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Title: Higgs effective potential in the littlest Higgs model at the one-loop level

Abstract

In this work we compute the contributions to the Higgs effective potential coming from the fermion and gauge boson sectors at the one-loop level in the context of the SU(5)/SO(5) littlest Higgs (LH) model using a cutoff {lambda} and including all finite parts. We consider both, the (SU(2)xU(1)){sub 1}x(SU(2)xU(1)){sub 2} and the (SU(2)xU(1)){sub 1}x(SU(2)xU(1)) gauge group versions of the LH model. We also show that the Goldstone bosons present in the model do not contribute to the effective potential at the one-loop level. Finally, by neglecting the contribution of higher dimensional operators, we discuss the restrictions that the new one-loop contributions set on the parameter space of the LH model and the need to include higher loop corrections to the Higgs potential.

Authors:
; ;  [1];  [2]
  1. Departamento de Fisica Teorica, Universidad Complutense de Madrid, 28040 Madrid (Spain)
  2. (Spain)
Publication Date:
OSTI Identifier:
21020369
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 8; Other Information: DOI: 10.1103/PhysRevD.75.083527; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CORRECTIONS; FERMIONS; GAUGE INVARIANCE; GOLDSTONE BOSONS; HIGGS BOSONS; HIGGS MODEL; POTENTIALS; QUANTUM FIELD THEORY; SO-5 GROUPS; SU-2 GROUPS; U-1 GROUPS

Citation Formats

Dobado, Antonio, Tabares-Cheluci, Lourdes, Penaranda, Siannah, and IFIC-Instituto de Fisica Corpuscular, CSIC-Universitat de Valencia, Apartado de Correos 22085, E-46071 Valencia. Higgs effective potential in the littlest Higgs model at the one-loop level. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.083527.
Dobado, Antonio, Tabares-Cheluci, Lourdes, Penaranda, Siannah, & IFIC-Instituto de Fisica Corpuscular, CSIC-Universitat de Valencia, Apartado de Correos 22085, E-46071 Valencia. Higgs effective potential in the littlest Higgs model at the one-loop level. United States. doi:10.1103/PHYSREVD.75.083527.
Dobado, Antonio, Tabares-Cheluci, Lourdes, Penaranda, Siannah, and IFIC-Instituto de Fisica Corpuscular, CSIC-Universitat de Valencia, Apartado de Correos 22085, E-46071 Valencia. Sun . "Higgs effective potential in the littlest Higgs model at the one-loop level". United States. doi:10.1103/PHYSREVD.75.083527.
@article{osti_21020369,
title = {Higgs effective potential in the littlest Higgs model at the one-loop level},
author = {Dobado, Antonio and Tabares-Cheluci, Lourdes and Penaranda, Siannah and IFIC-Instituto de Fisica Corpuscular, CSIC-Universitat de Valencia, Apartado de Correos 22085, E-46071 Valencia},
abstractNote = {In this work we compute the contributions to the Higgs effective potential coming from the fermion and gauge boson sectors at the one-loop level in the context of the SU(5)/SO(5) littlest Higgs (LH) model using a cutoff {lambda} and including all finite parts. We consider both, the (SU(2)xU(1)){sub 1}x(SU(2)xU(1)){sub 2} and the (SU(2)xU(1)){sub 1}x(SU(2)xU(1)) gauge group versions of the LH model. We also show that the Goldstone bosons present in the model do not contribute to the effective potential at the one-loop level. Finally, by neglecting the contribution of higher dimensional operators, we discuss the restrictions that the new one-loop contributions set on the parameter space of the LH model and the need to include higher loop corrections to the Higgs potential.},
doi = {10.1103/PHYSREVD.75.083527},
journal = {Physical Review. D, Particles Fields},
number = 8,
volume = 75,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}