Hadronic vacuum polarization and muon from magnetic susceptibilities on the lattice

Bali GS, Endrödi G (2015)
Physical Review D 92(5): 054506.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Bali, Gunnar S.; Endrödi, GergelyUniBi
Abstract / Bemerkung
We present and test a new method to compute the hadronic vacuum polarization function in lattice simulations. This can then be used, e.g., to determine the leading hadronic contribution to the anomalous magnetic moment of the muon. The method is based on computing susceptibilities with respect to external electromagnetic plane wave fields and allows for a precision determination of both the connected and the disconnected contributions to the vacuum polarization. We demonstrate that the statistical errors obtained with our method are much smaller than those quoted in previous lattice studies, primarily due to a very effective suppression of the errors of the disconnected terms. These turn out to vanish within small errors, enabling us to quote an upper limit. We also comment on the accuracy of the vacuum polarization function determined from present experimental R-ratio data.
Erscheinungsjahr
2015
Zeitschriftentitel
Physical Review D
Band
92
Ausgabe
5
Art.-Nr.
054506
ISSN
1550-7998
eISSN
1550-2368
Page URI
https://pub.uni-bielefeld.de/record/2955739

Zitieren

Bali GS, Endrödi G. Hadronic vacuum polarization and muon from magnetic susceptibilities on the lattice. Physical Review D. 2015;92(5): 054506.
Bali, G. S., & Endrödi, G. (2015). Hadronic vacuum polarization and muon from magnetic susceptibilities on the lattice. Physical Review D, 92(5), 054506. https://doi.org/10.1103/PhysRevD.92.054506
Bali, G. S., and Endrödi, G. (2015). Hadronic vacuum polarization and muon from magnetic susceptibilities on the lattice. Physical Review D 92:054506.
Bali, G.S., & Endrödi, G., 2015. Hadronic vacuum polarization and muon from magnetic susceptibilities on the lattice. Physical Review D, 92(5): 054506.
G.S. Bali and G. Endrödi, “Hadronic vacuum polarization and muon from magnetic susceptibilities on the lattice”, Physical Review D, vol. 92, 2015, : 054506.
Bali, G.S., Endrödi, G.: Hadronic vacuum polarization and muon from magnetic susceptibilities on the lattice. Physical Review D. 92, : 054506 (2015).
Bali, Gunnar S., and Endrödi, Gergely. “Hadronic vacuum polarization and muon from magnetic susceptibilities on the lattice”. Physical Review D 92.5 (2015): 054506.

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