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Effect of the pion field on the distributions of pressure and shear in the proton
oleh: Shiryo Owa, A.W. Thomas, X.G. Wang
Format: | Article |
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Diterbitkan: | Elsevier 2022-06-01 |
Deskripsi
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.