Corrections to the Positronium Hyperfine Structure of Orderα2lnα−1
نویسندگان
چکیده
منابع مشابه
Proton Structure Corrections to Hydrogen Hyperfine Splitting
The largest uncertainty in calculations of hydrogen ground-state hyperfine splitting comes from corrections due to proton stucture. We review these corrections, with special mention of the inelastic, or polarizability, corrections which have been recently re-evaluated. Summing up the arguably best current values for the calculated corrections leaves us 1–2 ppm short of the experimental data. We...
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Radiative corrections to the Zemach contribution of the hydrogen hyperfine splitting are calculated. Their contributions amount to −0.63(3) ppm to the HFS. The radiative recoil corrections are estimated to be 0.09(3) ppm and heavy particle vacuum polarization shifts the HFS by 0.10(2) ppm. The status of the nuclear-dependent contributions are considered. From the comparison of theory and experi...
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The perturbative series for binding energies of a QED bound state are non-analytic in the fine structure constant and the expansion contains powers of α1 ln2 α, where n1 and n2 are some integer numbers. The appearance of logarithms of α is best explained by the fact that different scales, such as the mass m, the momentum mα and the typical energy mα control dynamics of the bound state. In a rec...
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We consider the proton structure corrections to hydrogen ground-state hyperfine structure, focusing on a state-of-the-art evaluation of the inelastic nucleon corrections—the polarizability corrections—using analytic fits to the most recent data. We find a value for the fractional correction ∆pol of 1.3 ± 0.3 ppm. This is 1–2 ppm smaller than the value of ∆pol one would deduce using hyperfine sp...
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Hyperfine intervals in light hydrogenic atoms and ions are among the most accurately measured quantities in physics. The theory of QED corrections has recently advanced to the point that uncalculated terms for hydrogenic atoms and ions are probably smaller than 0.1 parts per million (ppm), and the experiments are even more accurate. The difference of the experiments and QED theory is interprete...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1970
ISSN: 0031-9007
DOI: 10.1103/physrevlett.25.782.2