QED and strong isospin corrections in the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2022

QED and strong isospin corrections in the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon

Sz. Borsanyi
  • Fonction : Auteur
Zoltan Fodor
  • Fonction : Auteur
Christian Hoelbling
  • Fonction : Auteur
Sandor D. Katz
  • Fonction : Auteur
Thomas Lippert
  • Fonction : Auteur
Kalman Szabo
  • Fonction : Auteur
Finn Stokes
  • Fonction : Auteur
Balint C. Toth
  • Fonction : Auteur
Cs. Torok
  • Fonction : Auteur

Résumé

Recently, the Budapest-Marseille-Wuppertal collaboration achieved sub-percent precision in the evaluation of the lowest-order hadronic vacuum polarization contribution to the muon $g_\mu-2$. At this level of precision, isospin-symmetric QCD is not sufficient. In this contribution we review how QED and strong-isospin-breaking effects have been included in our work. Isospin breaking is implemented by expanding the relevant correlation functions to second order in the electric charge $e$ and to first order in $m_u-m_d$. The correction terms are then computed using isospin-symmetric configurations. The choice of this approach allows us to better distribute the available computing resources among the various contributions.

Dates et versions

hal-03590981 , version 1 (28-02-2022)

Identifiants

Citer

Letizia Parato, Sz. Borsanyi, Zoltan Fodor, J.N. Guenther, Christian Hoelbling, et al.. QED and strong isospin corrections in the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon. 38th International Symposium on Lattice Field Theory, Jul 2021, Online, United States. pp.358, ⟨10.22323/1.396.0358⟩. ⟨hal-03590981⟩
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