Improved Evaluation of the Electroweak Contribution to Muon g-2

Autor(en)

Martin Hoferichter, Jan Lüdtke, Luca Naterop, Massimiliano Procura, Peter Stoffer

Abstrakt

A precise evaluation of the electroweak contribution to the anomalous magnetic moment of the muon requires control over all aspects of the standard model, ranging from Higgs physics, over multiloop computations for bosonic and (heavy-)fermion diagrams, to nonperturbative effects in the presence of light quarks. Currently, the dominant uncertainties arise from such hadronic effects in the vector-vector-axial-vector three-point function, an improved understanding of which has recently emerged in the context of hadronic light-by-light scattering. Profiting from these developments as well as new perturbative and nonperturbative input for the charm contribution, we obtain aμEW=154.4(4)×10-11.

Organisation(en)

Fakultät für Physik, Teilchenphysik

Externe Organisation(en)

Universität Bern, Paul Scherrer Institute, Universität Zürich (UZH)

Journal

Physical review letters

Band

134

Anzahl der Seiten

8

ISSN

0031-9007

DOI

https://doi.org/10.48550/arXiv.2503.04883

Publikationsdatum

05-2025

Peer-reviewed

Ja

ÖFOS 2012

103012 Hochenergiephysik

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/7aca8f1d-65c2-48bb-8dd6-0afcb23c917c