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arXiv · 2107.05158

Quark anomalous magnetic moment and its effects on the $ρ$ meson properties

Zanbin Xing·Khépani Raya·Lei Chang
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Abstract

A symmetry-preserving treatment of mesons, within a Dyson-Schwinger and Bethe-Salpeter equations approach, demands an interconnection between the kernels of the quark gap equation and meson Bethe-Salpeter equation. Appealing to those symmetries expressed by the vector and axial-vector Ward-Green-Takahashi identitiges (WGTI), we construct a two-body Bethe-Salpeter kernel and study its implications in the vector channel; particularly, we analyze the structure of the quark-photon vertex, which explicitly develops a vector meson pole in the timelike axis and the quark anomlaous magnetic moment term, as well as a variety of $ρ$ meson properties: mass and decay constants, electromagnetic form factors, and valence-quark distribution amplitudes.

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Zanbin Xing, Khépani Raya, Lei Chang. 2021-07-12. Quark anomalous magnetic moment and its effects on the $ρ$ meson properties. https://doi.org/10.1103/physrevd.104.054038

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