HEPData Search

Table 1

Kinematics 1 Kinematic distributions after the background-only fit showing the data as well as the expected background in the inclusive electroweakino SRℓℓ-mℓℓ [1, 60] (top) and slepton SRℓℓ-mT2100 [100, ∞] (bottom) signal regions. The arrow in the ETmiss/HTlep variables indicates the minimum value of the requirement imposed in the final SR selection. The mℓℓ and mT2 distributions (right) have all the SR requirements applied. Background processes containing fewer than two prompt leptons are categorized as `Fake/nonprompt'. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The uncertainty bands plotted include all statistical and systematic uncertainties. The last bin includes overflow. The dashed lines represent benchmark signal samples corresponding to the Higgsino H̃ and slepton ℓ̃ simplified models. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 2

Kinematics 2 Kinematic distributions after the background-only fit showing the data as well as the expected background in the inclusive electroweakino SRℓℓ-mℓℓ [1, 60] (top) and slepton SRℓℓ-mT2100 [100, ∞] (bottom) signal regions. The arrow in the ETmiss/HTlep variables indicates the minimum value of the requirement imposed in the final SR selection. The mℓℓ and mT2 distributions (right) have all the SR requirements applied. Background processes containing fewer than two prompt leptons are categorized as `Fake/nonprompt'. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The uncertainty bands plotted include all statistical and systematic uncertainties. The last bin includes overflow. The dashed lines represent benchmark signal samples corresponding to the Higgsino H̃ and slepton ℓ̃ simplified models. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 3

Kinematics 3 Kinematic distributions after the background-only fit showing the data as well as the expected background in the inclusive electroweakino SRℓℓ-mℓℓ [1, 60] (top) and slepton SRℓℓ-mT2100 [100, ∞] (bottom) signal regions. The arrow in the ETmiss/HTlep variables indicates the minimum value of the requirement imposed in the final SR selection. The mℓℓ and mT2 distributions (right) have all the SR requirements applied. Background processes containing fewer than two prompt leptons are categorized as `Fake/nonprompt'. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The uncertainty bands plotted include all statistical and systematic uncertainties. The last bin includes overflow. The dashed lines represent benchmark signal samples corresponding to the Higgsino H̃ and slepton ℓ̃ simplified models. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 4

Kinematics 4 Kinematic distributions after the background-only fit showing the data as well as the expected background in the inclusive electroweakino SRℓℓ-mℓℓ [1, 60] (top) and slepton SRℓℓ-mT2100 [100, ∞] (bottom) signal regions. The arrow in the ETmiss/HTlep variables indicates the minimum value of the requirement imposed in the final SR selection. The mℓℓ and mT2 distributions (right) have all the SR requirements applied. Background processes containing fewer than two prompt leptons are categorized as `Fake/nonprompt'. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The uncertainty bands plotted include all statistical and systematic uncertainties. The last bin includes overflow. The dashed lines represent benchmark signal samples corresponding to the Higgsino H̃ and slepton ℓ̃ simplified models. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 5

Exclusion 1 (exp) Expected 95% CL exclusion sensitivity (blue dashed line) with pm1σexp (yellow band) from experimental systematic uncertainties and observed limits (red solid line) with pm1σtheory (dotted red line) from signal cross-section uncertainties for simplified models of direct Higgsino (top) and wino (bottom) production. A fit of signals to the mℓℓ spectrum is used to derive the limit, which is projected into the Δ m(χ̃20, χ̃10) vs. m(χ̃20) plane. For Higgsino production, the chargino χ̃1pm mass is assumed to be halfway between the two lightest neutralino masses, while m(χ̃20) = m(χ̃1pm) is assumed for the wino--bino model. The gray regions denote the lower chargino mass limit from LEP [20]. The blue region in the lower plot indicates the limit from the 2ℓ+3ℓ combination of ATLAS Run 1 [41,42].

