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arXiv · 2106.00929

Effect of the pion field on the distributions of pressure and shear in the proton

Shiryo Owa·A. W. Thomas·X. G. Wang
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Abstract

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.

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Shiryo Owa, A. W. Thomas, X. G. Wang. 2021-06-02. Effect of the pion field on the distributions of pressure and shear in the proton. https://doi.org/10.1016/j.physletb.2022.137136

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