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Scientific article
Open access
English

Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at √s = 13 TeV

ContributorsATLAS Collaboration
Published inJournal of High Energy Physics, vol. 1806, 166
Collection
  • Open Access - SCOAP3
Publication date2018
Abstract

A search is conducted for a beyond-the-Standard-Model boson using events where a Higgs boson with mass 125 GeV decays to four leptons (ℓ = e or μ ). This decay is presumed to occur via an intermediate state which contains one or two on-shell, promptly decaying bosons: H → ZX/XX → 4ℓ, where X is a new vector boson Z d or pseudoscalar a with mass between 1 and 60 GeV. The search uses pp collision data collected with the ATLAS detector at the LHC with an integrated luminosity of 36.1 fb −1 at a centre-of-mass energy √s = 13 TeV. No significant excess of events above Standard Model background predictions is observed; therefore, upper limits at 95% confidence level are set on modelindependent fiducial cross-sections, and on the Higgs boson decay branching ratios to vector and pseudoscalar bosons in two benchmark models.

Keywords
  • Beyond Standard Model
  • Hadron-Hadron scattering (experiments)
Citation (ISO format)
ATLAS Collaboration. Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at √s = 13 TeV. In: Journal of High Energy Physics, 2018, vol. 1806, p. 166. doi: 10.1007/JHEP06(2018)166
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Article (Published version)
Identifiers
ISSN of the journal1029-8479
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Creation08/06/2018 8:23:40 AM
First validation08/06/2018 8:23:40 AM
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