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
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| Publication date | 2015 |
| Journal | Physics Letters B |
| Volume | Issue number | 743 |
| Pages (from-to) | 235-255 |
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| 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.
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| Document type | Article |
| Note | ATLAS Collaboration |
| Language | English |
| Published at | https://doi.org/10.1016/j.physletb.2015.02.051 |
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Search for W′→tb¯ in the lepton plus jets final state
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