# 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

Abstract:
Results are presented from a search for the production of a heavy gauge boson W&#8242; decaying into a top and a bottom quark, using a data set collected by the CMS experiment at s&#8730; = 8 TeV and corresponding to an integrated luminosity of 19.5 fb &#8722;1 . Various models of W&#8242;-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 , &#956; ), jets, and missing transverse energy in the final state. No evidence for W&#8242;-boson production is found and 95% confidence level upper limits on the production cross section times branching fraction are obtained. For W &#8242; 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&#8242;) > 2 . 05 TeV. For W &#8242; bosons with purely left-handed couplings, including interference effects, the observed 95% confidence level limit is M (W&#8242;) > 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: 1029-8479KITopen 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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