Search for massive WH resonances decaying into the ℓνb[bar over b] final state at √s = 8 TeV
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10052_2016_Article_4067.pdf
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Author(s)
Khachatryan, V.
Sirunyan, A. M
Tumasyan, A.
Adam, W.
Asilar, E.
Bergauer, T.
Brandstetter, J.
Brondolin, E.
Dragicevic, M.
Erö, J.
Date Issued
April 2016
Journal
The European Physical Journal C
Publisher
Springer Berlin Heidelberg
Citation
The CMS Collaboration, et al. “Search for massive WH resonances decaying into the ℓνb[bar over b] final state at √s = 8 TeV.” The European Physical Journal C, vol. 76, no. 5, May 2016.
Version
Final published version
Abstract
A search for a massive resonance W′ decaying into a W and a Higgs boson in the ℓνb[bar over b] (ℓ=e, μ) final state is presented. Results are based on data corresponding to an integrated luminosity of 19.7 fb[superscript −1] of proton–proton collisions at s√s=8 TeV, collected using the CMS detector at the LHC. For a high-mass (≳ 1 TeV ) resonance, the two bottom quarks coming from the Higgs boson decay are reconstructed as a single jet, which can be tagged by placing requirements on its substructure and flavour. Exclusion limits at 95 % confidence level are set on the production cross section of a narrow resonance decaying into WH, as a function of its mass. In the context of a little Higgs model, a lower limit on the W′ mass of 1.4 TeV is set. In a heavy vector triplet model that mimics the properties of composite Higgs models, a lower limit on the W′ mass of 1.5 TeV is set. In the context of this model, the results are combined with related searches to obtain a lower limit on the W′ mass of 1.8 TeV, the most restrictive to date for decays to a pair of standard model bosons.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
http://dx.doi.org/10.1140/epjc/s10052-016-4067-z
