Abstract

A search for new physics in top quark production with additional final-state leptons is performed using data collected by the CMS experiment in proton-proton collisions at

\sqrt{s}

= 13 TeV at the LHC during 2016-2018. The data set corresponds to an integrated luminosity of 138 fb

^{- 1}

. Using the framework of effective field theory (EFT), potential new physics effects are parametrized in terms of 26 dimension-six EFT operators. The impacts of EFT operators are incorporated through the event-level reweighting of Monte Carlo simulations, which allows for detector-level predictions. The events are divided into several categories based on lepton multiplicity, total lepton charge, jet multiplicity, and b-tagged jet multiplicity. Kinematic variables corresponding to the transverse momentum (

p_{T}

) of the leading pair of leptons and/or jets as well as the

p_{T}

of on-shell Z bosons are used to extract the 95% confidence intervals of the 26 Wilson coefficients corresponding to these EFT operators. No significant deviation with respect to the standard model prediction is found.

Figure 7

Data from Figure 7, located on page 21.

10.17182/hepdata.138415.v1/t1

The 1 $σ$ and 2 $σ$ uncertainty intervals extracted from the likelihood fits described in Section 7. The intervals are shown for...
Figure 8a

Data from Figure 8 (left), located on page 22.

10.17182/hepdata.138415.v1/t2

Observed $2 Δ N L L$ of a 2D scan for $c_{t W}$ and $c_{t Z}$ with the other WCs profiled.
Figure 8b

Data from Figure 8 (right), located on page 22.

10.17182/hepdata.138415.v1/t3

Observed $2 Δ N L L$ of a 2D scan for $c_{t W}$ and $c_{t Z}$ with the other WCs fixed to their SM...
Figure 9a

Data from Figure 9 (left), located on page 22.

10.17182/hepdata.138415.v1/t4

Observed $2 Δ N L L$ of a 2D scan for $c_{φ Q}^{-}$ and $c_{φ t}$ with the other WCs profiled.
Figure 9b

Data from Figure 9 (right), located on page 22.

10.17182/hepdata.138415.v1/t5

Observed $2 Δ N L L$ of a 2D scan for $c_{t G}$ and $c_{t φ}$ with the other WCs profiled.
Figure 10a

Data from Figure 10 (upper left), located on page 23.

10.17182/hepdata.138415.v1/t6

Observed $2 Δ N L L$ of a 2D scan for $c_{Q t}^{1}$ and $c_{Q t}^{8}$ with the other WCs profiled.
Figure 10b

Data from Figure 10 (upper right), located on page 23.

10.17182/hepdata.138415.v1/t7

Observed $2 Δ N L L$ of a 2D scan for $c_{Q Q}^{1}$ and $c_{Q t}^{8}$ with the other WCs profiled.
Figure 10c

Data from Figure 10 (lower left), located on page 23.

10.17182/hepdata.138415.v1/t8

Observed $2 Δ N L L$ of a 2D scan for $c_{Q t}^{1}$ and $c_{t t}^{1}$ with the other WCs profiled.
Figure 10d

Data from Figure 10 (lower right), located on page 23.

10.17182/hepdata.138415.v1/t9

Observed $2 Δ N L L$ of a 2D scan for $c_{Q Q}^{1}$ and $c_{Q t}^{1}$ with the other WCs profiled.

Figure 7

Figure 8a

Figure 8b

Figure 9a

Figure 9b

Figure 10a

Figure 10b

Figure 10c

Figure 10d

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