Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-08-19
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, 6 pdf figures included. Updated with 2011 Lepton-Photon conference Higgs limits. Order of figures reversed, and concl
Scientific paper
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.
Chivukula Sekhar R.
Coleppa Baradhwaj
Logan Heather E.
Martin Adam
Simmons Elizabeth H.
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