Strange Electric Form Factor of the Proton

D. B. Leinweber, S. Boinepalli, A. W. Thomas, P. Wang, A. G. Williams, R. D. Young, J. M. Zanotti, and J. B. Zhang
Phys. Rev. Lett. 97, 022001 – Published 10 July 2006

Abstract

By combining the constraints of charge symmetry with new chiral extrapolation techniques and recent low-mass quenched lattice QCD simulations of the individual quark contributions to the electric charge radii of the baryon octet, we obtain an accurate determination of the strange electric charge radius of the proton. While this analysis provides a value for GEs(Q2=0.1GeV2) in agreement with the best current data, the theoretical error is comparable with that expected from future HAPPEX results from JLab. Together with the earlier determination of GMs, this result considerably constrains the role of hidden flavor in the structure of the nucleon.

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  • Received 20 January 2006

DOI:https://doi.org/10.1103/PhysRevLett.97.022001

©2006 American Physical Society

Authors & Affiliations

D. B. Leinweber1, S. Boinepalli1, A. W. Thomas1,2, P. Wang1, A. G. Williams1, R. D. Young1,2, J. M. Zanotti1,3, and J. B. Zhang1

  • 1Special Research Centre for the Subatomic Structure of Matter, and Department of Physics, University of Adelaide, Adelaide SA 5005, Australia
  • 2Jefferson Laboratory, 12000 Jefferson Avenue, Newport News, Virginia 23606 USA
  • 3School of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom

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Issue

Vol. 97, Iss. 2 — 14 July 2006

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