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

Ferreira de Lima, Danilo and Papaefstathiou, Andreas and Spannowsky, Michael (2014) 'Standard model Higgs boson pair production in the ( bb¯ )( bb¯ ) final state.', Journal of high energy physics., 2014 (8). 030.

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.

Item Type:Article
Keywords:Jets, Hadronic Colliders.
Full text:(VoR) Version of Record
Available under License - Creative Commons Attribution.
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1007/JHEP08(2014)030
Publisher 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.
Date accepted:09 July 2014
Date deposited:27 April 2015
Date of first online publication:06 August 2014
Date first made open access:No date available

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