Constraints on Extended Neutral Gauge Structures
| dc.creator | Erler, Jens | |
| dc.creator | Langacker, Paul | |
| dc.date | 1999-03-24 | |
| dc.date.accessioned | 2026-07-07T10:33:50Z | |
| dc.date.available | 2026-07-07T10:33:50Z | |
| dc.description | Indirect precision data are used to constrain the masses of possible extra Z^prime bosons and their mixings with the ordinary Z. We study a variety of Z^prime bosons as they appear in E_6 and left-right unification models, the sequential Z boson, and the example of an additional U(1) in a concrete model from heterotic string theory. In all cases the mixings are severely constrained (sin theta < 0.01). The lower mass limits are generally of the order of several hundred GeV and competitive with collider bounds. The exception is the Z_psi boson, whose vector couplings vanish and whose limits are weaker. The results change little when the rho parameter is allowed, which corresponds to a completely arbitrary Higgs sector. On the other hand, in specific models with minimal Higgs structures the limits are generally pushed into the TeV region. | |
| dc.description | 13 pages of LaTeX2e, 6 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9903476 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9903476 | |
| dc.identifier | Phys.Lett.B456:68-76,1999 | |
| dc.identifier | doi:10.1016/S0370-2693(99)00457-8 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179263 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Constraints on Extended Neutral Gauge Structures | |
| dc.type | text |