Tenth-order QED lepton anomalous magnetic moment: Eighth-order vertices containing a second-order vacuum polarization
نویسندگان
چکیده
منابع مشابه
Higher-order hadronic and heavy-lepton contributions to the anomalous magnetic moment
We report about recent results obtained for the muon anomalous magnetic moment. Three-loop kernel functions have been computed to obtain the next-to-next-to-leading-order hadronic vacuum polarization contributions. The numerical result, a had,NNLO μ = 1.24± 0.01× 10−10, is of the same order of magnitude as the current uncertainty from the hadronic contributions. For heavylepton corrections, ana...
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This article reviews and updates the Standard Model prediction of the τ lepton g−2. Updated QED and electroweak contributions are presented, together with new values of the leading-order hadronic term, based on the recent low energy ee data from BaBar, CMD-2, KLOE and SND, and of the hadronic light-by-light contribution. The total prediction is confronted to the available experimental bounds on...
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The anomalous moment of the muon is one of the most fundamental observables. It has been measured experimentally with a very high precision and on theory side the contributions from perturbative QED have been calculated up to five-loop level by numerical methods. Contributions to the muon anomalous magnetic moment from certain diagram classes are also accessible by alternative methods. In this ...
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Three–loop contributions to massive QED vacuum polarization are evaluated by a combination of analytical and numerical techniques. The first three Taylor coefficients, at small q, are obtained analytically, using d–dimensional recurrence relations. Combining these with analytical input at threshold, and at large q, an accurate Padé approximation is obtained, for all q. Inserting this in the one...
متن کاملComplete tenth-order QED contribution to the muon g-2.
We report the result of our calculation of the complete tenth-order QED terms of the muon g-2. Our result is a(μ)((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 a(μ), obtaining a(μ)((8))=130.8794 (63) in units of (α/π)(4). The new QED contribution is a(μ)(QED)=1...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2012
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.85.033007