A search for W′-boson production in the W′→tb¯→qq¯′bb¯ decay channel is presented using 36.1fb−1of 13 TeV proton–proton collision data collected by the ATLAS detector at the Large Hadron Collider in 2015 and 2016. The search is interpreted in terms of both a left-handed and a right-handed chiral W′boson within the mass range 1–5 TeV. Identification of the hadronically decaying top quark is performed using jet substructure tagging techniques based on a shower deconstruction algorithm. No significant deviation from the Standard Model prediction is observed and the results are expressed as upper limits on the W′→tb¯ production cross-section times branching ratio as a function of the W′-boson mass. These limits exclude W′bosons with right-handed couplings with masses below 3.0 TeV and W′bosons with left-handed couplings with masses below 2.9 TeV, at the 95% confidence level.

Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abidi, S.H., et al. (2018). Search for W′  →  tb decays in the hadronic final state using pp collisions at √s=13TeV with the ATLAS detector. PHYSICS LETTERS. SECTION B, 781, 327-348 [10.1016/j.physletb.2018.03.036].

Search for W′  →  tb decays in the hadronic final state using pp collisions at √s=13TeV with the ATLAS detector

Ceradini, F.;Di Micco, B.;Di Nardo, R.;Orestano, D.;Petrucci, F.;