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Article: New physics research from M. Gillioz and co-researchers described.
- Article from:
- Physics Week
- Article date:
- November 10, 2009
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"We study analytically and numerically the bounds imposed by the electroweak precision tests on a minimal composite Higgs model. The model is based on spontaneous SO(5) → SO(4) breaking, so that an approximate custodial symmetry is preserved," scientists in Lausanne, Switzerland report.
"The Higgs arises as a pseudo-Goldstone boson at a scale below the electroweak symmetry breaking scale. We show that one can satisfy the electroweak precision constraints without much fine-tuning. This is the case if the left-handed top quark is fully composite, which gives a mass spectrum within the reach of the LHC. However a composite top quark is strongly disfavored by ...