Tests of the Standard Model and Constraints on New Physics from Measurements of Fermion-pair Production at 183 GeV at LEP
| dc.creator | The OPAL Collaboration | |
| dc.creator | al, G. Abbiendi et | |
| dc.date | 1998-08-21 | |
| dc.date.accessioned | 2026-07-07T12:02:24Z | |
| dc.date.available | 2026-07-07T12:02:24Z | |
| dc.description | Cross-sections for hadronic, b-bbar and lepton pair final states in e+e- collisions at sqrt(s) = 183 GeV, measured with the OPAL detector at LEP, are presented and compared with the predictions of the Standard Model. Forward-backward asymmetries for the leptonic final states have also been measured. Cross-sections and asymmetries are also presented for data recorded in 1997 at sqrt(s) = 130 and 136 GeV. The results are used to measure the energy dependence of the electromagnetic coupling constant alpha_em, and to place limits on new physics as described by four-fermion contact interactions or by the exchange of a new heavy particle such as a leptoquark, or of a squark or sneutrino in supersymmetric theories with R-parity violation. | |
| dc.description | 35 pages, LaTeX, 12 ps figures (and 9 colour figs) included, submitted to European Physical Journal C | |
| dc.identifier | https://arxiv.org/abs/hep-ex/9808023 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/9808023 | |
| dc.identifier | Eur.Phys.J.C6:1-18,1999 | |
| dc.identifier | doi:10.1007/s100529801027 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207427 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Tests of the Standard Model and Constraints on New Physics from Measurements of Fermion-pair Production at 183 GeV at LEP | |
| dc.type | text |