Complete Tenth-Order QED Contribution to the Muon g2

Tatsumi Aoyama, Masashi Hayakawa, Toichiro Kinoshita, and Makiko Nio
Phys. Rev. Lett. 109, 111808 – Published 13 September 2012

Abstract

We report the result of our calculation of the complete tenth-order QED terms of the muon g2. Our result is aμ(10)=753.29 (1.04) in units of (α/π)5, which is about 4.5 s.d. larger than the leading-logarithmic estimate 663(20). We also improve the precision of the eighth-order QED term of aμ, obtaining aμ(8)=130.8794 (63) in units of (α/π)4. The new QED contribution is aμ(QED)=116584718951(80)×1014, which does not resolve the existing discrepancy between the standard-model prediction and measurement of aμ.

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  • Received 24 May 2012

DOI:https://doi.org/10.1103/PhysRevLett.109.111808

© 2012 American Physical Society

Authors & Affiliations

Tatsumi Aoyama1,2, Masashi Hayakawa3,2, Toichiro Kinoshita4,2, and Makiko Nio2

  • 1Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya, 464-8602, Japan
  • 2Nishina Center, RIKEN, Wako, Japan 351-0198
  • 3Department of Physics, Nagoya University, Nagoya, Japan 464-8602
  • 4Laboratory for Elementary Particle Physics, Cornell University, Ithaca, New York 14853, USA

See Also

Tenth-Order QED Contribution to the Electron g2 and an Improved Value of the Fine Structure Constant

Tatsumi Aoyama, Masashi Hayakawa, Toichiro Kinoshita, and Makiko Nio
Phys. Rev. Lett. 109, 111807 (2012)

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Vol. 109, Iss. 11 — 14 September 2012

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