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.
Cite
@article{arxiv.2104.02031,
title = {Determination of shear forces inside the proton},
author = {V. D. Burkert and L. Elouadrhiri and F. X. Girod},
journal= {arXiv preprint arXiv:2104.02031},
year = {2021}
}