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Type: Journal article
Title: Search for a multi-Higgs-boson cascade in W⁺W⁻bb¯ events with the ATLAS detector in pp collisions at √s=8  TeV
Other Titles: Search for a multi-Higgs-boson cascade in W+W- bb -bar events with the ATLAS detector in pp collisions at root s=8TeV
Author: Aad, G.
ATLAS Collaboration
Citation: Physical Review D: Particles, Fields, Gravitation and Cosmology, 2014; 89(3):032002-1-032002-23
Publisher: American Physical Society
Issue Date: 2014
ISSN: 1550-2368
Statement of
G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni ... M. White ... et al. (The ATLAS Collaboration)
Abstract: A search is presented for new particles in an extension to the Standard Model that includes a heavy Higgs boson (H0), an intermediate charged Higgs-boson pair (H+/-), and a light Higgs boson (h0). The analysis searches for events involving the production of a single heavy neutral Higgs boson which decays to the charged Higgs boson and a W boson, where the charged Higgs boson subsequently decays into a W boson and the lightest neutral Higgs boson decaying to a bottom-antibottom-quark pair. Such a cascade results in a W-boson pair and a bottom-antibottom-quark pair in the final state. Events with exactly one lepton, missing transverse momentum, and at least four jets are selected from a data sample corresponding to an integrated luminosity of 20.3fb -1, collected by the ATLAS detector in proton-proton collisions at root s=8TeV at the LHC. The data are found to be consistent with Standard Model predictions, and 95% confidence-level upper limits are set on the product of cross section and branching ratio. These limits range from 0.065 to 43 pb as a function of H0 and H+/- masses, with mh0 fixed at 125 GeV.
Rights: © 2014 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published articles title, journal citation, and DOI.
DOI: 10.1103/PhysRevD.89.032002
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