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Improved theory of the muon anomalous magnetic moment

Journal Article · · Phys. Rev. Lett.; (United States)
A new theoretical value a/sub ..mu../ = 11 659 202(20) x 10/sup -10/ is reported for the muon anomalous moment, based on the first complete calculation of the ..cap alpha../sup 4/ QED term and improvements of the ..cap alpha../sup 3/ QED term and various hadronic contributions. The remaining error is mostly due to the experimental inputs needed for evaluation of the hadronic vacuum polarization effect. Further improvement of this error seems possible. Thus the electroweak theory may be tested at the one-loop level if measurement of a/sub ..mu../ is improved by an order of magnitude.
Research Organization:
Newman Laboratory of Nuclear Studies, Cornell University, Ithaca, New York 14853
OSTI ID:
6586539
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 52:9; ISSN PRLTA
Country of Publication:
United States
Language:
English