Isospin violation in the vector form factors of the nucleon

Details Isospin violation in the vector form factors of the nucleon Isospin violation in the vector form factors of the nucleon

2006-05-02

arxiv.org/abs/nucl-th/0605006v1

Phys.Rev.C74:015204,2006

Physics

Nuclear Physics

Nuclear Theory

13 pages, 8 figures, uses RevTeX

Scientific paper

10.1103/PhysRevC.74.015204

A quantitative understanding of isospin violation is an increasingly important ingredient for the extraction of the nucleon's strange vector form factors from experimental data. We calculate the isospin violating electric and magnetic form factors in chiral perturbation theory to leading and next-to-leading order respectively, and we extract the low-energy constants from resonance saturation. Uncertainties are dominated largely by limitations in the current knowledge of some vector meson couplings. The resulting bounds on isospin violation are sufficiently precise to be of value to on-going experimental studies of the strange form factors.

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