# 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

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%
Type de document :
Article dans une revue
Physics Letters B, Elsevier, 2015, 743, pp.235-255. 〈10.1016/j.physletb.2015.02.051〉

http://hal.in2p3.fr/in2p3-01075729
Contributeur : Emmanuelle Vernay <>
Soumis le : lundi 20 octobre 2014 - 09:50:34
Dernière modification le : mardi 5 juin 2018 - 16:40:03

### Citation

G. Aad, S. Albrand, J. Brown, J. Collot, S. Crépé-Renaudin, et al.. 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. Physics Letters B, Elsevier, 2015, 743, pp.235-255. 〈10.1016/j.physletb.2015.02.051〉. 〈in2p3-01075729〉

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