Vector-like quarks in a composite Higgs model

Details Vector-like quarks in a composite Higgs model Vector-like quarks in a composite Higgs model

2008-06-09

arxiv.org/abs/0806.1472v2

JHEP 0812:029,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages with 8 figures Small modifications according to JHEP requirements

Scientific paper

10.1088/1126-6708/2008/12/029

Vector-like quarks are a common feature of "composite" Higgs models, where they intervene in cutting off the top-loop contribution to the Higgs boson mass and may, at the same time, affect the Electroweak Precision Tests (EWPT). A model based on SO(5)/SO(4) is here analyzed. In a specific non minimal version, vector-like quarks of mass as low as 300-500 GeV are allowed in a thin region of its parameter space. Other models fail to be consistent with the EWPT.

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