Revised $α^4$ term of lepton $g-2$ from the Feynman diagrams containing an internal light-by-light scattering subdiagram
| dc.creator | Kinoshita, T. | |
| dc.creator | Nio, M. | |
| dc.date | 2002-10-24 | |
| dc.date | 2002-11-29 | |
| dc.date.accessioned | 2026-07-07T11:31:20Z | |
| dc.date.available | 2026-07-07T11:31:20Z | |
| dc.description | The $α^4$ contribution to the lepton $g-2$ from a gauge-invariant set of 18 Feynman diagrams containing a light-by-light scattering subdiagram internally has been reevaluated by a method independent of the previous approach. Comparison of two methods revealed a program error in the first version. Correcting this error, the contributions of these 18 diagrams become -0.990 72 (10)$(α/π)^4$ and -4.432 43 (58)$(α/π)^4$ for the electron and muon $g-2$, respectively. The correction is not large enough to affect the comparison between theory and experiment for the muon $g-2$, but it does alter the inferred value for the fine structure constant $α^{-1}$ by 6 ppb. | |
| dc.description | 4 pages, 2 figures. The abstract is modified. The current levels of precision in lepton g-2 are mentioned | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0210322 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0210322 | |
| dc.identifier | Phys.Rev.Lett.90:021803,2003 | |
| dc.identifier | doi:10.1103/PhysRevLett.90.021803 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/197234 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Revised $α^4$ term of lepton $g-2$ from the Feynman diagrams containing an internal light-by-light scattering subdiagram | |
| dc.type | text |