On the pion cloud of the nucleon

  title={On the pion cloud of the nucleon},
  author={H. Hammer and Dieter Drechsel and Ulf-G. Mei\ssner},
We evaluate the two–pion contribution to the nucleon electromagnetic form factors by use of dispersion analysis and chiral perturbation theory. After subtraction of the rho–meson component, we calculate the distributions of charge and magnetization in coordinate space, which can be interpreted as the effects of the pion cloud. We find that the charge distribution of this pion cloud effect peaks at distances of about half a Fermi. Furthermore, we calculate the contribution of the pion cloud to… CONTINUE READING