• DOI:10.1103/PhysRevD.104.114036
• Corpus ID: 237490389

Novel evaluation of the hadronic contribution to the muon’s g−2 from QCD

@article{Frasca2021NovelEO,
  title={Novel evaluation of the hadronic contribution to the muon’s 
g−2
 from QCD},
  author={Marco Frasca and Anish Ghoshal and Stefan Groote},
  journal={Physical Review D},
  year={2021}
}

• M. Frasca, A. Ghoshal, S. Groote
• Published 10 September 2021
• Physics
• Physical Review D

Marco Frasca ID , ∗ Anish Ghoshal ID , 3, † and Stefan Groote ID 4, ‡ Rome, Italy Institute of Theoretical Physics, Faculty of Physics, University of Warsaw,ul. Pasteura 5, 02-093 Warsaw, Poland INFN Sezione Roma “Tor Vergata”, Via della Ricerca Scientifica 1, 00133, Roma, Italy Füüsika Instituut, Tartu Ulikool, W. Ostwaldi 1, EE-50411 Tartu, Estonia Abstract We evaluate the hadronic contribution to the g − 2 of the muon by deriving the low-energy limit of quantum chromodynamics (QCD) and computing in this way the hadronic vacuum polarization. The low-energy limit is a non-local Nambu–Jona-Lasinio (NJL) model that has all the parameters fixed from QCD, and the only experimental input used is the confinement scale that is known from measurements of hadronic physics. Our estimations provide a novel analytical alternative to the current lattice computations and we find that our result is close to the similar computation performed from experimental data. We also comment on how this analytical approach technique, in general, may provide prospective estimates for hadronic computations from dark sectors and its implication in BSM model-building in future.