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The $s\bar s$ component of the proton and the strangeness magnetic moment

A complete analysis is given of the implications of the empirical indications for a positive strangeness magnetic moment $μ_s$ of the proton on the possible configurations of the $uuds\bar s$ component of the proton. A positive value for $μ_s$ is obtained in the $s\bar s$ configuration where the $uuds$ subsystem is in an orbitally excited state with $[4]_{[FS]}[22]_F[22]_S$ flavor-spin symmetry, which is likely to have the lowest energy. The configurations in which the $\bar s$ is orbitally excited, which include the conventional $K^+Λ^0$ configuration, with exception of that in which the $uuds$ component has spin 2, yield negative values for $μ_s$. The hidden strangeness analogues of recently proposed quark cluster models for the $θ^+$ pentaquark give differing signs for $μ_s$.

preprint2005arXivOpen access

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