Standard model Higgs boson pair production in the ( bb¯ )( bb¯ ) final state

Ferreira de Lima, Danilo; Papaefstathiou, Andreas; Spannowsky, Michael

Abstract

Measuring the Higgs boson couplings as precisely as possible is one of the major goals of the High Luminosity LHC. We show that the ( bb ¯ )( bb ¯ ) final state in Higgs boson pair production can be exploited in the boosted regime to give constraints on the trilinear Higgs boson self-coupling. In these exclusive phase space regions, novel jet substructure techniques can be used to separate the signal from the large QCD and electroweak backgrounds. New developments on trigger and b-tagging strategies for the upcoming LHC runs are necessary in order to reconstruct the Higgs bosons in boosted final states, where the trilinear self-coupling sensitivity is reduced. We find that using our approach one can set a limit for λ ≤ 1.2 at 95% CL after 3000 fb−1. As the signal-to-background ratio is small, we propose a data-driven side-band analysis to improve on the coupling measurement.

Citation

Ferreira de Lima, D., Papaefstathiou, A., & Spannowsky, M. (2014). Standard model Higgs boson pair production in the ( bb¯ )( bb¯ ) final state. Journal of High Energy Physics, 2014(8), Article 030. https://doi.org/10.1007/jhep08%282014%29030

• Journal Article Type: Article
• Acceptance Date: Jul 9, 2014
• Online Publication Date: Aug 6, 2014
• Publication Date: Aug 6, 2014
• Deposit Date: Dec 12, 2014
• Publicly Available Date: Apr 27, 2015
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2014
• Issue: 8
• Article Number: 030
• DOI: https://doi.org/10.1007/jhep08%282014%29030
• Keywords: Jets, Hadronic Colliders.
• Public URL: https://durham-repository.worktribe.com/output/1418128