Search for a multi-Higgs-boson cascade in W[superscript +]W[superscript −]b[¯ over b] events with the ATLAS detector in pp collisions at √s = 8 TeV
Author(s)Taylor, Frank E.
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A search is presented for new particles in an extension to the Standard Model that includes a heavy Higgs boson (H[superscript 0]), an intermediate charged Higgs-boson pair (H[superscript ±]), and a light Higgs boson (h[superscript 0]). 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 20.3 fb[superscript −1], collected by the ATLAS detector in proton-proton collisions at √s = 8 TeV 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 H[superscript 0] and H[superscript ±] masses, with m[subscript h]0 fixed at 125 GeV.
DepartmentMassachusetts Institute of Technology. Department of Physics
Physical Review D
American Physical Society
Aad, G., T. Abajyan, B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, et al. “Search for a multi-Higgs-boson cascade in W[superscript +]W[superscript −]b[¯ over b] events with the ATLAS detector in pp collisions at √s = 8 TeV.” Phys. Rev. D 89, no. 3 (February 2014). © 2014 CERN, for the ATLAS Collaboration
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