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Abstract
Composite Higgs models predict the existence of resonances. We study in detail the collider phenomenology of both the vector and fermionic resonances, including the possibility of both of them being light and within the reach of the LHC. We present current constraints from di-boson, di-lepton resonance searches and top partner pair searches on a set of simplified benchmark models based on the minimal coset SO(5)/SO(4), and make projections for the reach of the HL-LHC. We find that the cascade decay channels for the vector resonances into top partners, or vice versa, can play an important role in the phenomenology of the models. We present a conservative estimate for their reach by using the same-sign di-lepton final states. As a simple extrapolation of our work, we also present the projected reach at the 27 TeV HE-LHC and a 100 TeV pp collider.
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1 High Energy Physics Division, Argonne National Laboratory, Argonne, IL, U.S.A.
2 Enrico Fermi Institute, The University of Chicago, Chicago, IL, U.S.A.; Department of Physics, The University of Chicago, Chicago, IL, U.S.A.; Kavli Institute for Cosmological Physics, The University of Chicago, Chicago, IL, U.S.A.
3 Center for Theoretical Physics, Department of Physics and Astronomy, Seoul National University, Seoul, Korea; Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China