Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/115267
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Type: Journal article
Title: Search for doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton–proton collisions at √s = 13TeV
Other Titles: Search for doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton-proton collisions at root s = 13 TeV
Author: Aaboud, M.
Aad, G.
Abbott, B.
Abdinov, O.
Abeloos, B.
Abidi, S.
AbouZeid, O.
Abraham, N.
Abramowicz, H.
Abreu, H.
Abreu, R.
Abulaiti, Y.
Acharya, B.
Adachi, S.
Adamczyk, L.
Adelman, J.
Adersberger, M.
Adye, T.
Affolder, A.
Afik, Y.
et al.
Citation: European Physical Journal C, 2018; 78(3):199-1-199-34
Publisher: Springer
Issue Date: 2018
ISSN: 1434-6044
1434-6052
Statement of
Responsibility: 
M. Aaboud ... D. Duvnjak ... P. Jackson ... L. Lee ... A. Petridis ... M.J. White ... [et al.] (The ATLAS Collaboration)
Abstract: A 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.
Keywords: ATLAS Collaboration
Rights: © CERN for the benefit of the ATLAS collaboration 2018. This article is an open access publication
RMID: 0030084674
DOI: 10.1140/epjc/s10052-018-5661-z
Appears in Collections:Physics publications

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