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 √s=13TeVand correspond to an integrated luminosity of 36.1fb−1. This analysis searches for Wbosons 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 Wbosons. 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 Wboson effective couplings as a function of the Wboson mass. For right-handed Wbosons 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 Wbosons with masses below 3.25TeVare excluded at the 95% confidence level. ©2018 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license
De Castro, S., Fabbri, L., Gabrielli, A., Rinaldi, L., Semprini Cesari, N., Sioli, M., et al. (2019). Search for vector-boson resonances decaying to a top quark and bottom quark in the lepton plus jets final state in pp collisions at √s=13 TeV with the ATLAS detector. PHYSICS LETTERS. SECTION B, 788, 347-370 [10.1016/j.physletb.2018.11.032].
Search for vector-boson resonances decaying to a top quark and bottom quark in the lepton plus jets final state in pp collisions at √s=13 TeV with the ATLAS detector
De Castro , S.;Fabbri , L.;Gabrielli , A.;Rinaldi , L.;Semprini Cesari , N.;Sioli , M.;Villa , M.;Zoccoli , A.;Bellagamba , L.;Boscherini , D.;Bruni , A.;D’Amen , G.;Giacobbe , B.;Polini , A.;Sbarra , C.;Franchini , M.;Mengarelli , A.;Romano , M.;Valentinetti , S.;Alberghi , G. L.;Biondi , S.;Fabbri , F.;Lasagni Manghi , F;Massa , L.;Ucchielli , G.;Vittori , C.;Alfonsi , F:;Cabras , G.;Giangiacomi , N.;
2019
Abstract
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 √s=13TeVand correspond to an integrated luminosity of 36.1fb−1. This analysis searches for Wbosons 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 Wbosons. 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 Wboson effective couplings as a function of the Wboson mass. For right-handed Wbosons 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 Wbosons with masses below 3.25TeVare excluded at the 95% confidence level. ©2018 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY licenseFile | Dimensione | Formato | |
---|---|---|---|
main.pdf
accesso aperto
Tipo:
Versione (PDF) editoriale
Licenza:
Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione
1.99 MB
Formato
Adobe PDF
|
1.99 MB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.