Strange Electric Form Factor of the Proton

Details Strange Electric Form Factor of the Proton Strange Electric Form Factor of the Proton

2006-01-19

arxiv.org/abs/hep-lat/0601025v2

Phys.Rev.Lett.97:022001,2006

Physics

High Energy Physics

High Energy Physics - Lattice

Manuscript accepted for publicatoin in Phys. Rev. Lett. 4 pages, 5 figures, 1 table

Scientific paper

10.1103/PhysRevLett.97.022001

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 G_E^s(Q^2=0.1 GeV^2) 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 G_M^s, this result considerably constrains the role of hidden flavor in the structure of the nucleon.

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