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Scientific article
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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

ContributorsATLAS Collaboration
Published inPhysics letters. B, vol. 743, p. 235-255
Collection
  • Open Access - SCOAP3
Publication date2015
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 CLs procedure. For a left-handed (right-handed) W′ boson, masses below 1.70 (1.92) TeV are excluded at 95% confidence level.

Citation (ISO format)
ATLAS Collaboration. 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. In: Physics letters. B, 2015, vol. 743, p. 235–255. doi: 10.1016/j.physletb.2015.02.051
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Article (Published version)
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ISSN of the journal0370-2693
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Creation04/27/2015 10:30:32 AM
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