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Combination of the searches for pair-produced vector-like partners of the third-generation quarks at $\sqrt{s} =$ 13 TeV with the ATLAS detector

The collaboration
No Journal Information, 2018

Abstract (data abstract)
CERN-LHC. A combination of the searches for pair-produced vector-like partners of the top and bottom quarks in various decay channels ($T$$\rightarrow$$Zt/Wb/Ht$, $B$$\rightarrow$$Zb/Wt/Hb$) is performed using 36.1 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}$ = 13 TeV with the ATLAS detector at the Large Hadron Collider. The observed data are found to be in good agreement with the Standard Model background prediction in all individual searches. Therefore, combined 95% confidence level upper limits are set on the production cross-section for a range of vector-like quark scenarios, significantly extending the reach of the individual searches. A singlet $T$ is excluded for masses below 1.31 TeV and a singlet $B$ is excluded for masses below 1.22 TeV. Assuming a weak isospin $(T,B)$ doublet, $T$ and $B$ masses below 1.37 TeV are excluded.

• #### Table 1

Data from Figure 4A and auxiliary material

10.17182/hepdata.83541.v1/t1

Expected and observed 95% lower limits on the vector-like top quark mass as a function of the branching ratio, asumming...

• #### Table 2

Data from Figure 4B and auxiliary material

10.17182/hepdata.83541.v1/t2

Expected and observed 95% lower limits on the vector-like bottom quark mass as a function of the branching ratio, asumming...

• #### Table 3

Data from auxiliary material

10.17182/hepdata.83541.v1/t3

Expected and observed 95% upper limits on the vector-like top quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 4

Data from auxiliary material

10.17182/hepdata.83541.v1/t4

Expected and observed 95% upper limits on the vector-like top quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 5

Data from auxiliary material

10.17182/hepdata.83541.v1/t5

Expected and observed 95% upper limits on the vector-like top quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 6

Data from auxiliary material

10.17182/hepdata.83541.v1/t6

Expected and observed 95% upper limits on the vector-like top quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 7

Data from auxiliary material

10.17182/hepdata.83541.v1/t7

Expected and observed 95% upper limits on the vector-like top quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 8

Data from auxiliary material

10.17182/hepdata.83541.v1/t8

Expected and observed 95% upper limits on the vector-like top quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 9

Data from auxiliary material

10.17182/hepdata.83541.v1/t9

Expected and observed 95% upper limits on the vector-like top quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 10

Data from auxiliary material

10.17182/hepdata.83541.v1/t10

Expected and observed 95% upper limits on the vector-like top quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 11

Data from auxiliary material

10.17182/hepdata.83541.v1/t11

Expected and observed 95% upper limits on the vector-like top quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 12

Data from auxiliary material

10.17182/hepdata.83541.v1/t12

Expected and observed 95% upper limits on the vector-like top quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 13

Data from auxiliary material

10.17182/hepdata.83541.v1/t13

Expected and observed 95% upper limits on the vector-like bottom quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 14

Data from auxiliary material

10.17182/hepdata.83541.v1/t14

Expected and observed 95% upper limits on the vector-like bottom quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 15

Data from auxiliary material

10.17182/hepdata.83541.v1/t15

Expected and observed 95% upper limits on the vector-like bottom quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 16

Data from auxiliary material

10.17182/hepdata.83541.v1/t16

Expected and observed 95% upper limits on the vector-like bottom quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 17

Data from auxiliary material

10.17182/hepdata.83541.v1/t17

Expected and observed 95% upper limits on the vector-like bottom quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 18

Data from auxiliary material

10.17182/hepdata.83541.v1/t18

Expected and observed 95% upper limits on the vector-like bottom quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 19

Data from auxiliary material

10.17182/hepdata.83541.v1/t19

Expected and observed 95% upper limits on the vector-like bottom quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 20

Data from auxiliary material

10.17182/hepdata.83541.v1/t20

Expected and observed 95% upper limits on the vector-like bottom quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 21

Data from auxiliary material

10.17182/hepdata.83541.v1/t21

Expected and observed 95% upper limits on the vector-like bottom quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...

• #### Table 22

Data from auxiliary material

10.17182/hepdata.83541.v1/t22

Expected and observed 95% upper limits on the vector-like bottom quark pair-production signal strength (i.e. the ratio sigma_exclusion/sigma_VLQ) as a...