The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

Short-distance constraints for the HLbL contribution to the muon anomalous magnetic moment

Author

  • Nils Hermansson Truedsson
  • Johan Bijnens
  • Antonio Rodríguez Sánchez

Summary, in English

We derive short-distance constraints for the hadronic light-by-light contribution (HLbL) to the anomalous magnetic moment of the muon in the kinematic region where the three virtual momenta are all large. We include the external soft photon via an external field leading to a well-defined Operator Product Expansion. We establish that the perturbative quark loop gives the leading contribution in a well defined expansion. We compute the first nonzero power correction. It is related to to the magnetic susceptibility of the QCD vacuum. The results can be used as model-independent short-distance constraints for the very many different approaches to the HLbL contribution. Numerically the power correction is found to be small.

Department/s

  • Theoretical Particle Physics - Undergoing reorganization

Publishing year

2019-11-10

Language

English

Publication/Series

Physics Letters B

Volume

798

Document type

Journal article

Publisher

Elsevier

Topic

  • Subatomic Physics

Status

Published

Project

  • Higher Order Calculations for Low Energy Precision Physics

ISBN/ISSN/Other

  • ISSN: 0370-2693