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arXiv · hep-ph/9409299

Proton spin content from skyrmions

G. Kaelbermann·J. M. Eisenberg·Andreas Schaefer
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Abstract

It is well known that in lowest order the skyrmion model of the nucleon gives vanishing spin content. With new data indicating a proton spin content $ΔΣ= 0.22\pm 0.14,$ it is an increasing challenge to find ways in which the skyrmion can move away from the null result. We show here that a particular term in the skyrmion lagrangian in SU(3) involving six derivatives of the field can, with plausible parameters, yield a spin content consistent with present experiment.

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G. Kaelbermann, J. M. Eisenberg, Andreas Schaefer. 1994-09-13. Proton spin content from skyrmions. https://doi.org/10.1016/0370-2693(94)90633-5

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