Using baryon octet magnetic moments and masses to fix the pion cloud contribution

Abstract

Using SU(3) symmetry to constrain the pion BB' couplings, assuming SU(3) breaking comes only from one-loop pion cloud contributions, and using the the covariant spectator theory to describe the photon coupling to the quark core, we show how the experimental masses and magnetic moments of the baryon octet can be used to set a model independent constraint on the strength of the pion cloud contributions to the octet, and hence the nucleon, form factors at Q2=0.

7 pages, 1 figure

References in corpus (4)

• A pure S-wave covariant model for the nucleon
• A relativistic quark model for the Omega- electromagnetic form factors
• Fixed-axis polarization states: covariance and comparisons
• Current quark mass dependence of nucleon magnetic moments and radii

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