Minimal Composite Higgs Model with Light Bosons

Details Minimal Composite Higgs Model with Light Bosons Minimal Composite Higgs Model with Light Bosons

1999-08-17

arxiv.org/abs/hep-ph/9908391v2

Phys.Rev. D63 (2001) 015004

Physics

High Energy Physics

High Energy Physics - Phenomenology

33 pages, latex. Corrections in eqs. 3.21, 3.23, 4.1, 4.5-10. One figure added

Scientific paper

10.1103/PhysRevD.63.015004

We analyze a composite Higgs model with the minimal content that allows a light Standard-Model-like Higgs boson, potentially just above the current LEP limit. The Higgs boson is a bound state made up of the top quark and a heavy vector-like quark. The model predicts that only one other bound state may be lighter than the electroweak scale, namely a CP-odd neutral scalar. Several other composite scalars are expected to have masses in the TeV range. If the Higgs decay into a pair of CP-odd scalars is kinematically open, then this decay mode is dominant, with important implications for Higgs searches. The lower bound on the CP-odd scalar mass is loose, in some cases as low as $\sim$ 100 MeV, being set only by astrophysical constraints.

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