Measurement of the $t\bar{t}t\bar{t}$ production cross section in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector

The collaboration
JHEP 11 (2021) 118, 2021.

Abstract (data abstract)
CERN-LHC, ATLAS. Measurements of the of four-top-quark production cross section using events with single lepton (electron or muon) or an opposite-sign lepton pair, in association with multiple jets in proton-proton collisions at a centre-of-mass energy of 13 TeV with 139 fb^-1 of data. The result is combined with the previous measurement performed by the ATLAS Collaboration in the multilepton final state.

• #### Table 01: Fitted $\mu$ in 1L/2LOS

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The results of the fitted signal strength $\mu$ in the 1L/2LOS channel

• #### Table 02: Fitted cross section in 1L/2LOS

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The results of fitted inclusive ${t\bar{t}t\bar{t}}$ cross-section in the 1L/2LOS channel

• #### Table 03: Ranking for the 1L/2LOS channel

Data from Figure 11

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Ranking of the nuisance parameters included in the fit according to their impact on the signal strength $\mu$. The impact...

• #### Table 04: grouped-impact uncertainties

Data from Table 3

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The contribution from different systematic uncertainties to the measured $t\bar{t}t\bar{t}$ production cross section, grouped in categories.

• #### Table 05: Fitted $\mu$ in 1L/2LOS+2LSS/3L

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The results of the fitted signal strength $\mu$ in the 1L/2LOS and 2LSS/3L combined channel.

• #### Table 06: Fitted cross section in 1L/2LOS+2LSS/3L

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The results of fitted inclusive ${t\bar{t}t\bar{t}}$ cross-section in the 1L/2LOS and 2LSS/3L combined channel.

• #### Table 07: 1L,$\geq$9j,$\geq$3b Sum of b-tag score prefit

Data from Figure 05(a)

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Comparison between data and prediction for the distribution of the sum of the pseudo-continuous b-tagging score over the six jets...

• #### Table 08: 1L,$\geq$9j,$\geq$3b Sum of b-tag score postfit

Data from Figure 02(a) auxiliary

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Comparison between data and prediction for the distribution of the sum of the pseudo-continuous b-tagging score over the six jets...

• #### Table 09: 2LOS,$\geq$7j,$\geq$3b Sum of b-tag score prefit

Data from Figure 05(b)

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Comparison between data and prediction for the distribution of the sum of the pseudo-continuous b-tagging score over the six jets...

• #### Table 10: 2LOS,$\geq$7j,$\geq$3b Sum of b-tag score postfit

Data from Figure 02(b) auxiliary

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Comparison between data and prediction for the distribution of the sum of the pseudo-continuous b-tagging score over the six jets...

• #### Table 11: 1L,$\geq$8j,$\geq$3b $H_{T}^{all}$ prefit

Data from Figure 03(a) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 12: 1L,$\geq$8j,$\geq$3b $H_{T}^{all}$ postfit

Data from Figure 03(b) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 13: 2LOS,$\geq$6j,$\geq$3b $H_{T}^{all}$ prefit

Data from Figure 03(c) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 14: 2LOS,$\geq$6j,$\geq$3b $H_{T}^{all}$ postfit

Data from Figure 03(d) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 15: 1L,$\geq$8j,$\geq$3b $N_{j}$ prefit

Data from Figure 04(a) auxiliary

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Comparison between data and prediction for the distribution of number of jets in the 1L,$\geq$8j,$\geq$3b region before the fit.

• #### Table 16: 1L,$\geq$8j,$\geq$3b $N_{j}$ postfit

Data from Figure 04(b) auxiliary

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Comparison between data and prediction for the distribution of number of jets in the 1L,$\geq$8j,$\geq$3b region after the fit.

• #### Table 17: 2LOS,$\geq$6j,$\geq$3b $N_{j}$ prefit

Data from Figure 04(c) auxiliary

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Comparison between data and prediction for the distribution of number of jets in the 2LOS,$\geq$6j,$\geq$3b region before the fit.

• #### Table 18: 2LOS,$\geq$6j,$\geq$3b $N_{j}$ postfit

Data from Figure 04(d) auxiliary

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Comparison between data and prediction for the distribution of number of jets in the 2LOS,$\geq$6j,$\geq$3b region after the fit.

• #### Table 19: 1L,$\geq$8j,$\geq$3b $N_{b}$ prefit

Data from Figure 05(a) auxiliary

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Comparison between data and prediction for the distribution of b-jets multiplicity in the 1L,$\geq$8j,$\geq$3b region before the fit.

• #### Table 20: 1L,$\geq$8j,$\geq$3b $N_{b}$ postfit

Data from Figure 05(b) auxiliary

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Comparison between data and prediction for the distribution of b-jets multiplicity in the 1L,$\geq$8j,$\geq$3b region after the fit.

