Quantifying the nucleon's pion cloud with transverse charge densities

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 using a dispersion representation of the form factor and discuss its partonic interpretation. The non-chiral core is dominant up to surprisingly large distances ~2 fm. The chiral component can be probed in precision low-Q^2 elastic eN scattering or in peripheral deep-inelastic processes which resolve its quark/gluon content.

4 pages, 3 figures. Added references, expanded comments on related approaches (Breit frame, dispersion analysis).

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Cited by in corpus (22)

• Hadron tomography by generalized distribution amplitudes in pion-pair production process ${\gamma }^{\ast }\gamma \to {\pi }^0{\pi }^0$ and gravitational form factors for pion
• Realistic Transverse Images of the Proton Charge and Magnetic Densities
• Pion momentum distributions in the nucleon in chiral effective theory
• Chiral dynamics and peripheral transverse densities
• Pion transverse charge density from timelike form factor data
• A spectral representation for baryon to meson transition distribution amplitudes
• Broken Chiral Symmetry on a Null Plane
• Peripheral transverse densities of the baryon octet from chiral effective field theory and dispersion analysis
• Chiral Light Front Perturbation Theory and the Flavor Dependence of the Light-Quark Nucleon Sea
• Realizing vector meson dominance with transverse charge densities
• Systematic study of octet-baryon electromagnetic form factors in covariant chiral perturbation theory
• Light-front representation of chiral dynamics with Delta isobar and large-N_c relations
• Pion transverse charge density and the edge of hadrons
• High--Energy Photon--Hadron Scattering in Holographic QCD
• Partonic angular momentum in the nucleon's chiral periphery
• Quantum-mechanical picture of peripheral chiral dynamics
• Transverse charge and current densities in the nucleon from dispersively improved chiral effective field theory
• Pions in Proton Structure and Everywhere Else
• Two-dimensional charge distributions of the $\Delta$ baryon: Interpolation between the nonrelativistic and ultrarelativistic limit
• Kaon transverse charge density from space- and timelike data
• Light-front dynamic analysis of the longitudinal charge density using the solvable scalar field model in (1+1) dimensions
• Transverse charge and magnetization densities in the nucleon's chiral periphery