Table 6

Exclusion 1 (obs) Expected 95% CL exclusion sensitivity (blue dashed line) with pm1σexp (yellow band) from experimental systematic uncertainties and observed limits (red solid line) with pm1σtheory (dotted red line) from signal cross-section uncertainties for simplified models of direct Higgsino (top) and wino (bottom) production. A fit of signals to the mℓℓ spectrum is used to derive the limit, which is projected into the Δ m(χ̃20, χ̃10) vs. m(χ̃20) plane. For Higgsino production, the chargino χ̃1pm mass is assumed to be halfway between the two lightest neutralino masses, while m(χ̃20) = m(χ̃1pm) is assumed for the wino--bino model. The gray regions denote the lower chargino mass limit from LEP [20]. The blue region in the lower plot indicates the limit from the 2ℓ+3ℓ combination of ATLAS Run 1 [41,42].

Table 7

Exclusion 2 (exp) Expected 95% CL exclusion sensitivity (blue dashed line) with pm1σexp (yellow band) from experimental systematic uncertainties and observed limits (red solid line) with pm1σtheory (dotted red line) from signal cross-section uncertainties for simplified models of direct Higgsino (top) and wino (bottom) production. A fit of signals to the mℓℓ spectrum is used to derive the limit, which is projected into the Δ m(χ̃20, χ̃10) vs. m(χ̃20) plane. For Higgsino production, the chargino χ̃1pm mass is assumed to be halfway between the two lightest neutralino masses, while m(χ̃20) = m(χ̃1pm) is assumed for the wino--bino model. The gray regions denote the lower chargino mass limit from LEP [20]. The blue region in the lower plot indicates the limit from the 2ℓ+3ℓ combination of ATLAS Run 1 [41,42].

Table 8

Exclusion 2 (obs) Expected 95% CL exclusion sensitivity (blue dashed line) with pm1σexp (yellow band) from experimental systematic uncertainties and observed limits (red solid line) with pm1σtheory (dotted red line) from signal cross-section uncertainties for simplified models of direct Higgsino (top) and wino (bottom) production. A fit of signals to the mℓℓ spectrum is used to derive the limit, which is projected into the Δ m(χ̃20, χ̃10) vs. m(χ̃20) plane. For Higgsino production, the chargino χ̃1pm mass is assumed to be halfway between the two lightest neutralino masses, while m(χ̃20) = m(χ̃1pm) is assumed for the wino--bino model. The gray regions denote the lower chargino mass limit from LEP [20]. The blue region in the lower plot indicates the limit from the 2ℓ+3ℓ combination of ATLAS Run 1 [41,42].

Table 9

Exclusion 3 (exp) Expected 95% CL exclusion sensitivity (blue dashed line) with ± 1 σexp (yellow band) from experimental systematic uncertainties and observed limits (red solid line) with ± 1 σtheory (dotted red line) from signal cross-section uncertainties for simplified models of direct slepton production. A fit of slepton signals to the mT2100 spectrum is used to derive the limit, which is projected into the Δ m(ℓ̃, χ̃10) vs. m(ℓ̃) plane. Slepton ℓ̃ refers to the scalar partners of left- and right-handed electrons and muons, which are assumed to be fourfold mass degenerate m(ẽL) = m(ẽR) = m(μ̃L) = m(μ̃R). The gray region is the ẽR limit from LEP [20,24], while the blue region is the fourfold mass degenerate slepton limit from ATLAS Run 1 [41].

Table 10

Exclusion 3 (obs) Expected 95% CL exclusion sensitivity (blue dashed line) with ± 1 σexp (yellow band) from experimental systematic uncertainties and observed limits (red solid line) with ± 1 σtheory (dotted red line) from signal cross-section uncertainties for simplified models of direct slepton production. A fit of slepton signals to the mT2100 spectrum is used to derive the limit, which is projected into the Δ m(ℓ̃, χ̃10) vs. m(ℓ̃) plane. Slepton ℓ̃ refers to the scalar partners of left- and right-handed electrons and muons, which are assumed to be fourfold mass degenerate m(ẽL) = m(ẽR) = m(μ̃L) = m(μ̃R). The gray region is the ẽR limit from LEP [20,24], while the blue region is the fourfold mass degenerate slepton limit from ATLAS Run 1 [41].

