On the electroweak symmetry breaking in the Littlest Higgs model
| Autor: | Lourdes Tabares, Siannah Penaranda, Antonio Dobado |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Quark
Physics Particle physics Physics and Astronomy (miscellaneous) Electroweak interaction High Energy Physics::Phenomenology FOS: Physical sciences Física Little Higgs Parameter space Lambda Standard Model High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Composite Higgs SU(2) Higgs boson Symmetry breaking Supersymmetry Engineering (miscellaneous) Particle Physics - Phenomenology |
| Zdroj: | E-Prints Complutense: Archivo Institucional de la UCM Universidad Complutense de Madrid Digital.CSIC. Repositorio Institucional del CSIC instname E-Prints Complutense. Archivo Institucional de la UCM |
| ISSN: | 2005-0232 |
| Popis: | 8 pages, 3 figures.-- ISI Article Identifier: 000245853100015.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0606031 Printed version published Apr 2007. In SU(5)/SO(5) little Higgs models radiative corrections give rise to SU(2)(L)xU(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 m(H)^2 = 2λv^2 = 2μ^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 effective Higgs potential is completed. This work is supported by DGICYT (Spain) under project number BPA2005-02327. The work of S.P. has been partially supported by the European Union under contract No. MEIF-CT-2003-500030. |
| Databáze: | OpenAIRE |
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