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Search for supersymmetry in final states with two same-sign or three leptons and jets using 36 fb$^{-1}$ of $\sqrt{s}=13$ TeV $pp$ collision data with the ATLAS detector

The collaboration
No Journal Information, 2017

Abstract (data abstract)
CERN-LHC. A search for strongly produced supersymmetric particles using signatures involving multiple energetic jets and either two isolated same-sign leptons (electrons or muons), or at least three isolated leptons, is presented. The analysis relies on b-tagged jets and missing transverse momentum, to achieve good sensitivity. A data sample of proton-proton collisions at $\sqrt{s}$ = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015 and 2016, corresponding to a total integrated luminosity of 36.1 fb$^{-1}$, is used for the search. No significant excess over the Standard Model prediction is observed. The results are interpreted in several simplified supersymmetric models featuring R-parity conservation and R-parity violation, extending the exclusion limits from previous searches. In models considering gluino pair production, gluino masses are excluded up to 1.87 TeV at 95% confidence level. When bottom squarks are pair-produced and decay to a chargino and a top quark, models with bottom squark masses below 700 GeV and light neutralinos are excluded at 95% confidence level. In addition, model-independent limits are set on a possible contribution of new phenomena to the signal region yields.

• #### Exclusion contour 1 (obs.)

Tabulated data from the publication's Figure 4a

10.17182/hepdata.77719.v1/t1

Observed 95% CL exclusion contours on the gluino and lightest neutralino masses in a SUSY scenario where gluinos are produced...

• #### Exclusion contour 1 (exp.)

Tabulated data from the publication's Figure 4a

10.17182/hepdata.77719.v1/t2

Expected 95% CL exclusion contours on the gluino and lightest neutralino masses in a SUSY scenario where gluinos are produced...

• #### Exclusion contour 2 (obs.)

Tabulated data from the publication's Figure 4b

10.17182/hepdata.77719.v1/t3

Observed 95% CL exclusion contours on the gluino and lightest neutralino masses in a SUSY scenario where gluinos are produced...

• #### Exclusion contour 2 (exp.)

Tabulated data from the publication's Figure 4b

10.17182/hepdata.77719.v1/t4

Expected 95% CL exclusion contours on the gluino and lightest neutralino masses in a SUSY scenario where gluinos are produced...

• #### Exclusion contour 3 (obs.)

Tabulated data from the publication's Figure 4c

10.17182/hepdata.77719.v1/t5

Observed 95% CL exclusion contours on the gluino and lightest neutralino masses in a SUSY scenario where gluinos are produced...

• #### Exclusion contour 3 (exp.)

Tabulated data from the publication's Figure 4c

10.17182/hepdata.77719.v1/t6

Expected 95% CL exclusion contours on the gluino and lightest neutralino masses in a SUSY scenario where gluinos are produced...

• #### Exclusion contour 4 (obs.)

Tabulated data from the publication's Figure 4d

10.17182/hepdata.77719.v1/t7

Observed 95% CL exclusion contours on the lightest bottom squark and lightest neutralino masses in a SUSY scenario where pairs...

• #### Exclusion contour 4 (exp.)

Tabulated data from the publication's Figure 4d

10.17182/hepdata.77719.v1/t8

Expected 95% CL exclusion contours on the lightest bottom squark and lightest neutralino masses in a SUSY scenario where pairs...

• #### Exclusion contour 5 (obs.)

Tabulated data from the publication's Figure 5a

10.17182/hepdata.77719.v1/t9

Observed 95% CL exclusion contours on the gluino and lightest top squark masses in a SUSY scenario where gluinos are...

• #### Exclusion contour 5 (exp.)

Tabulated data from the publication's Figure 5a

10.17182/hepdata.77719.v1/t10

Expected 95% CL exclusion contours on the gluino and lightest top squark masses in a SUSY scenario where gluinos are...

• #### Exclusion contour 6 (obs.)

Tabulated data from the publication's Figure 5b

10.17182/hepdata.77719.v1/t11

Observed 95% CL exclusion contours on the gluino and lightest top squark masses in a SUSY scenario where gluinos are...

