Non-local Higgs actions: tree-level electroweak constraints and high-energy unitarity
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 no...
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| Veröffentlicht in: | The journal of high energy physics 2011-10, Vol.2011 (10), Article 76 |
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| creator | Beneke, M. Knechtges, P. Mück, A. |
| description | 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. |
| doi_str_mv | 10.1007/JHEP10(2011)076 |
| format | Article |
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| source | Springer Nature OA/Free Journals |
| subjects | Broken symmetry Classical and Quantum Gravitation Electroweak model Elementary Particles High energy physics Mathematical models Parameters Physics Physics and Astronomy Quantum Field Theories Quantum Field Theory Quantum Physics Relativity Theory String Theory |
| title | Non-local Higgs actions: tree-level electroweak constraints and high-energy unitarity |
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