ElectroWeak precision data: the minimal set of parameters
| dc.creator | Marandella, Guido | |
| dc.date | 2006-05-24 | |
| dc.date.accessioned | 2026-07-07T07:13:20Z | |
| dc.date.available | 2026-07-07T07:13:20Z | |
| dc.description | We show how precision electroweak data, assuming CP conservation and flavor universality, despite being sensitive to 20 dimension 6 operators, constrain severely only 9 combinations of them. We define a set of 7 oblique parameters $\hat S, \hat T, \hat U, V, X,W,Y$ which fully describe corrections to the leptonic observables. We add two additional parameters $δε_q, δC_q$ to take into account the most precise hadronic observables. Another parameter $δε_b$ is considered for the bottom quark if flavor universality is not assumed for the third generation of quarks. We show that the approximation is extremely satisfactory testing it on a set of random new physics models and on some famous $Z'$ gauge bosons. | |
| dc.description | To appear in the proceedings of the XLIst Rencontres de Moriond, ElectroWeak interactions and unified theories | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0605265 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0605265 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/112422 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | ElectroWeak precision data: the minimal set of parameters | |
| dc.type | text |