Effect of the pion field on the distributions of pressure and shear in the proton
Centre Authors: Owa, S., Thomas, A. W., Wang, X.
In light of recent experimental progress in determining the pressure and shear distributions in the proton, these quantities are calculated in a model with confined quarks supplemented by the pion field required by chiral symmetry. The incorporation of the pion contributions is shown to account for the long-range distributions, in general agreement with the experimentally extracted quark contributions. The results of the model are also compared with lattice QCD results at unphysically large quark mass.
Published: Apr, 2022