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Dynamical electroweak symmetry breaking due to strong Yukawa interactions
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SYSNO ASEP 0331617 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Dynamical electroweak symmetry breaking due to strong Yukawa interactions Title Dynamické narušení elektroslabé symetrie v důsledku silné Yukawovské interakce Author(s) Beneš, Petr (UJF-V)
Brauner, Tomáš (UJF-V) RID
Smetana, Adam (UJF-V)Source Title Journal of Physics G-Nuclear and Particle Physics. - : Institute of Physics Publishing - ISSN 0954-3899
Roč. 36, č. 11 (2009), 115004/1-115004/10Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords STANDARD MODEL ; TOPCOLOR ; PHYSICS Subject RIV BE - Theoretical Physics R&D Projects GA202/06/0734 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000270718000006 DOI 10.1088/0954-3899/36/11/115004 Annotation We present a new mechanism for electroweak symmetry breaking (EWSB) based on a strong Yukawa dynamics. We consider an SU(2)(L) x U(1)(Y) gauge invariant model endowed with the usual Standard Model fermion multiplets and with two massive scalar doublets. We show that, unlike in the Standard Model, EWSB is possible even with vanishing vacuum expectation values of the scalars. Such EWSB is achieved dynamically by means of the (presumably strong) Yukawa couplings and manifests itself by the emergence of fermion and gauge boson masses and scalar mass splittings, which are expressed in a closed form in terms of the fermion and scalar proper self-energies. The 'would-be' Nambu-Goldstone bosons are shown to be composites of both the fermions and the scalars. We demonstrate that the simplest version of the model is compatible with basic experimental constraints. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2010
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