimbra, Portugal aut NATIONALLICENCE 700 1- Goeke K. Institut für Kernphysik, Kernforschungsanlage Jülich GmbH, Germany aut NATIONALLICENCE 700 1- Grümmer F. Institut für Kernphysik, Kernforschungsanlage Jülich GmbH, Germany aut NATIONALLICENCE 700 1- Urbano J. Departamento de Física and Centro de Física Teórica (INIC), Universidade de Coimbra, Portugal aut NATIONALLICENCE 773 0- Zeitschrift für Physik A Atomic Nuclei Springer-Verlag 336/4(1990-12-01), 449-460 0939-7922 336:4<449 1990 336 218 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer