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Hadronic contributions to $(g-2)$ of the leptons and to the effective fine structure constant $α(M_Z^2)$

S. Eidelman, F. Jegerlehner

Abstract

The hadronic contributions to the anomalous magnetic moments of the leptons and to the effective fine structure constant at the Z-mass are reevaluated using all presently available $e^+ e^-$ data.

Hadronic contributions to $(g-2)$ of the leptons and to the effective fine structure constant $α(M_Z^2)$

Abstract

The hadronic contributions to the anomalous magnetic moments of the leptons and to the effective fine structure constant at the Z-mass are reevaluated using all presently available data.

Paper Structure

This paper contains 10 sections, 50 equations, 6 figures.

Table of Contents

  1. Introduction
  2. Hadronic contributions to the anomalous magnetic moments of the leptons
  3. Hadronic contributions to the running of the effective fine structure constant
  4. Evaluation of the dispersion integral
  5. Resonances
  6. The $\pi^+ \pi^-$ threshold region
  7. Estimate of the error
  8. The $e^+e^-$ data and the origin of systematic errors
  9. Results
  10. Summary and outlook

Figures (6)

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