Abstract

The first measurement of the inclusive and normalised differential cross sections of single top quark production in association with a W boson in proton-proton collisions at a centre-of-mass energy of 13.6 TeV is presented. The data were recorded with the CMS detector at the LHC in 2022, and correspond to an integrated luminosity of 34.7 fb$^{-1}$. The analysed events contain one muon and one electron in the final state. For the inclusive measurement, multivariate discriminants exploiting the kinematic properties of the events are used to separate the signal from the dominant top quark-antiquark production background. A cross section of 82.3 $\pm$ 2.1 (stat) ${}^{+9.9}_{-9.7}$ (syst) $\pm$ 3.3 (lumi) pb is obtained, consistent with the predictions of the standard model. A fiducial region is defined according to the detector acceptance to perform the differential measurements. The resulting differential distributions are unfolded to particle level and show good agreement with the predictions at next-to-leading order in perturbative quantum chromodynamics.

Figure 6a

Data from Figure 6 (top left), located on page 17.

10.17182/hepdata.150675.v1/t1

The distribution of the RF output for events in the 1j1b region. The number of observed events (points) and estimated...
Figure 6b

Data from Figure 6 (top right), located on page 17.

10.17182/hepdata.150675.v1/t2

The distribution of the RF output for events in the 2j1b region. The number of observed events (points) and estimated...
Figure 6c

Data from Figure 6 (bottom), located on page 17.

10.17182/hepdata.150675.v1/t3

The distribution of the Subleading jet $p_{T}$ for events in the 2j2b region. The number of observed events (points) and...
Cross section

Data from page 16.

10.17182/hepdata.150675.v1/t4

Observed and theoretical cross sections. In the observed, the first uncertainty is statistical, the second is the systematic, and the...
Table 3

Data from Table 3, located on page 16.

10.17182/hepdata.150675.v1/t5

The number of estimated signal and background events after the fit in the 1j1b, 2j1b, and 2j2b regions compared to...
Figure 9a

Data from Figure 9 (top left), located on page 20.

10.17182/hepdata.150675.v1/t6

Normalised fiducial differential tW production cross section as a function of the $Leading$ $lepton$ $p_{T}$. The horizontal bars on the...
Figure 9b

Data from Figure 9 (top right), located on page 20.

10.17182/hepdata.150675.v1/t7

Normalised fiducial differential tW production cross section as a function of the $p_{Z}(e^{\pm}, \mu^{\pm}, j)$. The horizontal bars on the...
Figure 9c

Data from Figure 9 (middle left), located on page 20.

10.17182/hepdata.150675.v1/t8

Normalised fiducial differential tW production cross section as a function of the $Jet$ $p_{T}$. The horizontal bars on the points...
Figure 9d

Data from Figure 9 (middle right), located on page 20.

10.17182/hepdata.150675.v1/t9

Normalised fiducial differential tW production cross section as a function of the $m(e^{\pm}, \mu^{\pm}, j)$. The horizontal bars on the...
Figure 9e

Data from Figure 9 (bottom left), located on page 20.

10.17182/hepdata.150675.v1/t10

Normalised fiducial differential tW production cross section as a function of the $\Delta\phi(e^{\pm}, \mu^{\pm})/\pi$. The horizontal bars on the points...
Figure 9f

Data from Figure 9 (bottom right), located on page 20.

10.17182/hepdata.150675.v1/t11

Normalised fiducial differential tW production cross section as a function of the $m_{T}(e^{\pm}, \mu^{\pm}, j, p_{T}^{miss})$. The horizontal bars on...
Tables 4 and 5

Data from Tables 4 and 5 located on page 21.

10.17182/hepdata.150675.v1/t12

The p-values from the goodness-of-fit tests comparing the six differential cross section measurements with the predictions from POWHEG (PH) DR...
Supplemental material: prefit 1j1b RF discriminant bin

Supplemental material.

10.17182/hepdata.150675.v1/t13

Distribution of the RF output for events in the 1j1b region. The number of observed events (points) and estimated signal...
Supplemental material: prefit 2j1b RF discriminant bin

Supplemental material.

10.17182/hepdata.150675.v1/t14

Distribution of the RF output for events in the 2j1b region. The number of observed events (points) and estimated signal...
Supplemental material: prefit 2j2b Subleading jet $p_{T}$

Supplemental material.

