Article open access publication

Search for doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton–proton collisions at s=13TeV

European Physical Journal C, Springer Nature, ISSN 1434-6044

Volume 78, 3, 2018

DOI:10.1140/epjc/s10052-018-5661-z, Dimensions: pub.1101405280, PMC: PMC6560737, PMID: 31265007,

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Description

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 ± ± = 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 ± ± ± ± ) = 100 % and both the expected and observed mass limits are above 450 GeV for B ( H ± ± ± ± ) = 10 % and any combination of partial branching ratios.

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Times Cited: 36

Field Citation Ratio (FCR): 30.79

Relative Citation ratio (RCR): 0.79

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