Constraints on Mass Spectrum of Fourth Generation Fermions and Higgs Bosons

Details Constraints on Mass Spectrum of Fourth Generation Fermions and Higgs Bosons Constraints on Mass Spectrum of Fourth Generation Fermions and Higgs Bosons

2010-01-25

arxiv.org/abs/1001.4335v2

Phys.Rev.D81:075023,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 16 figures; some points clarified, references added, to appear in Phys.Rev.D

Scientific paper

10.1103/PhysRevD.81.075023

We reanalyze constraints on the mass spectrum of the chiral fourth generation fermions and the Higgs bosons for the standard model (SM4) and the two Higgs doublet model (THDM). We find that the Higgs mass in the SM4 should be larger than roughly the fourth generation up-type quark mass, while the light CP even Higgs mass in the THDM can be smaller. Various mass spectra of the fourth generation fermions and the Higgs bosons are allowed. The phenomenology of the fourth generation models is still rich.

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