Search for Doubly Charged Higgs Boson Production in Multi-Lepton Final States with the ATLAS Detector Using Proton–Proton Collisions at √s = 13 TeV

dc.contributor.VIAF250674117 (Izen, JM)en_US
dc.contributor.authorAaboud, M.en_US
dc.contributor.authorAad, G.en_US
dc.contributor.authorAbbott, B.en_US
dc.contributor.authorAbdinov, O.en_US
dc.contributor.authorAbeloos, B.en_US
dc.contributor.authorAbidi, S. H.en_US
dc.contributor.authorAbouZeid, O. S.en_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.authorMeirose, Bernharden_US
dc.contributor.authorReeves, Kendallen_US
dc.contributor.authorATLAS Collaborationen_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.contributor.utdAuthorMeirose, Bernharden_US
dc.contributor.utdAuthorReeves, Kendallen_US
dc.description.abstractA search for doubly charged Higgs bosons with pairs of prompt, isolated, highly energetic leptons with the same electric charge is presented. The search uses a proton–proton collision data sample at a centre-of-mass energy of 13 TeV corresponding to 36.1 fb⁻¹ of integrated luminosity recorded in 2015 and 2016 by the ATLAS detector at the LHC. This analysis focuses on the decays H^{±±} → e^±e^±, H± ±→ e±μ± and H^{±±} → μ^±μ^±, fitting the dilepton mass spectra in several exclusive signal regions. No significant evidence of a signal is observed and corresponding limits on the production cross-section and consequently a lower limit on m(H^{±±}) are derived at 95% confidence level. With ℓ^±ℓ^± = e^±e^± / μ^±μ^± / e^±μ^±, the observed lower limit on the mass of a doubly charged Higgs boson only coupling to left-handed leptons varies from 770 to 870 GeV (850 GeV expected) for ℬ(H^{±±} → ℓ^±ℓ^±) = 100 % and both the expected and observed mass limits are above 450 GeV for ℬ(H^{±±} → ℓ^±ℓ^±) = 10 % and any combination of partial branching ratios.en_US
dc.description.departmentSchool of Natural Sciences and Mathematicsen_US
dc.identifier.bibliographicCitationAaboud, M., G. Aad, B. Abbott, O. Abdinov, et al. 2018. "Search for doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton–proton collisions at √s = 13 TeV." European Physical Journal C 78(3), doi:10.1140/epjc/s10052-018-5661-zen_US
dc.publisherSpringer New York LLCen_US
dc.rightsCC BY 4.0 (Attribution)en_US
dc.rights©2018 CERN, for the ATLAS Collaborationen_US
dc.sourceEuropean Physical Journal C
dc.subjectProton-proton interactionsen_US
dc.subjectLeptons (Nuclear physics)en_US
dc.subjectHiggs bosonsen_US
dc.subjectBranching ratios (Nuclear physics)en_US
dc.titleSearch for Doubly Charged Higgs Boson Production in Multi-Lepton Final States with the ATLAS Detector Using Proton–Proton Collisions at √s = 13 TeVen_US


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