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Nils HT

Nils Hermansson-Truedsson

Affiliated

Nils HT

Constraints on the hadronic light-by-light in the Melnikov-Vainshtein regime

Author

  • Johan Bijnens
  • Nils Hermansson-Truedsson
  • Antonio Rodríguez-Sánchez

Summary, in English

The muon anomalous magnetic moment continues to attract attention due to the possible tension between the experimentally measured value and the theoretical Standard Model prediction. With the aim to reduce the uncertainty on the hadronic light-by-light contribution to the magnetic moment, we derive short-distance constraints in the Melnikov-Vainshtein regime which are useful for data-driven determinations. In this kinematical region, two of the four electromagnetic currents are close in the four-point function defining the hadronic light-by-light tensor. To obtain the constraints, we develop a systematic operator product expansion of the tensor in question to next-to-leading order in the expansion in operators. We evaluate the leading in αs contributions and derive constraints for the next-to-leading operators that are also valid nonperturbatively.

Department/s

  • Theoretical Particle Physics - Has been reorganised
  • Particle and nuclear physics

Publishing year

2023-02

Language

English

Publication/Series

Journal of High Energy Physics

Volume

2023

Issue

2

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Keywords

  • Effective Field Theories of QCD
  • Higher-Order Perturbative Calculations
  • Nonperturbative Effects
  • Precision QED

Status

Published

ISBN/ISSN/Other

  • ISSN: 1029-8479