Strange vector currents and the OZI-rule
Ulf-G. Meißner, V. Mull, J. Speth, J. W. van Orden
Abstract
We investigate the role of correlated πρ exchange in the extraction of matrix elements of the strange vector current in the proton. We show that a realistic isoscalar spectral function including this effect leads to sizeably reduced strange vector form factors based on the dispersion--theoretical analysis of the nucleons' electromagnetic form factors.
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