Quantifying the nucleon's pion cloud with transverse charge densities

M. Strikman, C. Weiss

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Abstract

The transverse densities in a fast-moving nucleon offer a model-independent framework for analyzing the spatial structure of the pion cloud and its role in current matrix elements. We calculate the chiral large-distance component of the charge density in a dispersion representation of the form factor and discuss its partonic interpretation. It dominates over the nonchiral density only at surprisingly large distances above ~2 fm. The chiral component can be probed in precision low-Q2 elastic eN scattering or in peripheral deep-inelastic processes that resolve its quark/gluon content.

Original languageEnglish (US)
Article number042201
JournalPhysical Review C - Nuclear Physics
Volume82
Issue number4
DOIs
Publication statusPublished - Jan 1 2010

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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