Work

On the definition of the nucleon axial charge density

Year: 2026

Type: article

Abstract: We work out the spatial density distributions corresponding to the axial-vector charge density operator for spin-1/2 systems using states described by sharply localized wave packets. The static approximation, leading to the frequently assumed Breit-frame distributions, is also considered. We discuss the interpretation of the resulting spatial densities in terms of the axial charge density.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2026.140263

Authors: J. Yu. Panteleeva, E. Epelbaum, J. Gegelia, U.-G. Meißner

Institutions: Ruhr University Bochum, Tbilisi State University, University of Bonn, Forschungszentrum Jülich, Beihang University

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond