Precision study of positronium: Testing bound state QED theory

@article{Karshenboim2003PrecisionSO,
  title={Precision study of positronium: Testing bound state QED theory},
  author={Savely G. Karshenboim},
  journal={International Journal of Modern Physics A},
  year={2003},
  volume={19},
  pages={3879-3896}
}
  • S. Karshenboim
  • Published 8 October 2003
  • Physics
  • International Journal of Modern Physics A
As an unstable light pure leptonic system, positronium is a very specific probe atom to test bound state QED. In contrast to ordinary QED for free leptons, the bound state QED theory is not so well understood and bound state approaches deserve highly accurate tests. We present a brief overview of precision studies of positronium paying special attention to uncertainties of theory as well as comparison of theory and experiment. We also consider in detail advantages and disadvantages of… 
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References

SHOWING 1-10 OF 100 REFERENCES
Precision study of positronium and precision tests of the bound state quantum electrodynamics
Despite its very short lifetime positronium provides us with a number of accurate tests of the bound state quantum electrodynamics (QED). In this note a brief overview of QED theory and precision
Experimental Tests of QED in Positronium: Recent Advances
The current experimental situation regarding tests of fundamental physics using positronium is reviewed. Five measurements are discussed and compared with theoretical predictions: the singlet and
Measurement of the decay e+e− → 4γ at rest
Abstract The decay of e+e− at rest into four photons has been measured in a 20-day experiment at the Heidelberg-Darmstadt Crystal Ball. From a total of 4.9 × 1010 annihilations observed, 406 4gg
Neutrino decay of positronium in the standard model and beyond
Whether in the Standard Model or beyond it, neutrinos contribute to the invisible decay mode of orthopositronium but practically not at all to that of parapositronium. Although this remark does not
Search for C-violating, P-conserving interactions and observation of 23S1 to 21P1 transitions in positronium
Possible C-forbidden transitions between 23S1 and 21P1 states of positronium are investigated. Limits are placed on the CP-violating state-mixing matrix element:|〈21P1|HHCP| 23P1〉| < 65MHz. Zeeman
O(alpha(3) lnalpha) corrections to muonium and positronium hyperfine splitting.
TLDR
A new value of the muon-to-electron mass ratio is derived from the mu onium ground-state hyperfine splitting of a QED two-body bound state with different masses of constituents.
Doppler-free laser spectroscopy of positronium and muonium: Reanalysis of the 1S-2S measurements.
  • Danzmann, Fee, Chu
  • Physics, Medicine
    Physical review. A, General physics
  • 1989
A scheme for a precision measurement of the 1/ital S/-2/ital S/ transition frequency in positronium and muonium is reported, and corrections to the two most recent experiments are presented which
Muonium hyperfine structure and hadronic effects
A new result for the hadronic vacuum polarization correction to the muonium hyperfine splitting (HFS) is presented: Delta nu(had - vp) = (0.233 +- 0.003) kHz. Compared with previous calculations,
New precision measurement of the decay rate of singlet positronium.
TLDR
The singlet decay rate has been measured using magnetic singlet-triplet state mixing for positronium formed in a [ital N][sub 2]-isobutane gas mixture and is the first measurement sensitive enough to test the relative order [alpha][sup 2]ln[alpha] term in the singlet Decay rate calculation.
Spectroscopy of excited state positronium
AbstractElectric dipole transitions in the microwave range have been induced between the fine-structure levels of positronium in the excited staten=2. As an indication of the transitions, we used the
...
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3
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5
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