Table 11

Upper Limits 1 The first two columns present observed (Nobs) and expected (Nexp) event yields in the inclusive signal regions. The latter are obtained by the background-only fit of the control regions, and the errors include both statistical and systematic uncertainties. The next two columns show the observed 95% CL upper limits on the visible cross-section (&lang;εσ&rang;obs95) and on the number of signal events (Sobs95). The fifth column (Sexp95) shows what the 95% CL upper limit on the number of signal events would be, given an observed number of events equal to the expected number (and +- 1 σ deviations from the expectation) of background events. The last column indicates the discovery p-value (p(s = 0)), which is capped at 0.5.

Table 12

Cutflow 1 Observed event yields and exclusion fit results with the signal strength parameter set to zero for the exclusive electroweakino and slepton signal regions. Background processes containing fewer than two prompt leptons are categorized as `Fake/nonprompt'. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. Uncertainties in the fitted background estimates combine statistical and systematic uncertainties.

Table 13

Acceptances 1 Truth acceptances for the Higgsino χ̃20χ̃1± production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 14

Acceptances 2 Truth acceptances for the Higgsino χ̃20χ̃1± production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 15

Acceptances 3 Truth acceptances for the Higgsino χ̃20χ̃1± production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 16

Acceptances 4 Truth acceptances for the Higgsino χ̃20χ̃1± production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 17

Acceptances 5 Truth acceptances for the Higgsino χ̃20χ̃1± production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 18

Acceptances 6 Truth acceptances for the Higgsino χ̃20χ̃1± production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 19

Acceptances 7 Truth acceptances for the Higgsino χ̃20χ̃1± production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 20

Acceptances 8 Truth acceptances for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 21

Acceptances 9 Truth acceptances for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 22

Acceptances 10 Truth acceptances for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 23

Acceptances 11 Truth acceptances for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 24

Acceptances 12 Truth acceptances for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 25

Acceptances 13 Truth acceptances for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 26

Acceptances 14 Truth acceptances for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 27

Acceptances 15 Truth acceptances for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 28

Acceptances 16 Truth acceptances for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 29

Acceptances 17 Truth acceptances for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 30

Acceptances 18 Truth acceptances for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 31

Acceptances 19 Truth acceptances for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 32

Acceptances 20 Truth acceptances for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 33

Acceptances 21 Truth acceptances for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 34

Acceptances 22 Truth acceptances for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 35

Acceptances 23 Truth acceptances for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 36

Acceptances 24 Truth acceptances for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 37

Acceptances 25 Truth acceptances for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 38

Acceptances 26 Truth acceptances for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 39

Acceptances 27 Truth acceptances for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 40

Acceptances 28 Truth acceptances for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Numbers overlaid on the mass planes are the acceptance × 104.

Table 41

Acceptances 29 Truth acceptances for the ℓ̃ℓ̃ production in the inclusive SRℓℓ-mT2100 regions. Numbers overlaid on the mass planes are the acceptance × 103.

Table 42

Acceptances 30 Truth acceptances for the ℓ̃ℓ̃ production in the inclusive SRℓℓ-mT2100 regions. Numbers overlaid on the mass planes are the acceptance × 103.

Table 43

Acceptances 31 Truth acceptances for the ℓ̃ℓ̃ production in the inclusive SRℓℓ-mT2100 regions. Numbers overlaid on the mass planes are the acceptance × 103.

Table 44

Acceptances 32 Truth acceptances for the ℓ̃ℓ̃ production in the inclusive SRℓℓ-mT2100 regions. Numbers overlaid on the mass planes are the acceptance × 103.

Table 45

Acceptances 33 Truth acceptances for the ℓ̃ℓ̃ production in the inclusive SRℓℓ-mT2100 regions. Numbers overlaid on the mass planes are the acceptance × 103.