• #### Exclusion contour 6 (exp.)

Tabulated data from the publication's Figure 5b

10.17182/hepdata.77719.v1/t12

Expected 95% CL exclusion contours on the gluino and lightest top squark masses in a SUSY scenario where gluinos are...

• #### Exclusion contour 7 (obs.)

Tabulated data from the publication's Figure 5c

10.17182/hepdata.77719.v1/t13

Observed 95% CL exclusion contours on the gluino and lightest neutralino masses in a SUSY scenario where gluinos are produced...

• #### Exclusion contour 7 (exp.)

Tabulated data from the publication's Figure 5c

10.17182/hepdata.77719.v1/t14

Expected 95% CL exclusion contours on the gluino and lightest neutralino masses in a SUSY scenario where gluinos are produced...

• #### Exclusion contour 8 (obs.)

Tabulated data from the publication's Figure 5d

10.17182/hepdata.77719.v1/t15

Observed 95% CL exclusion contours on the gluino and lightest neutralino masses in a SUSY scenario where gluinos are produced...

• #### Exclusion contour 8 (exp.)

Tabulated data from the publication's Figure 5d

10.17182/hepdata.77719.v1/t16

Expected 95% CL exclusion contours on the gluino and lightest neutralino masses in a SUSY scenario where gluinos are produced...

• #### X-section U.L., acc., eff. 1

Tabulated data from the publication's auxiliary material Figures 9a, 12a and 16-19

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Observed 95% CL upper limits on $pp\to \tilde g\tilde g$ production cross-sections in a SUSY scenario where gluinos are produced...

• #### X-section U.L., acc., eff. 2

Tabulated data from the publication's auxiliary material Figures 9b, 12b and 14

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Observed 95% CL upper limits on $pp\to \tilde g\tilde g$ production cross-sections in a SUSY scenario where gluinos are produced...

• #### X-section U.L., acc., eff. 3

Tabulated data from the publication's auxiliary material Figures 9c, 12c and 15

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Observed 95% CL upper limits on $pp\to \tilde g\tilde g$ production cross-sections in a SUSY scenario where gluinos are produced...

• #### X-section U.L., acc., eff. 4

Tabulated data from the publication's auxiliary material Figures 9d, 12d and 20

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Observed 95% CL upper limits on $pp\to \tilde{b}^{}_1\tilde{b}^{*}_1$ production cross-sections in a SUSY scenario where pairs of bottom-antibottom squarks are...

• #### X-section U.L., acc., eff. 5

Tabulated data from the publication's auxiliary material Figures 13a, 23c and 23d

10.17182/hepdata.77719.v1/t21

Observed 95% CL upper limits on $pp\to \tilde g\tilde g$ production cross-sections in a SUSY scenario where gluinos are produced...

• #### X-section U.L., acc., eff. 6

Tabulated data from the publication's auxiliary material Figures 13b, 23a and 23b

10.17182/hepdata.77719.v1/t22

Observed 95% CL upper limits on $pp\to \tilde g\tilde g$ production cross-sections in a SUSY scenario where gluinos are produced...

• #### X-section U.L., acc., eff. 7

Tabulated data from the publication's auxiliary material Figures 13c and 21

10.17182/hepdata.77719.v1/t23

Observed 95% CL upper limits on $pp\to \tilde g\tilde g$ production cross-sections in a SUSY scenario where gluinos are produced...

• #### X-section U.L., acc., eff. 8

Tabulated data from the publication's auxiliary material Figures 13d and 22

10.17182/hepdata.77719.v1/t24

Observed 95% CL upper limits on $pp\to \tilde g\tilde g$ production cross-sections in a SUSY scenario where gluinos are produced...

• #### X-section U.L., acc., eff. 9

Tabulated data from the publication's Figure 4e and auxiliary material Table 24

10.17182/hepdata.77719.v1/t25

Observed and expected 95% CL upper limits on $pp\to \tilde{t}^{}_\mathrm{1}\tilde{t}^{*}_\mathrm{1}$ production cross-sections in a SUSY scenario where pairs of top-antitop...

