2021/12/31 by Martin Hoferichter, T. Teubner, Thomas Teubner
Physics and Astronomy · #Anomalous magnetic dipole moment #Fermilab #Hadron #High-Energy Particle Collisions Research #Moment (physics) #Muon #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Polarization (electrochemistry) #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Scattering #Vacuum polarization #hep-ex #hep-lat #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevlett.128.112002
published as Phys. Rev. Lett. 128, 112002 (2022) · 7 pages, 2 figures
openalex publication_date 2022/03/14 · arxiv created 2022/03/18 · arxiv updated 2022/03/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Higher-order hadronic corrections to the anomalous magnetic moment of the muon have been evaluated including next-to-next-to-leading-order insertions of hadronic vacuum polarization and next-to-leading-order corrections to hadronic light-by-light scattering. This leaves a set of mixed leptonic and hadronic corrections in the form of double-bubble topologies as the only remaining hadronic effect at \mathcal O(α4). Here, we estimate these contributions by analyzing the respective cuts of the diagrams, suggesting that the impact is limited to \lesssim 1× 10-11 and thus negligible at the level of the final precision of the Fermilab g-2 experiment.