Journal
PHYSICS LETTERS B
Volume 829, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2022.137136
Keywords
Cloudy bag model; Energy momentum tensor; Pressure distribution; Shear force
Funding
- University of Adelaide [CE200100008, DP180100497]
- Australian Research Council through the Centre of Excellence for Dark Matter Particle Physics
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In this study, the pressure and shear distributions in the proton are calculated using a model with confined quarks supplemented by the pion field required by chiral symmetry. The incorporation of the pion contributions explains the long-range distributions, which are in agreement with experimentally extracted quark contributions. The results of the model are also compared with lattice QCD results at unphysically large quark mass.
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. (C) 2022 The Author(s). Published by Elsevier B.V.
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