Table 46

Acceptances 34 Truth acceptances for the ℓ̃ℓ̃ production in the inclusive SRℓℓ-mT2100 regions. Numbers overlaid on the mass planes are the acceptance × 103.

Table 47

Efficiencies 1 Efficiencies for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 48

Efficiencies 2 Efficiencies for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 49

Efficiencies 3 Efficiencies for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 50

Efficiencies 4 Efficiencies for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 51

Efficiencies 5 Efficiencies for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 52

Efficiencies 6 Efficiencies for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 53

Efficiencies 7 Efficiencies for the Higgsino χ̃20χ̃1+ production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 54

Efficiencies 8 Efficiencies for the Higgsino χ̃20χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 55

Efficiencies 9 Efficiencies for the Higgsino χ̃20χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 56

Efficiencies 10 Efficiencies for the Higgsino χ̃20χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 57

Efficiencies 11 Efficiencies for the Higgsino χ̃20χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 58

Efficiencies 12 Efficiencies for the Higgsino χ̃20χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 59

Efficiencies 13 Efficiencies for the Higgsino χ̃20χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 60

Efficiencies 14 Efficiencies for the Higgsino χ̃20χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 61

Efficiencies 15 Efficiencies for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 62

Efficiencies 16 Efficiencies for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 63

Efficiencies 17 Efficiencies for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 64

Efficiencies 18 Efficiencies for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 65

Efficiencies 19 Efficiencies for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 66

Efficiencies 20 Efficiencies for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 67

Efficiencies 21 Efficiencies for the Higgsino χ̃20χ̃10 production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 68

Efficiencies 22 Efficiencies for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 69

Efficiencies 23 Efficiencies for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 70

Efficiencies 24 Efficiencies for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 71

Efficiencies 25 Efficiencies for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 72

Efficiencies 26 Efficiencies for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 73

Efficiencies 27 Efficiencies for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 74

Efficiencies 28 Efficiencies for the Higgsino χ̃1+χ̃1- production process in the inclusive SRℓℓ-mℓℓ regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 75

Efficiencies 29 Efficiencies for the ℓ̃ℓ̃ production in the inclusive SRℓℓ-mT2100 regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 76

Efficiencies 30 Efficiencies for the ℓ̃ℓ̃ production in the inclusive SRℓℓ-mT2100 regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 77

Efficiencies 31 Efficiencies for the ℓ̃ℓ̃ production in the inclusive SRℓℓ-mT2100 regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 78

Efficiencies 32 Efficiencies for the ℓ̃ℓ̃ production in the inclusive SRℓℓ-mT2100 regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 79

Efficiencies 33 Efficiencies for the ℓ̃ℓ̃ production in the inclusive SRℓℓ-mT2100 regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 80

Efficiencies 34 Efficiencies for the ℓ̃ℓ̃ production in the inclusive SRℓℓ-mT2100 regions. Efficiencies are computed as the ``acceptance times efficiency" divided by the acceptance. The black line indicates the maximum allowed value of Δ m or mT2 for the inclusive signal region under study.

Table 81

Cross-Sections 1 Cross-sections of the Higgsino signal grid for each production process denoted in the caption.

Table 82

Cross-Sections 2 Cross-sections of the Higgsino signal grid for each production process denoted in the caption.

Table 83

Cross-Sections 3 Cross-sections of the Higgsino signal grid for each production process denoted in the caption.

Table 84

Cross-Sections 4 Cross-sections of the Higgsino signal grid for each production process denoted in the caption.

Table 85

Cross-Sections 5 Cross-sections of the wino--bino signal grid for each production process in the caption.

Table 86

Cross-Sections 6 Cross-sections of the wino--bino signal grid for each production process in the caption.

Table 87

Cross-Sections 7 Total cross-sections of the slepton simplified model signal grid. Slepton refers to a the scalar partners of the left- and right-handed electrons and muons, which are assumed to be mass degenerate m(ẽL) = m(ẽR) = m(μ̃L) = m(μ̃R).

