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

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journal contribution
posted on 2023-06-09, 18:52 authored by N L Abraham, Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, Samuel Jones, Antonella De SantoAntonella De Santo, Fabrizio SalvatoreFabrizio Salvatore, Kate ShawKate Shaw, Thomas StevensonThomas Stevenson, K Suruliz, Mark SuttonMark Sutton, Fabio Tresoldi, Fabrizio Trovato, Iacopo Vivarelli, E Winkels, The ATLAS Collaboration, others
A search for new charged massive gauge bosons, W_, is performed with the ATLAS detector at the LHC. Data were collected in proton–proton collisions at a center-of-mass energy of vs=13TeVand correspond to an integrated luminosity of 36.1fb-1. This analysis searches for W_bosons in the W_?t¯bdecay channel in final states with an electron or muon plus jets. The search covers resonance masses between 0.5 and 5.0TeVand considers right-handed W_bosons. No significant deviation from the Standard Model (SM) expectation is observed and upper limits are set on the W_?t¯bcross section times branching ratio and the W_boson effective couplings as a function of the W_boson mass. For right-handed W_bosons with coupling to the SM particles equal to the SM weak coupling constant, masses below 3.15TeVare excluded at the 95% confidence level. This search is also combined with a previously published ATLAS result for W_?t¯bin the fully hadronic final state. Using the combined searches, right-handed W_bosons with masses below 3.25TeVare excluded at the 95% confidence level.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physics Letters B

ISSN

0370-2693

Publisher

Elsevier

Volume

788

Page range

347-370

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2019-09-18

First Open Access (FOA) Date

2019-09-18

First Compliant Deposit (FCD) Date

2019-09-02

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