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Discovery potential of top-partners in a realistic composite Higgs model with early LHC data

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Abstract

Composite Higgs models provide a natural, non-supersymmetric solution to the hierarchy problem. In these models, one or more sets of heavy top-partners are typically introduced. Some of these new quarks can be relatively light, with a mass of a few hundred GeV, and could be observed with the early LHC collision data expected to be collected during 2010. We analyse in detail the collider signatures that these new quarks can produce. We show that final states with two (same-sign) or three leptons are the most promising discovery channels. They can yield a 5σ excess over the Standard Model expectation already with the 2010 LHC collision data. Exotic quarks of charge 5/3 are a distinctive feature of this model. We present a new method to reconstruct their masses from their leptonic decay without relying on jets in the final state.

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Authors and Affiliations

  1. Institute for Particle Physics, ETH Zurich, 8093, Zurich, Switzerland

    Günther Dissertori, Filip Moortgat & Pascal Nef

  2. Institute for Theoretical Physics, ETH Zurich, 8093, Zurich, Switzerland

    Elisabetta Furlan

Authors
  1. Günther Dissertori
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  2. Elisabetta Furlan
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  3. Filip Moortgat
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  4. Pascal Nef
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Correspondence to Pascal Nef.

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ArXiv ePrint: 1005.4414

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Dissertori, G., Furlan, E., Moortgat, F. et al. Discovery potential of top-partners in a realistic composite Higgs model with early LHC data. J. High Energ. Phys. 2010, 19 (2010). https://doi.org/10.1007/JHEP09(2010)019

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  • DOI: https://doi.org/10.1007/JHEP09(2010)019

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