Revised value of the eighth-order QED contribution to the anomalous magnetic moment of the electron
Journal Article
·
· Physical Review. D, Particles Fields
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801 (Japan)
We have carried out a new evaluation of the eighth-order contribution to the electron g-2 using FORTRAN codes generated by an automatic code generator gencodeN. Comparison of the new result with the old one has revealed an inconsistency in the treatment of the infrared divergences in the latter. With this error corrected we now have two independent determinations of the eighth-order term. This leads to the revised value 1 159 652 182.79(7.71)x10{sup -12} of the electron g-2, where the uncertainty comes mostly from that of the best non-QED value of the fine structure constant {alpha}. The new value of {alpha} derived from the revised theory and the latest experiment is {alpha}{sup -1}=137.035 999 084(51) [0.37 ppb], which is about 4.7 ppb smaller than the previous {alpha}{sup -1}.
- OSTI ID:
- 21249695
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
New Measurement of the Electron Magnetic Moment and the Fine Structure Constant
New Determination of the Fine Structure Constant from the Electron g Value and QED
New Determination of the Fine Structure Constant and Test of the Quantum Electrodynamics
Journal Article
·
Fri Mar 28 00:00:00 EDT 2008
· Physical Review Letters
·
OSTI ID:21123775
New Determination of the Fine Structure Constant from the Electron g Value and QED
Journal Article
·
Fri Jul 21 00:00:00 EDT 2006
· Physical Review Letters
·
OSTI ID:20860525
New Determination of the Fine Structure Constant and Test of the Quantum Electrodynamics
Journal Article
·
Thu Feb 24 23:00:00 EST 2011
· Physical Review Letters
·
OSTI ID:21562056