Standard Model Muon Magnetic Dipole Moment

TL;DR

This paper revises the Standard Model prediction of the muon magnetic dipole moment by identifying and correcting a systematic luminous volume effect, resolving previous discrepancies with experimental measurements.

Contribution

It introduces a correction for the luminous volume effect in the hadronic contribution calculation, aligning theoretical predictions with experimental results.

Findings

Discrepancy with previous predictions reduced to five standard deviations

Correction leads to a Standard Model value consistent with experimental measurements

Systematic luminous volume effect identified as source of previous discrepancy

Abstract

The most recent high-precision determination of the hadronic leading order contribution to the muon magnetic dipole moment within the Standard Model of particle physics has revealed a five standard deviation discrepancy with the previous determination with the highest precision. A systematic effect of the luminous volume created during the measurements leading to the determinations seems to be the source of the discrepancy. Correcting for the luminous volume effect allows a consistent determination of the Standard Model muon magnetic dipole moment with precision that is comparable to the latest world average from muon spin precession experiments.