Nucleon form factors and spin content in a quark-diquark model with a pion cloud

Ian C. Cloet, Gerald A. Miller

Published 2012-04-19, updated 2012-04-23Version 2

We propose a new model of the nucleon in which quark-diquark configurations immersed in a pion cloud are treated in a manner consistent with Poincar\'e invariance. With suitably chosen parameters, the computations employing this model reproduce the measured electromagnetic form factors and the quark-spin contribution to the total nucleon angular momentum.