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Scientific article
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English

Search for the Higgs boson produced in association with a W boson and decaying to four b -quarks via two spin-zero particles in pp collisions at 13 TeV with the ATLAS detector

ContributorsATLAS Collaboration
Published inEuropean physical journal. C, Particles and fields, vol. 76, no. 11, 605
Collection
  • Open Access - SCOAP3
Publication date2016
Abstract

This paper presents a dedicated search for exotic decays of the Higgs boson to a pair of new spin-zero particles, H→aa , where the particle a decays to b -quarks and has a mass in the range of 20–60 GeV. The search is performed in events where the Higgs boson is produced in association with a W boson, giving rise to a signature of a lepton (electron or muon), missing transverse momentum, and multiple jets from b -quark decays. The analysis is based on the full dataset of pp collisions at s=13TeV recorded in 2015 by the ATLAS detector at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 3.2 fb-1 . No significant excess of events above the Standard Model prediction is observed, and a 95% confidence-level upper limit is derived for the product of the production cross section for pp→WH times the branching ratio for the decay H→aa→4b . The upper limit ranges from 6.2 pb for an a -boson mass ma=20GeV to 1.5 pb for ma=60GeV .

Citation (ISO format)
ATLAS Collaboration. Search for the Higgs boson produced in association with a W boson and decaying to four b -quarks via two spin-zero particles in pp collisions at 13 TeV with the ATLAS detector. In: European physical journal. C, Particles and fields, 2016, vol. 76, n° 11, p. 605. doi: 10.1140/epjc/s10052-016-4418-9
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Article (Published version)
Identifiers
ISSN of the journal1434-6044
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