Search for vector-boson resonances decaying to a top quark and bottom quark in the lepton plus jets final state in <i>pp</i> collisions at √<i>s</i>=13 TeV with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2904 more authors) (2019) Search for vector-boson resonances decaying to a top quark and bottom quark in the lepton plus jets final state in <i>pp</i> collisions at √<i>s</i>=13 TeV with the ATLAS detector. PHYSICS LETTERS B, 788. pp. 347-370.

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Abstract

A search for new charged massive gauge bosons, $W^\prime$, is performed with the ATLAS detector at the LHC. Data were collected in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 13 TeV and correspond to an integrated luminosity of 36.1 $\textrm{fb}^{-1}$. This analysis searches for $W^\prime$ bosons in the $W^\prime \rightarrow t\bar{b}$ decay channel in final states with an electron or muon plus jets. The search covers resonance masses between 0.5 and 5.0 TeV and considers right-handed $W^\prime$ bosons. No significant deviation from the Standard Model (SM) expectation is observed and upper limits are set on the $W^\prime \rightarrow t\bar{b}$ cross section times branching ratio and the $W^\prime$ boson effective couplings as a function of the $W^\prime$ boson mass. For right-handed $W^\prime$ bosons with coupling to the SM particles equal to the SM weak coupling constant, masses below 3.15 TeV are excluded at the 95% confidence level. This search is also combined with a previously published ATLAS result for $W^\prime \rightarrow t\bar{b}$ in the fully hadronic final state. Using the combined searches, right-handed $W^\prime$ bosons with masses below 3.25 TeV are excluded at the 95% confidence level.

Item Type: Article
Additional Information: 43 pages in total, author list starting page 27, 8 figures, 5 tables, published in PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2016-18/
Uncontrolled Keywords: hep-ex, hep-ex
Depositing User: Symplectic Admin
Date Deposited: 12 Sep 2018 10:55
Last Modified: 14 Oct 2023 09:18
DOI: 10.1016/j.physletb.2018.11.032
Open Access URL: https://doi.org/10.1016/j.physletb.2018.11.032
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3026005