AI summary · arXiv: 1810.07589v3 · nucl-th

The pressure distribution and shear forces inside the proton

P. E. Shanahan, W. Detmold
Original paper · DOI 10.1103/physrevlett.122.072003 Submitted to arXiv on 17 Oct. 2018 Phys. Rev. Lett. 122, 072003 (2019) Units corrected on figure axes License: NONEXCLUSIVE-DISTRIB 1.0

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The essentials

  • Authors investigate pressure and shear forces inside the proton using lattice Quantum Chromodynamics (LQCD) calculations
  • First model-independent determination of these fundamental aspects of proton structure
  • Combine LQCD results for gluon contributions with earlier calculations of quark contributions
  • Highlight utility of LQCD calculations in refining knowledge about proton structure
  • Investigate target kinematics for future experiments at Thomas Jefferson National Accelerator Facility and Electron Ion Collider to determine pressure and shear distributions with greater precision
  • Significant implications for advancing understanding of proton structure
  • Provides valuable insights into internal dynamics of protons using LQCD calculations

Key points written by AI: they may contain errors, check them against the paper.

AI-generated keywords: LQCD Proton Structure Pressure Distribution Shear Force Deeply Virtual Compton Scattering

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  • Original abstract
In this study, authors P. E. Shanahan and W. Detmold investigate the distributions of pressure and shear forces inside the proton using lattice Quantum Chromodynamics (LQCD) calculations of the energy momentum tensor. This allows for the first model-independent determination of these fundamental aspects of proton structure. The researchers combine recent LQCD results for the gluon contributions to the energy momentum tensor with earlier calculations of the quark contributions to obtain a comprehensive understanding of the pressure and shear forces within the proton. By exploring and supplementing assumptions made in a recent extraction of the pressure distribution from deeply virtual Compton scattering experiments, they highlight the utility of LQCD calculations in probing and refining our knowledge about proton structure. Furthermore, based on their findings, Shanahan and Detmold investigate target kinematics for future experiments aiming to determine pressure and shear distributions with greater precision at Thomas Jefferson National Accelerator Facility and a potential Electron Ion Collider. These experiments have significant implications for advancing our understanding of proton structure. Overall, this study provides valuable insights into the internal dynamics of protons by utilizing LQCD calculations to determine pressure and shear force distributions. The results contribute to ongoing efforts in unraveling the complex nature of subatomic particles and pave the way for further investigations into their fundamental properties.

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