Boosting Higgs pair production in the bb‾bb‾ final state with multivariate techniques

J. Katharina Behr, Daniela Bortoletto, James A. Frost, Nathan P. Hartland, Cigdem Issever, Juan Rojo

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

The measurement of Higgs pair production will be a cornerstone of the LHC program in the coming years. Double Higgs production provides a crucial window upon the mechanism of electroweak symmetry breaking and has a unique sensitivity to the Higgs trilinear coupling. We study the feasibility of a measurement of Higgs pair production in the bb‾bb‾ final state at the LHC. Our analysis is based on a combination of traditional cut-based methods with state-of-the-art multivariate techniques. We account for all relevant backgrounds, including the contributions from light and charm jet mis-identification, which are ultimately comparable in size to the irreducible 4b QCD background. We demonstrate the robustness of our analysis strategy in a high pileup environment. For an integrated luminosity of L = 3 ab-1, a signal significance of S/√B similar or equal to 3 is obtained, indicating that the bb‾bb‾ final state alone could allow for the observation of double Higgs production at the High-Luminosity LHC.
Original languageEnglish
Article number386
Pages (from-to)1-31
Number of pages31
JournalEuropean Physical Journal C. Particles and Fields
Volume76
Issue number7
DOIs
Publication statusPublished - 8 Jul 2016

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pair production
luminosity
Luminance
broken symmetry
quantum chromodynamics
sensitivity

Bibliographical note

47 pages, 22 figures. v2: updated references, added comparison of post-MVA kinematic distributions. v3: matches published version in EPJC

Keywords

  • hep-ph
  • hep-ex

Cite this

Behr, J. Katharina ; Bortoletto, Daniela ; Frost, James A. ; Hartland, Nathan P. ; Issever, Cigdem ; Rojo, Juan. / Boosting Higgs pair production in the bb‾bb‾ final state with multivariate techniques. In: European Physical Journal C. Particles and Fields. 2016 ; Vol. 76, No. 7. pp. 1-31.
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Boosting Higgs pair production in the bb‾bb‾ final state with multivariate techniques. / Behr, J. Katharina; Bortoletto, Daniela; Frost, James A.; Hartland, Nathan P.; Issever, Cigdem; Rojo, Juan.

In: European Physical Journal C. Particles and Fields, Vol. 76, No. 7, 386, 08.07.2016, p. 1-31.

Research output: Contribution to JournalArticleAcademicpeer-review

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