English

Proton spin content from skyrmions

High Energy Physics - Phenomenology 2011-07-19 v1 Nuclear Theory

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±0.14,\Delta\Sigma = 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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Cite

@article{arxiv.hep-ph/9409299,
  title  = {Proton spin content from skyrmions},
  author = {G. Kaelbermann and J. M. Eisenberg and Andreas Schaefer},
  journal= {arXiv preprint arXiv:hep-ph/9409299},
  year   = {2011}
}

Comments

8 pages

R2 v1 2026-07-22T14:22:32.917Z