Non-local Higgs actions: Tree-level electroweak constraints and high-energy unitarity
arXiv:1108.1876 · doi:10.1007/JHEP10(2011)076
Abstract
We consider electroweak symmetry breaking by a certain class of non-local Higgs sectors. Extending previous studies employing the Mandelstam condition, a straight Wilson line is used to make the Higgs action gauge invariant. We show the unitarization of vector-boson scattering for a wide class of non-local actions, but find that the Wilson-line model leads to tree-level corrections to electroweak precision observables, which restrict the parameter space of the model. We also find that Unhiggs models cannot address the hierarchy problem, once the parameters are expressed in terms of low-energy observables.
22 pages, 6 Figures
References in corpus (7)
- Unparticle Physics
- Electroweak Breaking on a Soft Wall
- Unparticle actions and gauge invariance
- Comments on "Gauge Fields and Unparticles"
- The Mandelstam-Terning Line Integral in Unparticle Physics -- A Reply to Galloway, Martin and Stancato
- The Gauged Unparticle Action
- Wilson Line Integrals in the Unparticle Action