Table 88

Kinematics 5 Distributions after the background-only fit of kinematic variables used to define selections common to all signal regions, i.e. not including requirements specific to the electroweakino or slepton SR definitions. Blue arrows in the upper panel denote the final requirement used to define the common SR, otherwise all selections are applied. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The first (last) bin includes underflow (overflow). Benchmark Higgsino H̃ and slepton ℓ̃ signals are overlaid as dashed lines. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 89

Kinematics 6 Distributions after the background-only fit of kinematic variables used to define selections common to all signal regions, i.e. not including requirements specific to the electroweakino or slepton SR definitions. Blue arrows in the upper panel denote the final requirement used to define the common SR, otherwise all selections are applied. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The first (last) bin includes underflow (overflow). Benchmark Higgsino H̃ and slepton ℓ̃ signals are overlaid as dashed lines. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 90

Kinematics 7 Distributions after the background-only fit of kinematic variables used to define selections common to all signal regions, i.e. not including requirements specific to the electroweakino or slepton SR definitions. Blue arrows in the upper panel denote the final requirement used to define the common SR, otherwise all selections are applied. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The first (last) bin includes underflow (overflow). Benchmark Higgsino H̃ and slepton ℓ̃ signals are overlaid as dashed lines. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 91

Kinematics 8 Distributions after the background-only fit of kinematic variables used to define selections common to all signal regions, i.e. not including requirements specific to the electroweakino or slepton SR definitions. Blue arrows in the upper panel denote the final requirement used to define the common SR, otherwise all selections are applied. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The first (last) bin includes underflow (overflow). Benchmark Higgsino H̃ and slepton ℓ̃ signals are overlaid as dashed lines. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 92

Kinematics 9 Distributions after the background-only fit of kinematic variables used to define selections common to all signal regions, i.e. not including requirements specific to the electroweakino or slepton SR definitions. Blue arrows in the upper panel denote the final requirement used to define the common SR, otherwise all selections are applied. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The first (last) bin includes underflow (overflow). Benchmark Higgsino H̃ and slepton ℓ̃ signals are overlaid as dashed lines. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 93

Kinematics 10 Distributions after the background-only fit of kinematic variables used to define selections common to all signal regions, i.e. not including requirements specific to the electroweakino or slepton SR definitions. Blue arrows in the upper panel denote the final requirement used to define the common SR, otherwise all selections are applied. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The first (last) bin includes underflow (overflow). Benchmark Higgsino H̃ and slepton ℓ̃ signals are overlaid as dashed lines. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 94

Kinematics 11 Distributions after the background-only fit of kinematic variables used to define selections common to all signal regions, i.e. not including requirements specific to the electroweakino or slepton SR definitions. Blue arrows in the upper panel denote the final requirement used to define the common SR, otherwise all selections are applied. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The first (last) bin includes underflow (overflow). Benchmark Higgsino H̃ and slepton ℓ̃ signals are overlaid as dashed lines. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 95

Kinematics 12 Distributions after the background-only fit of kinematic variables used to define selections common to all signal regions, i.e. not including requirements specific to the electroweakino or slepton SR definitions. Blue arrows in the upper panel denote the final requirement used to define the common SR, otherwise all selections are applied. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The first (last) bin includes underflow (overflow). Benchmark Higgsino H̃ and slepton ℓ̃ signals are overlaid as dashed lines. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 96

Kinematics 13 Distributions after the background-only fit of kinematic variables used to define selections common to all signal regions, i.e. not including requirements specific to the electroweakino or slepton SR definitions. Blue arrows in the upper panel denote the final requirement used to define the common SR, otherwise all selections are applied. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The first (last) bin includes underflow (overflow). Benchmark Higgsino H̃ and slepton ℓ̃ signals are overlaid as dashed lines. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 97

