Search for tth production in the all-jet final state in proton-proton collisions at √s = 13 TeV

The CMS collaboration

Research output: Contribution to journalArticle

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Abstract

A search is presented for the associated production of a Higgs boson with a top quark pair in the all-jet final state. Events√ containing seven or more jets are selected from a sample of proton-proton collisions at s = 13 TeV collected with the CMS detector at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb−1. To separate the ttH signal from the irreducible tt + bb background, the analysis assigns leading order matrix element signal and background probability densities to each event. A likelihood-ratio statistic based on these probability densities is used to extract the signal. The results are provided in terms of an observed ttH signal strength relative to the standard model production cross section µ = σ/σSM, assuming a Higgs boson mass of 125 GeV. The best fit value is ˆµ = 0.9 ± 0.7(stat) ± 1.3(syst) = 0.9 ± 1.5 (tot), and the observed and expected upper limits are, respectively, µ < 3.8 and < 3.1 at 95% confidence levels.

Original languageEnglish (US)
Article number101
Pages (from-to)1-45
Number of pages45
JournalJournal of High Energy Physics
Volume2018
Issue number6
DOIs
StatePublished - Jan 1 2018

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Keywords

  • Hadron-Hadron scattering (experiments)
  • Higgs physics
  • Top physics

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