Lowest order hadronic contribution to the muon g-2 value with systematic error correlations
Abstract
We have performed a new evaluation of the hadronic contribution to aμ=(g-2)/2 of the muon with explicit correlations of systematic errors among the experimental data on σ(e+e--->hadrons). Our result for the lowest order hadronic vacuum polarization contribution is ahadμ=702.6(7.8)(14.0)×10-10 where the first error is statistical and the second is systematic. The total systematic error contributions from below and above √s=1.4 GeV are (13.1)×10-10 and (5.1)×10-10, respectively, and are hence dominated by the low energy region. Therefore, new measurements on σ(e+e--->hadrons) below 1.4 GeV can significantly reduce the total error on ahadμ. In particular, the effect on the total errors of new hypothetical data with 3% statistical and 0.5-1.0 % systematic errors is presented.
- Publication:
-
Physical Review D
- Pub Date:
- September 1996
- DOI:
- 10.1103/PhysRevD.54.3237
- arXiv:
- arXiv:hep-ph/9607319
- Bibcode:
- 1996PhRvD..54.3237B
- Keywords:
-
- 14.60.Ef;
- 06.20.Dk;
- 13.65.+i;
- Muons;
- Measurement and error theory;
- High Energy Physics - Phenomenology
- E-Print:
- LaTeX with REVTeX style and options: multicol,aps,psfig. 18 pages, postscript figures included after text. Accepted in Phys. Rev. D (~ Sept 1996)