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URN: urn:nbn:de:swb:90-420708

Search for W -> tb decays in the lepton plus jets final state in pp collisions at root s=8 TeV

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Knünz, V.; Krammer, M.; Krätschmer, I.; ... mehr

Results are presented from a search for the production of a heavy gauge boson W′ decaying into a top and a bottom quark, using a data set collected by the CMS experiment at s√ = 8 TeV and corresponding to an integrated luminosity of 19.5 fb −1 . Various models of W′-boson production are studied by allowing for an arbitrary combination of left- and right-handed couplings. The analysis is based on the detection of events with a lepton (e , μ ), jets, and missing transverse energy in the final state. No evidence for W′-boson production is found and 95% confidence level upper limits on the production cross section times branching fraction are obtained. For W ′ bosons with purely right-handed couplings, and for those with left-handed couplings assuming no interference effects, the observed 95% confidence level limit is M (W′) > 2 . 05 TeV. For W ′ bosons with purely left-handed couplings, including interference effects, the observed 95% confidence level limit is M (W′) > 1 . 84 TeV. The results presented in this paper are the most str ... mehr

Zugehörige Institution(en) am KIT Institut für Experimentelle Kernphysik (IEKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2014
Sprache Englisch
Identifikator ISSN: 1029-8479
KITopen ID: 1000042070
Erschienen in Journal of High Energy Physics
Band 2014
Heft 5
Seiten 1-35
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
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