Work

Light-by-light contribution to the muon g − 2 within the nonlocal chiral quark model with vector and axial-vector mesons

Year: 2025

Type: article

Abstract: The hadronic light-by-light contribution to the muon anomalous magnetic moment is calculated in the framework of a nonlocal quark model with scalar-pseudoscalar and vector–axial-vector channels. The effect of the dressing of internal photons by vector mesons is found to be tiny. As a result, the contribution from the nonstrange quark loop is a μ HLbL , Loop = ( 93 ± 9.9 ) × 10 − 11 . The total value, including meson exchanges and the contribution of strange particles, is a μ HLbL = ( 154 ± 12.4 ) × 10 − 11 .

Source: Physical review. D/Physical review. D.

DOI: 10.1103/y64b-5tfj

Authors: A. E. Radzhabov, A. S. Zhevlakov

Institutions: Institute for System Dynamics and Control Theory, Joint Institute for Nuclear Research

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: Russian Science Foundation

Award: G3059456787