Kinematics 14 Distributions after the background-only fit of kinematic variables used to define selections common to all signal regions, i.e. not including requirements specific to the electroweakino or slepton SR definitions. Blue arrows in the upper panel denote the final requirement used to define the common SR, otherwise all selections are applied. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The first (last) bin includes underflow (overflow). Benchmark Higgsino H̃ and slepton ℓ̃ signals are overlaid as dashed lines. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 98

Kinematics 15 Distributions after the background-only fit of kinematic variables used to define selections common to all signal regions, i.e. not including requirements specific to the electroweakino or slepton SR definitions. Blue arrows in the upper panel denote the final requirement used to define the common SR, otherwise all selections are applied. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. The first (last) bin includes underflow (overflow). Benchmark Higgsino H̃ and slepton ℓ̃ signals are overlaid as dashed lines. Orange arrows in the Data/SM panel indicate values that are beyond the y-axis range.

Table 99

Upper Limits 2 Numbers show 95% CL model-dependent upper limits on the inclusive Higgsino signal cross-sections.

Table 100

Upper Limits 3 Numbers show 95% CL model-dependent upper limits on the inclusive Higgsino signal cross-sections.

Table 101

Upper Limits 4 Numbers show 95% CL model-dependent upper limits on the inclusive signal cross-sections of the wino--bino model.

Table 102

Upper Limits 5 Numbers show 95% CL model-dependent upper limits on the inclusive signal cross-sections of the wino--bino model.

Table 103

Upper Limits 6 Numbers show the 95% CL model-dependent upper limits on the slepton signal cross-sections, assuming a fourfold mass degeneracy m(ẽL,R) = m(μ̃L,R).

Table 104

Upper Limits 7 Numbers show the 95% CL model-dependent upper limits on the slepton signal cross-sections, assuming a fourfold mass degeneracy m(ẽL,R) = m(μ̃L,R).

Table 105

Upper Limits 8 Expected and observed 95% CL cross-section upper limits as a function of the universal gaugino mass m1/2 for the NUHM2 model. The gray numbers indicate the values of the observed limit. The green and yellow bands around the expected limit indicate the ± 1σ and ± 2σ uncertainties, respectively. The expected signal production cross-sections as well as the associated uncertainty are indicated with the blue solid and dashed lines. The lower x-axis indicates the difference between the χ̃20 and χ̃10 masses for different values of m1/2. A fit of signals to the mℓℓ spectrum is used to derive this limit.

Table 106

Upper Limits 9 Expected and observed 95% CL cross-section upper limits as a function of the universal gaugino mass m1/2 for the NUHM2 model. The gray numbers indicate the values of the observed limit. The green and yellow bands around the expected limit indicate the ± 1σ and ± 2σ uncertainties, respectively. The expected signal production cross-sections as well as the associated uncertainty are indicated with the blue solid and dashed lines. The lower x-axis indicates the difference between the χ̃20 and χ̃10 masses for different values of m1/2. A fit of signals to the mℓℓ spectrum is used to derive this limit.

Table 107

Upper Limits 10 Expected and observed 95% CL cross-section upper limits as a function of the universal gaugino mass m1/2 for the NUHM2 model. The gray numbers indicate the values of the observed limit. The green and yellow bands around the expected limit indicate the ± 1σ and ± 2σ uncertainties, respectively. The expected signal production cross-sections as well as the associated uncertainty are indicated with the blue solid and dashed lines. The lower x-axis indicates the difference between the χ̃20 and χ̃10 masses for different values of m1/2. A fit of signals to the mℓℓ spectrum is used to derive this limit.

Table 108

Cutflow 2 Observed event yields and exclusion fit results with the signal strength parameter set to zero for the exclusive electroweakino and slepton signal regions. Background processes containing fewer than two prompt leptons are categorized as `Fake/nonprompt'. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. Uncertainties in the fitted background estimates combine statistical and systematic uncertainties.

Table 109

Cutflow 3 Observed event yields and background-only fit results for the inclusive electroweakino and slepton signal regions. Background processes containing fewer than two prompt leptons are categorized as `Fake/nonprompt'. The category `Others' contains rare backgrounds from triboson, Higgs boson, and the remaining top-quark production processes listed in Table 1. Uncertainties in the fitted background estimates combine statistical and systematic uncertainties.

