Lattice Results on the Connected Neutron Charge Radius

Details Lattice Results on the Connected Neutron Charge Radius Lattice Results on the Connected Neutron Charge Radius

2003-07-05

arxiv.org/abs/hep-lat/0307006v2

Phys.Rev. D68 (2003) 094503

Physics

High Energy Physics

High Energy Physics - Lattice

20 pages, 4 figures; closer to journal version

Scientific paper

10.1103/PhysRevD.68.094503

We describe a calculation using quenched lattice QCD of the connected part of the neutron electric form factor for momentum transfers in the range $0.3 {\rm GeV^2} \stackrel{<}{\sim} -q^2 \stackrel{<}{\sim} 1.0 {\rm GeV^2}$. We extract the implied charge radius using a Galster parameterization and consider various ways of extrapolating the neutron charge radius value to the chiral limit. We find that the measured charge radii may be reconciled to experiment by standard phenomenology and lowest or next to lowest order contributions from chiral perturbation theory.

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