Essential Strangeness in Nucleon Magnetic Moments
Derek B. Leinweber
Abstract
Effective quark magnetic moments are extracted from experimental measurements as a function of the strangeness magnetic moment of the nucleon. Assumptions made in even the most general quark model analyses are ruled out by this investigation. Ab initio QCD calculations demand a non-trivial role for strange quarks in the nucleon. The effective moments from QCD calculations are reproduced for a strangeness magnetic moment contribution to the proton of 0.11 μN, which corresponds to F2s(0) = -0.33\ μN.
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