• #### Table 21: 2LOS,$\geq$6j,$\geq$3b $N_{b}$ prefit

Data from Figure 05(c) auxiliary

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Comparison between data and prediction for the distribution of b-jets multiplicity in the 2LOS,$\geq$6j,$\geq$3b region before the fit.

• #### Table 22: 2LOS,$\geq$6j,$\geq$3b $N_{b}$ postfit

Data from Figure 05(d) auxiliary

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Comparison between data and prediction for the distribution of b-jets multiplicity in the 2LOS,$\geq$6j,$\geq$3b region after the fit.

• #### Table 23: 1L,9j,4b SR BDT score prefit

Data from Figure 06(a) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 1L,9j,4b signal region before the fit.

• #### Table 24: 1L,9j,4b SR BDT score postfit

Data from Figure 07(a)

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Comparison between data and prediction for the distribution of the BDT score in the 1L,9j,4b signal region after the fit.

• #### Table 25: 1L,9j,$\geq$5b SR BDT score prefit

Data from Figure 06(b) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 1L,9j,$\geq$5b signal region before the fit.

• #### Table 26: 1L,9j,$\geq$5b SR BDT score postfit

Data from Figure 07(b)

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Comparison between data and prediction for the distribution of the BDT score in the 1L,9j,$\geq$5b signal region after the fit.

• #### Table 27: 1L,$\geq$10j,3bL SR BDT score prefit

Data from Figure 06(c) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 1L,$\geq$10j,3bL signal region before the fit.

• #### Table 28: 1L,$\geq$10j,3bL SR BDT score postfit

Data from Figure 07(c)

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Comparison between data and prediction for the distribution of the BDT score in the 1L,$\geq$10j,3bL signal region after the fit.

• #### Table 29: 1L,$\geq$10j,3bH SR BDT score prefit

Data from Figure 06(d) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 1L,$\geq$10j,3bH signal region before the fit.

• #### Table 30: 1L,$\geq$10j,3bH SR BDT score postfit

Data from Figure 07(d)

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Comparison between data and prediction for the distribution of the BDT score in the 1L,$\geq$10j,3bH signal region after the fit.

• #### Table 31: 1L,$\geq$10j,4b SR BDT score prefit

Data from Figure 06(e) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 1L,$\geq$10j,4b signal region before the fit.

• #### Table 32: 1L,$\geq$10j,4b SR BDT score postfit

Data from Figure 07(e)

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Comparison between data and prediction for the distribution of the BDT score in the 1L,$\geq$10j,4b signal region after the fit.

• #### Table 33: 1L,$\geq$10j,$\geq$5b SR BDT score prefit

Data from Figure 06(f) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 1L,$\geq$10j,$\geq$5b signal region before the fit.

• #### Table 34: 1L,$\geq$10j,$\geq$5b SR BDT score postfit

Data from Figure 07(f)

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Comparison between data and prediction for the distribution of the BDT score in the 1L,$\geq$10j,$\geq$5b signal region after the fit.

• #### Table 35: 2LOS,7j,$\geq$4b SR BDT score prefit

Data from Figure 07(a) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 2LOS,7j,$\geq$4b signal region before the fit.

• #### Table 36: 2LOS,7j,$\geq$4b SR BDT score postfit

Data from Figure 08(a)

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Comparison between data and prediction for the distribution of the BDT score in the 2LOS,7j,$\geq$4b signal region after the fit.

• #### Table 37: 2LOS,$\geq$8j,3bL SR BDT score prefit

Data from Figure 07(b) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 2LOS,$\geq$8j,3bL signal region before the fit.

• #### Table 38: 2LOS,$\geq$8j,3bL SR BDT score postfit

Data from Figure 08(b)

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Comparison between data and prediction for the distribution of the BDT score in the 2LOS,$\geq$8j,3bL signal region after the fit.

• #### Table 39: 2LOS,$\geq$8j,3bH SR BDT score prefit

Data from Figure 07(c) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 2LOS,$\geq$8j,3bH signal region before the fit.

• #### Table 40: 2LOS,$\geq$8j,3bH SR BDT score postfit

Data from Figure 08(c)

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Comparison between data and prediction for the distribution of the BDT score in the 2LOS,$\geq$8j,3bH signal region after the fit.

• #### Table 41: 2LOS,$\geq$8j,$\geq$4b SR BDT score prefit

Data from Figure 07(d) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 2LOS,$\geq$8j,$\geq$4b signal region before the fit.

• #### Table 42: 2LOS,$\geq$8j,$\geq$4b SR BDT score postfit

Data from Figure 08(d)

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Comparison between data and prediction for the distribution of the BDT score in the 2LOS,$\geq$8j,$\geq$4b signal region after the fit.

• #### Table 43: 1L,8j,3bV VR $H_{T}^{all}$ prefit

Data from Figure 09(a) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 44: 1L,8j,3bV VR $H_{T}^{all}$ postfit

Data from Figure 09(b) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 45: 1L,9j,3bV VR BDT score prefit

Data from Figure 08(a) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 1L,9j,3bV validation region before the fit.

• #### Table 46: 1L,9j,3bV VR BDT score postfit

Data from Figure 09(a)

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Comparison between data and prediction for the distribution of the BDT score in the 1L,9j,3bV validation region after the fit.

• #### Table 47: 1L,$\geq$10j,3bV VR BDT score prefit

Data from Figure 08(b) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 1L,$\geq$10j,3bV validation region before the fit.

• #### Table 48: 1L,$\geq$10j,3bV VR BDT score postfit

Data from Figure 09(b)

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Comparison between data and prediction for the distribution of the BDT score in the 1L,$\geq$10j,3bV validation region after the fit.

• #### Table 49: 2LOS,6j,3bV VR $H_{T}^{all}$ prefit

Data from Figure 09(c) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 50: 2LOS,6j,3bV VR $H_{T}^{all}$ postfit

Data from Figure 09(d) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 51: 2LOS,7j,3bV VR BDT score prefit

Data from Figure 08(c) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 2LOS,7j,3bV validation region before the fit.

• #### Table 52: 2LOS,7j,3bV VR BDT score postfit

Data from Figure 09(c)

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Comparison between data and prediction for the distribution of the BDT score in the 2LOS,7j,3bV validation region after the fit.

• #### Table 53: 2LOS,$\geq$8j,3bV VR BDT score prefit

Data from Figure 08(d) auxiliary

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Comparison between data and prediction for the distribution of the BDT score in the 2LOS,$\geq$8j,3bV validation region before the fit.

• #### Table 54: 2LOS,$\geq$8j,3bV VR BDT score postfit

Data from Figure 09(d)

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Comparison between data and prediction for the distribution of the BDT score in the 2LOS,$\geq$8j,3bV validation region after the fit.

• #### Table 55: 1L,8j,3bL CR $H_{T}^{all}$ prefit

Data from Figure 10(a) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 56: 1L,8j,3bL CR $H_{T}^{all}$ postfit

Data from Figure 10(b) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 57: 1L,8j,3bH CR $H_{T}^{all}$ prefit

Data from Figure 10(c) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 58: 1L,8j,3bH CR $H_{T}^{all}$ postfit

Data from Figure 10(d) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 59: 1L,9j,3bL CR $H_{T}^{all}$ prefit

Data from Figure 11(a) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 60: 1L,9j,3bL CR $H_{T}^{all}$ postfit

Data from Figure 11(b) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 61: 1L,9j,3bH CR $H_{T}^{all}$ prefit

Data from Figure 11(c) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 62: 1L,9j,3bH CR $H_{T}^{all}$ postfit

Data from Figure 11(d) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 63: 1L,8j,4b CR $H_{T}^{all}$ prefit

Data from Figure 12(a) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 64: 1L,8j,4b CR $H_{T}^{all}$ postfit

Data from Figure 12(b) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 65: 1L,8j,$\geq$5b CR $H_{T}^{all}$ prefit

Data from Figure 12(c) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 66: 1L,8j,$\geq$5b CR $H_{T}^{all}$ postfit

Data from Figure 12(d) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 67: 2LOS,6j,3bL CR $H_{T}^{all}$ prefit

Data from Figure 13(a) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 68: 2LOS,6j,3bL CR $H_{T}^{all}$ postfit

Data from Figure 13(b) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 69: 2LOS,6j,3bH CR $H_{T}^{all}$ prefit

Data from Figure 13(c) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 70: 2LOS,6j,3bH CR $H_{T}^{all}$ postfit

Data from Figure 13(d) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 71: 2LOS,7j,3bL CR $H_{T}^{all}$ prefit

Data from Figure 14(a) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 72: 2LOS,7j,3bL CR $H_{T}^{all}$ postfit

Data from Figure 14(b) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 73: 2LOS,7j,3bH CR $H_{T}^{all}$ prefit

Data from Figure 14(c) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 74: 2LOS,7j,3bH CR $H_{T}^{all}$ postfit

Data from Figure 14(d) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 75: 2LOS,6j,$\geq$4b CR $H_{T}^{all}$ prefit

Data from Figure 15(a) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...

• #### Table 76: 2LOS,6j,$\geq$4b CR $H_{T}^{all}$ postfit

Data from Figure 15(b) auxiliary

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Comparison between data and prediction for the distribution of the scalar sum of all jet and lepton pT in the...