Search Strategies for Top Partners in Composite Higgs models
We consider how best to search for top partners in generic composite Higgs models. We begin by classifying the possible group representations carried by top partners in models with and without a custodial \(SU(2)\times SU(2) \rtimes \mathbb{Z}_2\) symmetry protecting the rate for \(Z \rightarrow b\o...
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description | We consider how best to search for top partners in generic composite Higgs models. We begin by classifying the possible group representations carried by top partners in models with and without a custodial \(SU(2)\times SU(2) \rtimes \mathbb{Z}_2\) symmetry protecting the rate for \(Z \rightarrow b\overline{b}\) decays. We identify a number of minimal models whose top partners only have electric charges of \(\frac{1}{3}, \frac{2}{3},\) or \(\frac{4}{3}\) and thus decay to top or bottom quarks via a single Higgs or electroweak gauge boson. We develop an inclusive search for these based on a top veto, which we find to be more effective than existing searches. Less minimal models feature light states that can be sought in final states with like-sign leptons and so we find that 2 straightforward LHC searches give a reasonable coverage of the gamut of composite Higgs models. |
doi_str_mv | 10.48550/arxiv.1406.5957 |
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subjects | Decay rate Leptons Physics - High Energy Physics - Experiment Physics - High Energy Physics - Phenomenology Quarks Searching |
title | Search Strategies for Top Partners in Composite Higgs models |
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