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Weakly coupled Higgsless theories and precision electroweak tests

In 5 dimensions the electroweak symmetry can be broken by boundary conditions, leading to a new type of Higgsless theories. These could in principle improve on the 4D case by extending the perturbative domain to energies higher than $4 \pi v$ and by allowing a better fit to the electroweak precision...

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Detalles Bibliográficos
Autores principales: Barbieri, Riccardo, Pomarol, Alex, Rattazzi, Riccardo
Lenguaje:eng
Publicado: 2003
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2004.04.005
http://cds.cern.ch/record/678689
Descripción
Sumario:In 5 dimensions the electroweak symmetry can be broken by boundary conditions, leading to a new type of Higgsless theories. These could in principle improve on the 4D case by extending the perturbative domain to energies higher than $4 \pi v$ and by allowing a better fit to the electroweak precision tests. Nevertheless, it is unlikely that both these improvements can be achieved, as we show by discussing these problems in an explicit model.