Short-distance constraints in hadronic-light-by-light for the muon g − 2

Summary, in English

In this talk recent progress in studying the short-distance properties of the hadronic light-by-light contribution to the muon g−2 is described. The intermediate and short-distance part contributes a large part of the error of the theoretical prediction as described in the white paper [1]. We showed that the massless quark-loop is the first term in a systematic expansion at short-distances, a result already used in [1]. Newer results conclude that both nonperturbative and perturbative corrections are under control. The talk describes these developments and how they fit in the total theoretical prediction for the muon g − 2.

• Author: Johan Bijnens; Nils Hermansson-Truedsson; Antonio Rodríguez Sánchez
• Department/s: Particle and nuclear physics
• Publishing year: 2024-03
• Language: English
• Publication/Series: Proceedings of Science
• Volume: 413
• Document type: Conference paper
• Topic: Subatomic Physics
• Conference name: 10th International Workshop on Chiral Dynamics, CD 2021
• Conference date: 2021-11-15 - 2021-11-19
• Conference place: Virtual, Online
• Status: Published