• #### X-section U.L., acc., eff. 10

Tabulated data from the publication's Figure 6 and auxiliary material Table 23

10.17182/hepdata.77719.v1/t26

Observed and expected 95% CL upper limits on $pp\to \tilde g\tilde g$ production cross-sections in a SUSY scenario with non-universal...

• #### X-section U.L., acc., eff. 11

Tabulated data from the publication's Figure 5e and auxiliary material Table 27

10.17182/hepdata.77719.v1/t27

Observed and expected 95% CL upper limits on $pp\to \tilde{d}^{}_\mathrm{R}\tilde{d}^{*}_\mathrm{R}$ production cross-sections in a SUSY scenario where gluinos are produced...

• #### X-section U.L., acc., eff. 12

Tabulated data from the publication's Figure 5f and auxiliary material Tables 25-26 and 28

10.17182/hepdata.77719.v1/t28

Observed and expected 95% CL upper limits on $pp\to \tilde{d}^{}_\mathrm{R}\tilde{d}^{*}_\mathrm{R}$ production cross-sections in a SUSY scenario where gluinos are produced...

• #### Cutflow 1

Tabulated data from the publication's auxiliary material Table 6

10.17182/hepdata.77719.v1/t29

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpc2L2bS,...

• #### Cutflow 2

Tabulated data from the publication's auxiliary material Table 7

10.17182/hepdata.77719.v1/t30

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpc2L2bH,...

• #### Cutflow 3

Tabulated data from the publication's auxiliary material Table 8

10.17182/hepdata.77719.v1/t31

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpc2Lsoft1b,...

• #### Cutflow 4

Tabulated data from the publication's auxiliary material Table 9

10.17182/hepdata.77719.v1/t32

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpc2Lsoft2b,...

• #### Cutflow 5

Tabulated data from the publication's auxiliary material Table 10

10.17182/hepdata.77719.v1/t33

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpc2L0bS,...

• #### Cutflow 6

Tabulated data from the publication's auxiliary material Table 11

10.17182/hepdata.77719.v1/t34

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpc2L0bH,...

• #### Cutflow 7

Tabulated data from the publication's auxiliary material Table 12

10.17182/hepdata.77719.v1/t35

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpc3L0bS,...

• #### Cutflow 8

Tabulated data from the publication's auxiliary material Table 13

10.17182/hepdata.77719.v1/t36

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpc3L0bH,...

• #### Cutflow 9

Tabulated data from the publication's auxiliary material Table 14

10.17182/hepdata.77719.v1/t37

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpc2L1bS,...

• #### Cutflow 10

Tabulated data from the publication's auxiliary material Table 15

10.17182/hepdata.77719.v1/t38

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpc2L1bH,...

• #### Cutflow 11

Tabulated data from the publication's auxiliary material Table 16

10.17182/hepdata.77719.v1/t39

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpc3LSS1b,...

• #### Cutflow 12

Tabulated data from the publication's auxiliary material Table 17

10.17182/hepdata.77719.v1/t40

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpv2L1bH,...

• #### Cutflow 13

Tabulated data from the publication's auxiliary material Table 18

10.17182/hepdata.77719.v1/t41

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpv2L0b,...

• #### Cutflow 14

Tabulated data from the publication's auxiliary material Table 19

10.17182/hepdata.77719.v1/t42

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpv2L2bH,...

• #### Cutflow 15

Tabulated data from the publication's auxiliary material Table 20

10.17182/hepdata.77719.v1/t43

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpv2L2bS,...

• #### Cutflow 16

Tabulated data from the publication's auxiliary material Table 21

10.17182/hepdata.77719.v1/t44

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpv2L1bS,...

• #### Cutflow 17

Tabulated data from the publication's auxiliary material Table 22

10.17182/hepdata.77719.v1/t45

Number of signal events expected for 36.1 fb$^{-1}$ at different stages of the event selection for the signal region Rpv2L1bM,...