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Search for massive WH resonances decaying into the ℓνbb¯ final state at √s = 8 TeV

CMS Collaboration; Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V.M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; Knünz, V.; ... mehr

Abstract (englisch): A search for a massive resonance W` decaying into a W and a Higgs boson in the ℓνbb¯(ℓ = e, μ) final state is presented. Results are based on data corresponding to an integrated luminosity of 19.7fb −1 of proton–proton collisions at √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.

Zugehörige Institution(en) am KIT Institut für Experimentelle Kernphysik (IEKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.1140/epjc/s10052-016-4067-z
ISSN: 1434-6044
URN: urn:nbn:de:swb:90-548090
KITopen ID: 1000054809
Erschienen in European Physical Journal C
Band 76
Heft 5
Seiten 237
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
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