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The European Physical Journal C

, Volume 50, Issue 3, pp 647–654 | Cite as

On electroweak symmetry breaking in the littlest Higgs model

  • A. Dobado
  • L. Tabares
  • S. PeñarandaEmail author
Regular Article - Theoretical Physics

Abstract

In SU(5)/SO(5) little Higgs models radiative corrections give rise to SU(2)L×U(1)Y symmetry breaking. In this work we start a program for a detailed determination of the relevant terms of the effective Higgs potential by computing the contribution of the t, b and T quarks at the one-loop level, as a starting point for a higher-loop computation. In spite of the fact that some two-loop level contributions are well known to be important, we use our preliminary one-loop result to illustrate that, by demanding the effective potential to reproduce exactly the standard model Higgs potential, and in particular the relation mH 2=2λv2=2μ2, it will be possible to set new constraints on the parameter space of the littlest Higgs model when the computation of all the relevant contributions to the effective Higgs potential is completed.

Keywords

Higgs Boson Symmetry Breaking Gauge Boson Higgs Mass Goldstone Boson 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  1. 1.Departamento de Física Teórica IUniversidad Complutense de MadridMadridSpain
  2. 2.Department of PhysicsCERN TH DivisionGeneva 23Switzerland
  3. 3.IFIC – Instituto de Física CorpuscularCSIC – Universitat de ValènciaValenciaSpain

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