Search for massive WH resonances decaying into the l nu b anti-b final state at sqrt(s) = 8 TeV
(2016) European Physical Journal C. Particles and Fields — Vol. C76, n° 5, p. 237 (2016)
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- Abstract
- A search for a massive resonance W' decaying into a W and a Higgs boson in the l nu b anti-b (l = e, mu) final state is presented. Results are based on data corresponding to an integrated luminosity of 19.7 inverse femtobarns of proton-proton collisions at sqrt(s) = 8 TeV, collected using the CMS detector at the LHC. For a high-mass ( greater than 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.
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CMS, Basegmez, S., Beluffi, C., Bondu, O., Brochet, S., Bruno, G., Caudron, A., Ceard, L., Da Silveira, G. G., Delaere, C., Favart, D., Forthomme, L., Giammanco, A., Hollar, J., Jafari, A., Jez, P., Komm, M., Lemaitre, V., Mertens, A., et al. (2016). Search for massive WH resonances decaying into the l nu b anti-b final state at sqrt(s) = 8 TeV. European Physical Journal C. Particles and Fields, C76(5), 237. https://doi.org/10.1140/epjc/s10052-016-4067-z (Original work published 2016)