On the electroweak symmetry breaking in the Littlest Higgs model

In the SU(5)/SO(5) Little Higgs models, radiative corrections give rise to the SU(2)_L x U(1)_Y symmetry breaking. In this work we compute the Higgs effective potential obtained after integrating out the b, t and T quarks at the one-loop level. By demanding this potential to reproduce the Standard M...

Descripción completa

Detalles Bibliográficos
Autores principales: Dobado, Antonio, Tabares, Lourdes, Penaranda, Siannah
Lenguaje:eng
Publicado: 2006
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1140/epjc/s10052-007-0232-8
http://cds.cern.ch/record/955885
_version_ 1780910043453980672
author Dobado, Antonio
Tabares, Lourdes
Penaranda, Siannah
author_facet Dobado, Antonio
Tabares, Lourdes
Penaranda, Siannah
author_sort Dobado, Antonio
collection CERN
description In the SU(5)/SO(5) Little Higgs models, radiative corrections give rise to the SU(2)_L x U(1)_Y symmetry breaking. In this work we compute the Higgs effective potential obtained after integrating out the b, t and T quarks at the one-loop level. By demanding this potential to reproduce the Standard Model Higgs potential, and in particular the relation mH^2 = 2 lambda v^2 = 2 mu^2, we set new constraints on the parameter space of the Littlest Higgs model. These constraints could still be compatible with the present phenomenology and the standard expectation from this model but more detailed computations are needed.
id cern-955885
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2006
record_format invenio
spelling cern-9558852023-03-14T18:47:32Zdoi:10.1140/epjc/s10052-007-0232-8http://cds.cern.ch/record/955885engDobado, AntonioTabares, LourdesPenaranda, SiannahOn the electroweak symmetry breaking in the Littlest Higgs modelParticle Physics - PhenomenologyIn the SU(5)/SO(5) Little Higgs models, radiative corrections give rise to the SU(2)_L x U(1)_Y symmetry breaking. In this work we compute the Higgs effective potential obtained after integrating out the b, t and T quarks at the one-loop level. By demanding this potential to reproduce the Standard Model Higgs potential, and in particular the relation mH^2 = 2 lambda v^2 = 2 mu^2, we set new constraints on the parameter space of the Littlest Higgs model. These constraints could still be compatible with the present phenomenology and the standard expectation from this model but more detailed computations are needed.In the SU(5)/SO(5) little Higgs models radiative corrections give rise to the SU(2)_L x U(1)_Y symmetry breaking. In this work we start a program for a detailed determination of the relevant terms of the Higgs effective potential by computing the contribution of the b, t and T quarks at the one-loop level, as an starting point for higher-loops 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 m_H^2= 2 lambda v^2= 2 mu^2, 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 Higgs effective potential is completed.hep-ph/0606031CERN-PH-TH-2006-097CERN-PH-TH-2006-097oai:cds.cern.ch:9558852006-06-02
spellingShingle Particle Physics - Phenomenology
Dobado, Antonio
Tabares, Lourdes
Penaranda, Siannah
On the electroweak symmetry breaking in the Littlest Higgs model
title On the electroweak symmetry breaking in the Littlest Higgs model
title_full On the electroweak symmetry breaking in the Littlest Higgs model
title_fullStr On the electroweak symmetry breaking in the Littlest Higgs model
title_full_unstemmed On the electroweak symmetry breaking in the Littlest Higgs model
title_short On the electroweak symmetry breaking in the Littlest Higgs model
title_sort on the electroweak symmetry breaking in the littlest higgs model
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1140/epjc/s10052-007-0232-8
http://cds.cern.ch/record/955885
work_keys_str_mv AT dobadoantonio ontheelectroweaksymmetrybreakinginthelittlesthiggsmodel
AT tabareslourdes ontheelectroweaksymmetrybreakinginthelittlesthiggsmodel
AT penarandasiannah ontheelectroweaksymmetrybreakinginthelittlesthiggsmodel

Ejemplares similares