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arXiv · 1108.4000

LHC Limits on the Top-Higgs in Models with Strong Top-Quark Dynamics

R. Sekhar Chivukula·Baradhwaj Coleppa·Heather E. Logan·Adam Martin·Elizabeth H. Simmons
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Abstract

LHC searches for the standard model Higgs Boson in WW or ZZ decay modes place strong constraints on the top-Higgs state predicted in many models with new dynamics preferentially affecting top quarks. Such a state couples strongly to top-quarks, and is therefore produced through gluon fusion at a rate enhanced relative to the rate for the standard model Higgs boson. A top-Higgs state with mass less than 300 GeV is excluded at 95% CL if the associated top-pion has a mass of 150 GeV, and the constraint is even stronger if the mass of the top-pion state exceeds the top-quark mass or if the top-pion decay constant is a substantial fraction of the weak scale. These results have significant implications for theories with strong top dynamics, such as topcolor-assisted technicolor, top-seesaw models, and certain Higgsless models.

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R. Sekhar Chivukula, Baradhwaj Coleppa, Heather E. Logan, Adam Martin, Elizabeth H. Simmons. 2011-08-19. LHC Limits on the Top-Higgs in Models with Strong Top-Quark Dynamics. https://doi.org/10.1103/physrevd.84.095022

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