Search for W' → tb decays in the lepton + jets final state in pp collisions at s√ = 8 TeV

CMS Collaboration

Research output: Contribution to journalArticle

Abstract

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, ?), 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 stringent limits published to date.
Original languageEnglish
Article number108
Pages (from-to)1-31
JournalThe Journal of high energy physics
Volume2014
Issue number5
Publication statusPublished - 23 May 2014

Keywords

  • CMS
  • Physics
  • Hadron-Hadron scattering
  • Exotics

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