Determination of shear forces inside the proton
arXiv:2104.02031
Abstract
We report on the first determination of the shear forces quarks inside the proton from experimental data on deeply virtual Compton scattering. The maximum shear force of approximately 40 MeV/fm occurs near 0.6 fm from the proton center, indicating where confinement forces may be strongest. On the macroscopic scale of the earth surface, this force corresponds to the weight of a mass of about 650 kg. The shear forces in the proton reverse direction at r = 0.45 fm from the center.
arXiv comment4 pages, 4 figures
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- Genuine empirical pressure within the proton
- A bound on the nucleon Druck-term from chiral EFT in curved space-time and mechanical stability conditions
- Effect of the pion field on the distributions of pressure and shear in the proton
- Medium modification of the nucleon mechanical properties: Abel tomography case
- Visualization of internal forces inside the proton in a classical relativistic model