Proton spin content from skyrmions

G. Kälbermann; J. M. Eisenberg; Andreas Schäfer

doi:10.1016/0370-2693(94)90633-5

Proton spin content from skyrmions

G. Kälbermann^*
, J. M. Eisenberg
, Andreas Schäfer

^*Corresponding author for this work

Department of Soil and Water Sciences

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

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 Δ∑ = 0.22 ± 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.

Original language	English
Pages (from-to)	211-214
Number of pages	4
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	339
Issue number	3
DOIs	https://doi.org/10.1016/0370-2693(94)90633-5
State	Published - 17 Nov 1994

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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 Δ∑ = 0.22 ± 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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AU - Schäfer, Andreas

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N2 - 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 Δ∑ = 0.22 ± 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.

AB - 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 Δ∑ = 0.22 ± 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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JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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Proton spin content from skyrmions

Abstract

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