Search for vector-boson resonances decaying into a top quark and a bottom quark using $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector

The ATLAS collaboration
JHEP 12 (2023) 073, 2023.

Abstract (data abstract)
A search for a new massive charged gauge boson, $W'$, is performed with the ATLAS detector at the LHC. The dataset used in this analysis was collected in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}~=~13$ TeV, and corresponds to an integrated luminosity of 139 fb$^{-1}$. The invariant mass of the $W'$ boson is reconstructed in the decay mode $W' \rightarrow tb$. The result is interpreted in terms of a $W'$ boson with purely right-handed or left-handed chirality in a mass range of 0.5-6 TeV. Different values for the coupling of the $W'$ boson to the top and bottom quarks are considered, taking into account interference with single-top-quark production in the $s$-channel. No significant deviation from the background prediction is observed. The results are expressed as upper limits on the $W' \rightarrow tb$ production cross-section times branching ratio as a function of the $W'$ boson mass and in the plane of the coupling vs the $W'$-boson mass.

  • Overview

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  • 0l_sr1

    Data from fig. 9b.

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    Distribution (events/100 GeV) of the reconstructed $m_{tb}$ for data and backgrounds in the 0-lepton channel's signal region 1 after the...

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    Data from fig. 9c.

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    Distribution (events/100 GeV) of the reconstructed $m_{tb}$ for data and backgrounds in the 0-lepton channel's signal region 2 after the...

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    Data from fig. 9d.

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    Distribution (events/100 GeV) of the reconstructed $m_{tb}$ for data and backgrounds in the 0-lepton channel's the signal region 3 after...

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    Data from fig. 9a.

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    Distribution (events/100 GeV) of the reconstructed $m_{tb}$ for data and backgrounds in the 0-lepton channel's validation region before the fit...

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    Data from fig. 11a.

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    Reconstructed $m_{tb}$ distributions (events/50 GeV) for data and backgrounds in the 1-lepton channel's 2j1b signal region after the background-only fit...

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    Data from fig. 11b.

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    Reconstructed $m_{tb}$ distributions (events/50 GeV) for data and backgrounds in the 1-lepton channel's 3j1b signal region after the background-only fit...

  • 1l_sr_2j2b

    Data from fig. 11c.

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    Reconstructed $m_{tb}$ distributions (events/50 GeV) for data and backgrounds in the 1-lepton channel's 2j2b signal region after the background-only fit...

  • 1l_sr_3j2b

    Data from fig. 11d.

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    Reconstructed $m_{tb}$ distributions (events/50 GeV) for data and backgrounds in the 1-lepton channel's 3j2b signal region after the background-only fit...

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    Data from fig. 10a.

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    Reconstructed $m_{tb}$ distributions (events/50 GeV) for data and backgrounds in the 1-lepton channel's 2j1b control region after the background-only fit...

  • 1l_cr_3j1b

    Data from fig. 10b.

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    Reconstructed $m_{tb}$ distributions (events/50 GeV) for data and backgrounds in the 1-lepton channel's 3j1b control region after the background-only fit...

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    Data from fig. 10c.

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    Reconstructed $m_{tb}$ distributions (events/50 GeV) for data and backgrounds in the 1-lepton channel's 2j1b validation region after the background-only fit...

  • 1l_vr_3j1b

    Data from fig. 10d.

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    Reconstructed $m_{tb}$ distributions (events/50 GeV) for data and backgrounds in the 1-lepton channel's 3j1b validation region after the background-only fit...

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    Data from fig. 13b.

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    Observed and expected 95% CL limits on the cross-section times branching ratio for the production of a $W^{\prime}$ boson with...

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    Data from fig. 13a.

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    Observed and expected 95% CL limits on the cross-section times branching ratio for the production of a $W^{\prime}$ boson with...

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    Data from fig. 13c.

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    Observed and expected 95% CL limits on the cross-section times branching ratio for the production of a $W^{\prime}$ boson with...

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    Data from fig. 12b.

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    Observed and expected 95% CL limits on the cross-section times branching ratio for the production of a $W^{\prime}$ boson with...

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    Data from fig. 12a.

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    Observed and expected 95% CL limits on the cross-section times branching ratio for the production of a $W^{\prime}$ boson with...

  • limit_rh_gf20

    Data from fig. 12c.

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    Observed and expected 95% CL limits on the cross-section times branching ratio for the production of a $W^{\prime}$ boson with...

  • contour_lh

    Data from fig. 14b.

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    95% CL limits on the coupling value ($g^{\prime}/g$) and the $W^{\prime}$-boson mass for left-handed $W^{\prime}$-boson couplings. The area above the...

  • contour_rh

    Data from fig. 14a.

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    95% CL limits on the coupling value ($g^{\prime}/g$) and the $W^{\prime}$-boson mass for right-handed $W^{\prime}$-boson couplings. The area above the...

  • acc_0l_lh_gf10

    Data from fig. 5b.

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    The product of fiducial acceptance and selection efficiency for the three signal regions of the 0-lepton channel as a function...

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    Data from fig. 3b of auxiliary material.

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    The product of fiducial acceptance and selection efficiency for the three signal regions of the 0-lepton channel as a function...

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    Data from fig. 7b of auxiliary material.

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    The product of fiducial acceptance and selection efficiency for the three signal regions of the 0-lepton channel as a function...

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    Data from fig. 8b.

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    The product of fiducial acceptance and selection efficiency for the four signal regions of the 1-lepton channel as a function...

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    The product of fiducial acceptance and selection efficiency for the four signal regions of the 1-lepton channel as a function...

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    Data from fig. 8b of auxiliary material.

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    The product of fiducial acceptance and selection efficiency for the four signal regions of the 1-lepton channel as a function...

  • acc_0l_rh_gf10

    Data from fig. 5a.

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    The product of fiducial acceptance and selection efficiency for the three signal regions of the 0-lepton channel as a function...

  • acc_0l_rh_gf05

    Data from fig. 3a of auxiliary material.

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    The product of fiducial acceptance and selection efficiency for the three signal regions of the 0-lepton channel as a function...

  • acc_0l_rh_gf20

    Data from fig. 7a of auxiliary material.

    10.17182/hepdata.142662.v1/t30

    The product of fiducial acceptance and selection efficiency for the three signal regions of the 0-lepton channel as a function...

  • acc_1l_rh_gf10

    Data from fig. 8a.

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    The product of fiducial acceptance and selection efficiency for the four signal regions of the 1-lepton channel as a function...

  • acc_1l_rh_gf05

    Data from fig. 4a of auxiliary material.

    10.17182/hepdata.142662.v1/t32

    The product of fiducial acceptance and selection efficiency for the four signal regions of the 1-lepton channel as a function...

  • acc_1l_rh_gf20

    Data from fig. 8a of auxiliary material.

    10.17182/hepdata.142662.v1/t33

    The product of fiducial acceptance and selection efficiency for the four signal regions of the 1-lepton channel as a function...

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