Proton spin content from skyrmions

Details Proton spin content from skyrmions Proton spin content from skyrmions

1994-09-13

arxiv.org/abs/hep-ph/9409299v1

Phys.Lett.B339:211-214,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages

Scientific paper

10.1016/0370-2693(94)90633-5

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 $\Delta\Sigma = 0.22\pm 0.14,$ 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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