Gauge invariance, gauge-parameter independence and properties of Green functions
| dc.creator | Denner, Ansgar | |
| dc.creator | Dittmaier, Stefan | |
| dc.creator | Weiglein, Georg | |
| dc.date | 1995-05-10 | |
| dc.date.accessioned | 2026-07-07T03:57:36Z | |
| dc.date.available | 2026-07-07T03:57:36Z | |
| dc.description | The application of the background-field method to the electroweak Standard Model is reviewed and further explored. Special emphasis is put on questions of gauge invariance and gauge-parameter (in-)dependence. Owing to the gauge invariance of the background-field effective action, the vertex functions obey simple Ward identities which imply important properties of the vertex functions. Carrying out the renormalization in a way respecting background-field gauge invariance leads to considerable simplifications. The generalization of the background-field method to the non-linear realization of the scalar sector of the Standard Model is illustrated. Furthermore, the interplay between gauge independence of the S-matrix and Ward identities of vertex functions is investigated. Finally, the Standard Model contributions to the $S$, $T$, and $U$ parameters are calculated and discussed within the background-field method. | |
| dc.description | 25 pages, latex, ps-file available via anonymous ftp from ftp://ftp.physik.uni-wuerzburg.de/pub/preprint/WUE-ITP-95-010.ps , to appear in the proceedings of the Ringberg Workshop ``Perspectives for electroweak interactions in $e^+e^-$ collisions'', Ringberg Castle, February 5-8, 1995 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9505271 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9505271 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/45497 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Gauge invariance, gauge-parameter independence and properties of Green functions | |
| dc.type | text |