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arXiv · hep-ph/9311330

Flavor symmetry breaking in quark magnetic moments

Johan Linde·Håkan Snellman
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Abstract

We discuss the magnetic moments of the baryons allowing for flavor symmetry breaking in the quark magnetic moments. We show that there is a correlation between isospin symmetry breaking and data for the nucleon spin structure obtained from deep inelastic scattering. For small values of the isospin symmetry breaking, of the order of $5\%$, the magnetic moments and weak axial-vector form factors alone indicate a value of the spin polarization $ΔΣ\leq 0.20$. Larger values of the spin polarization are compatible only with large isospin symmetry breaking. We also calculate weak axial-vector form factors, which are independent of the symmetry breakings, from magnetic moment data and find good agreement with experiment.

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Johan Linde, Håkan Snellman. 1994-06-15. Flavor symmetry breaking in quark magnetic moments. https://doi.org/10.1007/bf01557236

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