Boosting Top Partner Searches in Composite Higgs Models

Azatov, Aleksandr; Salvarezza, Matteo; Son, Minho; Spannowsky, Michael

Abstract

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 X5/3 and B. In the class of composite Higgs models we study, X5/3 is very special as it is the lightest exotic fermion. A constraint on the mass of X5/3 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 TeV a combined search for X5/3 and B in the l+jets final state can be more sensitive than a search involving same-sign dileptons.

Citation

Azatov, A., Salvarezza, M., Son, M., & Spannowsky, M. (2014). Boosting Top Partner Searches in Composite Higgs Models. Physical Review D, 89(7), Article 075001. https://doi.org/10.1103/physrevd.89.075001

• Journal Article Type: Article
• Publication Date: Apr 1, 2014
• Deposit Date: Dec 12, 2014
• Publicly Available Date: Apr 27, 2015
• Journal: Physical Review D - Particles, Fields, Gravitation, and Cosmology
• Print ISSN: 1550-7998
• Electronic ISSN: 1550-2368
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 89
• Issue: 7
• Article Number: 075001
• DOI: https://doi.org/10.1103/physrevd.89.075001
• Public URL: https://durham-repository.worktribe.com/output/1415509