Hadronic light-by-light scattering contribution to muon g-2
Abstract
The hadronic light-by-light scattering contribution to muon g-2 is examined based on the low energy effective theories of QCD, the Nambu-Jona-Lasinio model, and hidden local symmetry approach, supplemented by general information concerning the asymptotic behavior of QCD. Our result is -52×10-11 with an uncertainty of +/-18×10-11, which includes our best estimate of the model dependence. This is within the expected measurement uncertainty of 40×10-11 in the forthcoming experiment at Brookhaven National Laboratory. Our result removes one of the main theoretical obstacles in verifying the existence of the weak contribution to the muon g-2.
- Publication:
-
Physical Review D
- Pub Date:
- September 1996
- DOI:
- 10.1103/PhysRevD.54.3137
- arXiv:
- arXiv:hep-ph/9601310
- Bibcode:
- 1996PhRvD..54.3137H
- Keywords:
-
- 13.40.Em;
- 11.15.Pg;
- 12.39.Fe;
- 14.60.Ef;
- Electric and magnetic moments;
- Expansions for large numbers of components;
- Chiral Lagrangians;
- Muons;
- High Energy Physics - Phenomenology
- E-Print:
- 42 pages, Revtex 4 figures