Longitudinal short-distance constraints for the hadronic light-by-light contribution to (g − 2)μ with large-Nc Regge models

• Published in: The journal of high energy physics Vol. 2020; no. 3
• Main Authors: Colangelo, Gilberto, Hagelstein, Franziska, Hoferichter, Martin, Laub, Laetitia, Stoffer, Peter
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 17.03.2020; Springer Nature B.V; Springer Nature
• Subjects: Charm (particle physics); Classical and Quantum Gravitation; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Constraints; Elementary Particles; Experiments; Form factors; High energy physics; Light; Magnetic moments; Mathematical analysis; Phenomenology; Physics; Physics and Astronomy; Quantum chromodynamics; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Quarks; Regular Article - Theoretical Physics; Relativity Theory; String Theory; Tensors; Precision QED; Chiral Lagrangians; Effective Field Theories; Nonperturbative Effects

A bstract While the low-energy part of the hadronic light-by-light (HLbL) tensor can be constrained from data using dispersion relations, for a full evaluation of its contribution to the anomalous magnetic moment of the muon ( g − 2) μ also mixed- and high-energy regions need to be estimated. Both c...