Orateur
Dr
Wilson Roberto Barbosa de Araújo
(Secretaria da Educação do Estado de São Paulo (SEDUC), DE Norte 2)
Description
In this work we study the effect of scalar spin coupling of constituent quarks on nucleon electroweak properties by introducing a two momentum scales wave function. By comparing the one scale wave function and the two scales wave function models, we found that the last case has shown a reasonable description of static observables and of the ratio µpGEp/GMp in which the value of the zero of G_Ep appears at squared momentum transfer of about 15GeV^2. We have also shown results for the axial coupling gA and Axial Nucleon form factor. The best result for gA was obtained when the parameters of the nucleon wave function model were such that the experimental value of the neutron magnetic moment is reproduced.
Auteurs principaux
Dr
Wilson Roberto Barbosa de Araújo
(Secretaria da Educação do Estado de São Paulo (SEDUC), DE Norte 2)
Edson SUISSO
(Instituto Nacional da Propriedade Industrial)
João Pacheco de Melo
(Laboratório de Física Teórica e Computacional - UCS - UNICID)
Prof.
Tobias Frederico
Kazuo Tsushima
