Pressure Distribution and Shear Forces inside the Proton
Name
PhysRevLett.122.072003.pdf
Size
1.17 MB
Format
Adobe PDF
Checksum (MD5)
117fc1d97e5eddeaf79b947d6ceccc88
Author(s)
Shanahan, Phiala E
Detmold, William
Date Issued
February 2019
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Shanahan, P. E. and W. Detmold. "Pressure Distribution and Shear Forces inside the Proton." Physical Review Letters 122, 7 (February 2019): 072003 © 2019 American Physical Society
Version
Final published version
Abstract
The distributions of pressure and shear forces inside the proton are investigated using lattice quantum chromodynamics (LQCD) calculations of the energy momentum tensor, allowing the first model-independent determination of these fundamental aspects of proton structure. This is achieved by combining recent LQCD results for the gluon contributions to the energy momentum tensor with earlier calculations of the quark contributions. The utility of LQCD calculations in exploring, and supplementing, the assumptions in a recent extraction of the pressure distribution in the proton from deeply virtual Compton scattering is also discussed. Based on this study, the target kinematics for experiments aiming to determine the pressure and shear distributions with greater precision at Thomas Jefferson National Accelerator Facility and a future electron ion collider are investigated.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.122.072003
