منابع مشابه
Muonium hyperfine structure and hadronic effects
A new result for the hadronic vacuum polarization correction to the muonium hyperfine splitting (HFS) is presented: ∆ν(had – vp) = (0.233 ± 0.003) kHz. Compared with previous calculations, the accuracy is improved by using the latest data on e+e− → hadrons. The status of the QED prediction for HFS is discussed.
متن کاملImproved theory of the muonium hyperfine structure.
Terms contributing to the hyperfine structure of the muonium ground state at the level of few tenths of kHz have been evaluated. The α(Zα) radiative correction has been calculated numerically to the precision of 0.02 kHz. Leading ln(Zα) terms of order α(Zα), n = 1, 2, 3, and some relativistic corrections have been evaluated analytically. The theoretical uncertainty is now reduced to 0.17 kHz. A...
متن کاملRadiative Corrections to the Muonium Hyperfine Structure . I . The α 2 ( Zα ) Correction
Radiative Corrections to the Muonium Hyperfine Structure.
متن کاملRadiative Corrections to the Muonium Hyperfine Structure . II . The α ( Zα ) 2 Correction
This is the second of a series of papers on the radiative corrections of order α2(Zα), α(Zα)2, and various logarithmic terms of order α4, to the hyperfine structure of the muonium ground state. This paper deals with the α(Zα)2 correction. Based on the NRQED bound state theory, we isolated the term of order α(Zα)2 exactly. Our result +16.904 2 (11)α(Zα)EF /π for the nonlogarithmic part is consis...
متن کاملThree-Loop Radiative-Recoil Corrections to Hyperfine Splitting in Muonium
We calculate three-loop radiative-recoil corrections to hyperfine splitting in muonium generated by the diagrams with the first order electron and muon polarization loop insertions in graphs with two exchanged photons. These corrections are enhanced by the large logarithm of the electron-muon mass ratio. The leading logarithm squared contribution was obtained a long time ago. Here we calculate ...
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ژورنال
عنوان ژورنال: Nature
سال: 1977
ISSN: 0028-0836,1476-4687
DOI: 10.1038/267582a0