Table 110

Exclusion 4 Nominal observed and expected CLs values for Higgsino signals.

Table 111

Exclusion 5 Nominal observed and expected CLs values for wino--bino signals.

Table 112

Exclusion 6 Nominal observed and expected CLs values for slepton signals.

Table 113

Upper Limits 11 Upper limits on observed (expected) Higgsino simplified model signal cross section σobs (exp)95 and signal strength σobs (exp)95 / σtheory.

Table 114

Upper Limits 12 Upper limits on observed (expected) wino--bino simplified model signal cross section σobs (exp)95 and signal strength σobs (exp)95 / σtheory.

Table 115

Upper Limits 13 Upper limits on observed (expected) slepton simplified model signal cross section σobs (exp)95 and signal strength σobs (exp)95 / σtheory.

Table 116

Cutflow 4 Event counts for Higgsino H and slepton ℓ signals after sequential selections for the inclusive SRℓℓ-mℓℓ and SRℓℓ-mT2100 regions. Weighted events are normalised to mathcalL = 36.1 fb-1 and the inclusive cross section σ, while raw MC events are also shown. The generator filter with efficiency εfilt applied to the Higgsino signal requires truth ETmiss > 50 GeV and at least 2 leptons with pT > 3 GeV, while only the ETmiss > 50 GeV requirement is applied to the slepton signal. The mathcalB refers to the branching ratio Z(*) → ℓ+ℓ- in the Higgsino processes. ``Lepton truth matching" requires that the selected leptons are consistent with being decay products of the SUSY process. ``Lepton author 16 veto" removes a class of electron candidates reconstructed with algorithms designed to identify photon conversions.

Table 117

Cutflow 5 Event counts for the χ̃20χ̃1+ process of the Higgsino m(χ̃20, χ̃10) = (110, 100) GeV signal and sequentially with each addition requirement for selections common to all signal regions (SRs), followed by those optimised for Higgsinos and sleptons. ``Lepton truth matching" requires that the selected leptons are consistent with being decay products of the SUSY process. ``Lepton author 16 veto" removes a class of electron candidates reconstructed with algorithms designed to identify photon conversions. Weighted events are normalised to 36.1 fb-1 and the raw Monte Carlo events are also displayed.

Table 118

Cutflow 6 Event counts for the χ̃20χ̃1- process of the Higgsino m(χ̃20, χ̃10) = (110, 100) GeV signal and sequentially with each addition requirement for selections common to all signal regions (SRs), followed by those optimised for Higgsinos and sleptons. ``Lepton truth matching" requires that the selected leptons are consistent with being decay products of the SUSY process. ``Lepton author 16 veto" removes a class of electron candidates reconstructed with algorithms designed to identify photon conversions. Weighted events are normalised to 36.1 fb-1 and the raw Monte Carlo events are also displayed.

Table 119

Cutflow 7 Event counts for the χ̃20χ̃10 process of the Higgsino m(χ̃20, χ̃10) = (110, 100) GeV signal and sequentially with each addition requirement followed by those optimised for Higgsinos and sleptons. Weighted events are normalised to 36.1 fb-1 and the raw Monte Carlo events are also displayed.

Table 120

Cutflow 8 Event counts for the χ̃1+χ̃1- process of the Higgsino m(χ̃20, χ̃10) = (110, 100) GeV signal and sequentially with each addition requirement for selections common to all signal regions (SRs). ``Lepton truth matching" requires that the selected leptons are consistent with being decay products of the SUSY process. ``Lepton author 16 veto" removes a class of electron candidates reconstructed with algorithms designed to identify photon conversions. Weighted events are normalised to 36.1 fb-1 and the raw Monte Carlo events are also displayed.

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Search for electroweak production of supersymmetric states in scenarios with compressed mass spectra at $\sqrt{s}=13$ TeV with the ATLAS detector