Valence leading isospin breaking contributions to a_μ^HVP-LO

2025/01/31 by Simone Bacchio, Antonio Evangelista, Bacchio, Simone +15
Computer Science · Physics and Astronomy · #Advanced Data Storage Technologies #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2501.19350

openalex publication_date 2025/01/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

By employing the RM123 approach to QCD+QED, we computed the valence quark-connected isospin-breaking corrections to the light, strange and charm contributions at leading order in α_em and (μ_d-μ_u) / Λ_QCD. Here we report the preliminary results on two different volumes (L ∼ 3.8 fm and L ∼ 5.1 fm) and a fixed lattice spacing (corresponding to a_\text isoQCD ∼ 0.07951(4) fm), obtained in the framework of the ongoing computation by ETMC of the leading-order hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment a_μ^HVP in QCD+QED.

Related

• Isospin-breaking corrections to the muon magnetic anomaly in Lattice QCD
• HVP contribution of the light quarks to the muon (g - 2) including\n isospin-breaking corrections with Twisted-Mass fermions
• Isospin breaking corrections to the HVP at the physical point
• Leading isospin breaking effects in the HVP contribution to a_μ and to the running of α
• QED and strong isospin corrections in the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon