Boosting top partner searches in composite Higgs models

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Fermionic third generation top partners are generic in composite Higgs models. They are likely to decay into third generation quarks and electroweak bosons. We propose a novel cut-and-count-style analysis in which we cross correlate the model-dependent single and model-independent pair production processes for the top partners X-5/3 and B. In the class of composite Higgs models we study, X-5/3 is very special as it is the lightest exotic fermion. A constraint on the mass of X-5/3 directly extends to constrains on all top partner masses. By combining jet substructure methods with conventional reconstruction techniques we show that in this kind of final state a smooth interpolation between the boosted and unboosted regime is possible. We find that a reinterpretation of existing searches can improve bounds on the parameter space of composite Higgs models. Further, at 8 TeVa combined search for X-5/3 and B in the l + jets final state can be more sensitive than a search involving same-sign dileptons.
Publisher
AMER PHYSICAL SOC
Issue Date
2014-04
Language
English
Article Type
Article
Keywords

BOSON; LHC; ALGORITHMS

Citation

PHYSICAL REVIEW D, v.89, no.7

ISSN
1550-7998
DOI
10.1103/PhysRevD.89.075001
URI
http://hdl.handle.net/10203/203720
Appears in Collection
PH-Journal Papers(저널논문)
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