Journal article

Publication year: 2020

Journal: Physical Review D

Volume number: 101

Issue number: 5

ISSN: 2470-0010

eISSN: 2470-0029

Open access status: Hybrid

DOI Link: https://doi.org/10.1103/PhysRevD.101.054015

Publisher: American Physical Society

Abstract: 
We present results for the charged kaon-box contributions to the hadronic light-by-light (HLBL) correction of the muon's anomalous magnetic moment. To this end we determine the kaon electromagnetic form factor within the functional approach to QCD using Dyson-Schwinger and Bethe-Salpeter equations and evaluate the kaon-box contribution as defined in the dispersive approach to HLBL. As an update to previous work we also reevaluate the charged pion-box contribution taking effects due to isospin breaking into account. Our results are a(mu)(pi +/--box) = -15.7(2)(3) x 10(-11) and a(mu)(k +/--box) = -0.48(2)(4) x 10(-11) thus confirming the large suppression of box contributions beyond the leading pion box.

Harvard Citation style: Eichmann, G., Fischer, C. and Williams, R. (2020) Kaon-box contribution to the anomalous magnetic moment of the muon, Physical Review D, 101(5), Article 054015. https://doi.org/10.1103/PhysRevD.101.054015

APA Citation style: Eichmann, G., Fischer, C., & Williams, R. (2020). Kaon-box contribution to the anomalous magnetic moment of the muon. Physical Review D. 101(5), Article 054015. https://doi.org/10.1103/PhysRevD.101.054015