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

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.

9 pages, 6 pdf figures included. Updated with 2011 Lepton-Photon conference Higgs limits. Order of figures reversed, and conclusion slightly expanded and clarified

References in corpus (3)

• Hypercharge-Universal Topcolor
• The Top Triangle Moose: Combining Higgsless and Topcolor Mechanisms for Mass Generation
• Top-Higgs and Top-pion phenomenology in the Top Triangle Moose model

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• Top-Mode Pseudos at the LHC
• Photoproduction of the charged top-pions at the LHeC
• A note on the coupling of the techni-dilaton to the weak bosons
• Topcolor in the LHC Era
• Higgs phenomenology beyond the Standard Model