Nucleon electromagnetic form factors with 2+1 flavors of domain wall fermions

Details Nucleon electromagnetic form factors with 2+1 flavors of domain wall fermions Nucleon electromagnetic form factors with 2+1 flavors of domain wall fermions

2010-02-18

arxiv.org/abs/1002.3550v1

PoS(LAT2009)127

Physics

High Energy Physics

High Energy Physics - Lattice

Talk given at the XXVII International Symposium on Lattice Field Theory, Beijing, China, July 26-31, 2009. 8 pages, 9 figures

Scientific paper

We present the recent high-statistics calculations of the nucleon electromagnetic form factors with fully dynamical domain wall fermions on the 32^3x64 lattices generated by the RBC and UKQCD collaborations, with pion masses at roughly 297 MeV, 355 MeV and 403 MeV. We study the phenomenological fits to the momentum transfer dependence of the form factors and investigate chiral extrapolations for the Dirac radius, Pauli radius and the anomalous magnetic moment using two variants of chiral effective field theories, the small scale expansion (SSE) and covariant baryon chiral perturbation theory.

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