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

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

doi:10.1007/jhep08(2014)030

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

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

Authors

Danilo Ferreira de Lima

Andreas Papaefstathiou

Professor Michael Spannowsky michael.spannowsky@durham.ac.uk
Director

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
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.

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Copyright Statement
Open Access, © The Authors. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.