Search for W′→tb decays in the lepton + jets final state in pp collisions at √s = 8TeV
Journal
Journal of High Energy Physics
Journal Volume
2014
Journal Issue
5
Date Issued
2014
Author(s)
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 Wboson 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 lefthanded 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.
SDGs
Type
journal article