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arXiv · hep-ph/9508205

Meson Cloud of the Nucleon in Polarized Semi-Inclusive Deep-Inelastic Scattering

W. Melnitchouk·A. W. Thomas
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Abstract

We investigate the possibility of identifying an explicit pionic component of the nucleon through measurements of polarized $Δ^{++}$ baryon fragments produced in deep-inelastic leptoproduction off polarized protons, which may help to identify the physical mechanism responsible for the breaking of the Gottfried sum rule. The pion-exchange model predicts highly correlated polarizations of the $Δ^{++}$ and target proton, in marked contrast with the competing diquark fragmentation process. Measurement of asymmetries in polarized $Λ$ production may also reveal the presence of a kaon cloud in the nucleon.

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W. Melnitchouk, A. W. Thomas. 1995-08-01. Meson Cloud of the Nucleon in Polarized Semi-Inclusive Deep-Inelastic Scattering. https://doi.org/10.1007/bf01292337

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