10.17182/hepdata.150675.v1/t15

Distribution of the Subleading jet $p_{T}$ for events in the 2j2b region. The number of observed events (points) and estimated...
Supplemental material: Lep1_Pt response matrix

Supplemental material.

10.17182/hepdata.150675.v1/t16

Response matrix between detector and particle level for the $Leading$ $lepton$ $p_{T}$.
Supplemental material: Lep1Lep2Jet1_Pz response matrix

Supplemental material.

10.17182/hepdata.150675.v1/t17

Response matrix between detector and particle level for the $p_{Z}(e^{\pm}, \mu^{\pm}, j)$.
Supplemental material: Jet1_Pt response matrix

Supplemental material.

10.17182/hepdata.150675.v1/t18

Response matrix between detector and particle level for the $Jet$ $p_{T}$.
Supplemental material: Lep1Lep2Jet1_M response matrix

Supplemental material.

10.17182/hepdata.150675.v1/t19

Response matrix between detector and particle level for the $m(e^{\pm}, \mu^{\pm}, j)$.
Supplemental material: Lep1Lep2_DPhi response matrix

Supplemental material.

10.17182/hepdata.150675.v1/t20

Response matrix between detector and particle level for the $\Delta\phi(e^{\pm}, \mu^{\pm})/\pi$.
Supplemental material: Lep1Lep2Jet1MET_Mt response matrix

Supplemental material.

10.17182/hepdata.150675.v1/t21

Response matrix between detector and particle level for the $m_{T}(e^{\pm}, \mu^{\pm}, j, p_{T}^{miss})$.
Supplemental material: Lep1_Pt covariance matrix

Supplemental material.

10.17182/hepdata.150675.v1/t22

Covariance matrix including all uncertainties of the normalised differential cross section in bins of $Leading$ $lepton$ $p_{T}$ in units of...
Supplemental material: Lep1Lep2Jet1_Pz covariance matrix

Supplemental material.

10.17182/hepdata.150675.v1/t23

Covariance matrix including all uncertainties of the normalised differential cross section in bins of $p_{Z}(e^{\pm}, \mu^{\pm}, j)$ in units of...
Supplemental material: Jet1_Pt covariance matrix

Supplemental material.

10.17182/hepdata.150675.v1/t24

Covariance matrix including all uncertainties of the normalised differential cross section in bins of $Jet$ $p_{T}$ in units of $1/GeV^{2}$.
Supplemental material: Lep1Lep2Jet1_M covariance matrix

Supplemental material.

10.17182/hepdata.150675.v1/t25

Covariance matrix including all uncertainties of the normalised differential cross section in bins of $m(e^{\pm}, \mu^{\pm}, j)$ in units of...
Supplemental material: Lep1Lep2_DPhi covariance matrix

Supplemental material.

10.17182/hepdata.150675.v1/t26

Covariance matrix including all uncertainties of the normalised differential cross section in bins of $\Delta\phi(e^{\pm}, \mu^{\pm})/\pi$ in units of 1.
Supplemental material: Lep1Lep2Jet1MET_Mt covariance matrix

Supplemental material.

10.17182/hepdata.150675.v1/t27

Covariance matrix including all uncertainties of the normalised differential cross section in bins of $m_{T}(e^{\pm}, \mu^{\pm}, j, p_{T}^{miss})$ in units...

Figure 6a

Figure 6b

Figure 6c

Cross section

Table 3

Figure 9a

Figure 9b

Figure 9c

Figure 9d

Figure 9e

Figure 9f

Tables 4 and 5

Supplemental material: prefit 1j1b RF discriminant bin

Supplemental material: prefit 2j1b RF discriminant bin

Supplemental material: prefit 2j2b Subleading jet $p_{T}$

Supplemental material: Lep1_Pt response matrix

Supplemental material: Lep1Lep2Jet1_Pz response matrix

Supplemental material: Jet1_Pt response matrix

Supplemental material: Lep1Lep2Jet1_M response matrix

Supplemental material: Lep1Lep2_DPhi response matrix

Supplemental material: Lep1Lep2Jet1MET_Mt response matrix

Supplemental material: Lep1_Pt covariance matrix

Supplemental material: Lep1Lep2Jet1_Pz covariance matrix

Supplemental material: Jet1_Pt covariance matrix

Supplemental material: Lep1Lep2Jet1_M covariance matrix

Supplemental material: Lep1Lep2_DPhi covariance matrix

Supplemental material: Lep1Lep2Jet1MET_Mt covariance matrix

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