Search for W ′ →tb ¯ in the lepton plus jets final state in proton-proton collisions at a centre-of-mass energy of √s= 8 TeV with the ATLAS detector
Publisher DOI
Abstract
A search for new charged massive gauge bosons, called W ′ , is performed with the ATLAS detector at the LHC, in proton-proton collisions at a centre-of-mass energy of √s= 8 TeV, using a dataset corresponding to an integrated luminosity of 20.3 fb⁻¹. This analysis searches for W ′ bosons in the W ′ →tb ¯ decay channel in final states with electrons or muons, using a multivariate method based on boosted decision trees. The search covers masses between 0.5 and 3.0 TeV, for right-handed or left-handed W ′ bosons. No significant deviation from the Standard Model expectation is observed and limits are set on the W ′ →tb ¯ cross-section times branching ratio and on the W ′ -boson effective couplings as a function of the W ′-boson mass using the CL s procedure. For a left-handed (right-handed) W ′ boson, masses below 1.70 (1.92) TeV are excluded at 95% confidence level.
Date Issued
2015
Publication Type
Article
Subject(s)
Language(s)
en
Author(s)
ATLAS, Collaboration | |
Kabana, Sonja |
Additional Credits
Journal
Physics letters. B
Publisher
Elsevier
ISSN
0370-2693
Access(Rights)
open.access