Proton spin content from skyrmions

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

8 pages

References in corpus (6)

• Measurement of the Spin-Dependent Structure Function $g_1(x)$ of the Proton
• Consistent Analysis of the Spin Content of the Nucleon
• Effective Hadron Dynamics: From Meson Masses to the Proton Spin Puzzle
• Analysis of Data on Polarized Lepton-Nucleon Scattering
• The Nucleon Spin Crisis Bible
• Spin Structure Functions

Cited by in corpus (6)

• Spin Structure of the Proton from Polarized Inclusive Deep-Inelastic Muon-Proton Scattering
• Nucleon-antinucleon Interaction from the Modified Skyrme Model
• Quark scalar, axial, and pseudoscalar charges in the Schwinger-Dyson formalism
• An attractive nucleon-nucleon spin-orbit force from skyrmions with dilatons
• Experimental and Theoretical Evidence for Extended Particle Models
• Spin content from skyrmions with parameters fit to baryon properties