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

Physics Letters B

Shiryo Owa¹  A.W. Thomas¹  X.G. Wang² 

[1] ARC Centre of Excellence for Dark Matter Particle Physics and CSSM, Department of Physics, University of Adelaide, Adelaide SA 5005, Australia;Corresponding author.;

关键词: Cloudy bag model;    Energy momentum tensor;    Pressure distribution;    Shear force;   

DOI  :  

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown