$O(N_fα^2)$ Radiative Corrections in Low-Energy Electroweak Processes
| dc.creator | Stuart, Robin G. | |
| dc.date | 1997-12-08 | |
| dc.date.accessioned | 2026-07-07T04:03:03Z | |
| dc.date.available | 2026-07-07T04:03:03Z | |
| dc.description | Of the the three best-measured electroweak observables, $α$, $G_μ$ and $M_Z$, the first two are extracted from low-energy processes. Both $G_μ$ and $M_Z$ are now known to an accuracy of about 2 parts in $10^5$ and there is a proposal to improve the measurement of the muon lifetime by a factor of 10 in an experiment at Brookhaven. Yet calculations of electroweak radiative corrections currently do no better than a few parts in $10^3$--$10^4$ and therefore cannot exploit to available experimental precision. We report on the calculation of the ${\cal O}(N_fα^2)$ corrections to Thomson scattering and the muon lifetime from which $α$ and $G_μ$, respectively, are obtained. The ${\cal O}(N_fα^2)$ corrections are expected to be a dominant gauge-invariant subset of 2-loop corrections. | |
| dc.description | 4 pages LaTeX. 2 figures. Uses prhep97.sty, amsmath.sty and epsfig.sty. Talk presented at the International Europhysics Conference on High-Energy Physics, Jerusalem, Isreal, 19-26, August 1997 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9712308 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9712308 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/47494 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | $O(N_fα^2)$ Radiative Corrections in Low-Energy Electroweak Processes | |
| dc.type | text |