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Search for supersymmetry in events with four or more leptons in $\sqrt{s}=13$ TeV $pp$ collisions with ATLAS

The collaboration
Phys.Rev.D 98 (2018) 032009, 2018.

Abstract (data abstract)
Results from a search for supersymmetry in events with four or more charged leptons (electrons, muons and taus) are presented. The analysis uses a data sample corresponding to $36.1$ fb$^{-1}$ of proton--proton collisions delivered by the Large Hadron Collider at $\sqrt{s}=13$ TeV and recorded by the ATLAS detector. Four-lepton signal regions with up to two hadronically decaying taus are designed to target a range of supersymmetric scenarios that can be either enriched in or depleted of events involving the production and decay of a $Z$ boson. Data yields are consistent with Standard Model expectations and results are used to set upper limits on the event yields from processes beyond the Standard Model. Exclusion limits are set at the 95% confidence level in simplified models of General Gauge Mediated supersymmetry, where higgsino masses are excluded up to $295$ GeV. In $R$-parity-violating simplified models with decays of the lightest supersymmetric particle to charged leptons, lower limits of $1.46$ TeV, $1.06$ TeV, and $2.25$ TeV are placed on wino, slepton and gluino masses, respectively.

• #### Table 1

Data from Figure 6a

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The $m_{\mathrm{eff}}$ distribution for events passing the signal region requirements except the $m_{\mathrm{eff}}$ requirement in SR0A and SR0B. Distributions for...

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Data from Figure 6b

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The $E_{\mathrm{T}}^{\mathrm{miss}}$ distribution for events passing the signal region requirements except the $E_{\mathrm{T}}^{\mathrm{miss}}$ requirement in SR0C and SR0D. Distributions for...

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Data from Figure 6c

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The $m_{\mathrm{eff}}$ distribution for events passing the signal region requirements except the $m_{\mathrm{eff}}$ requirement in SR1. Distributions for data, the...

• #### Table 4

Data from Figure 6d

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The $m_{\mathrm{eff}}$ distribution for events passing the signal region requirements except the $m_{\mathrm{eff}}$ requirement in SR2. Distributions for data, the...

• #### Table 5

Data from Figure 7a

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Expected 95% CL exclusion limits on wino $W/Z$ NLSP pair production with RPV $\tilde{\chi}_1^0$ decays via $\lambda_{12k} \neq 0$ where...

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Data from Figure 7a

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Observed 95% CL exclusion limits on wino $W/Z$ NLSP pair production with RPV $\tilde{\chi}_1^0$ decays via $\lambda_{12k} \neq 0$ where...

• #### Table 7

Data from Figure 7a

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Expected 95% CL exclusion limits on wino $W/Z$ NLSP pair production with RPV $\tilde{\chi}_1^0$ decays via $\lambda_{i33} \neq 0$ where...

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Data from Figure 7a

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Observed 95% CL exclusion limits on wino $W/Z$ NLSP pair production with RPV $\tilde{\chi}_1^0$ decays via $\lambda_{i33} \neq 0$ where...

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Data from Figure 7b

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Expected 95% CL exclusion limits on wino $W/h$ NLSP pair production with RPV $\tilde{\chi}_1^0$ decays via $\lambda_{12k} \neq 0$ where...

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Data from Figure 7b

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Observed 95% CL exclusion limits on wino $W/h$ NLSP pair production with RPV $\tilde{\chi}_1^0$ decays via $\lambda_{12k} \neq 0$ where...

• #### Table 11

Data from Figure 7b

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Expected 95% CL exclusion limits on wino $W/h$ NLSP pair production with RPV $\tilde{\chi}_1^0$ decays via $\lambda_{i33} \neq 0$ where...

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Data from Figure 7b

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Observed 95% CL exclusion limits on wino $W/h$ NLSP pair production with RPV $\tilde{\chi}_1^0$ decays via $\lambda_{i33} \neq 0$ where...

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Data from Figure 7c

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Data from Figure 7c

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Data from Figure 7d

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Data from Figure 7d

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Data from Figure 7e

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Expected 95% CL exclusion limits on the higgsino GGM models. The limits are set using the statistical combination of disjoint...

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Data from Figure 7e

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Observed 95% CL exclusion limits on the higgsino GGM models. The limits are set using the statistical combination of disjoint...

• #### Table 23

Data from Auxiliary Figure 1a

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Observed exclusion limits on the $\tilde{\chi}_1^{\pm}/\tilde{\chi}_2^0$ masses in the context of the wino $W/Z$ RPV scenario with $\lambda_{12k} \neq 0$...

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Data from Auxiliary Figure 1b

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Observed exclusion limits on the $\tilde{\chi}_1^{\pm}/\tilde{\chi}_2^0$ masses in the context of the wino $W/Z$ RPV scenario with $\lambda_{i33} \neq 0$...

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Data from Auxiliary Figure 2a

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Observed exclusion limits on the $\tilde{\chi}_1^{\pm}/\tilde{\chi}_2^0$ masses in the context of the wino $W/Z$ RPV scenario with $\lambda_{12k} \neq 0$...

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Data from Auxiliary Figure 2b

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Observed exclusion limits on the $\tilde{\chi}_1^{\pm}/\tilde{\chi}_2^0$ masses in the context of the wino $W/Z$ RPV scenario with $\lambda_{i33} \neq 0$...

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Data from Auxiliary Figure 3a

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Observed exclusion limits on the $\tilde{\chi}_1^{\pm}/\tilde{\chi}_2^0$ masses in the context of the wino $W/h$ RPV scenario with $\lambda_{12k} \neq 0$...

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Data from Auxiliary Figure 3b

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Observed exclusion limits on the $\tilde{\chi}_1^{\pm}/\tilde{\chi}_2^0$ masses in the context of the wino $W/h$ RPV scenario with $\lambda_{i33} \neq 0$...

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Data from Auxiliary Figure 4a

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Observed exclusion limits on the $\tilde{\chi}_1^{\pm}/\tilde{\chi}_2^0$ masses in the context of the wino $W/h$ RPV scenario with $\lambda_{12k} \neq 0$...

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Data from Auxiliary Figure 4b

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Observed exclusion limits on the $\tilde{\chi}_1^{\pm}/\tilde{\chi}_2^0$ masses in the context of the wino $W/h$ RPV scenario with $\lambda_{i33} \neq 0$...

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Data from Auxiliary Figure 5a

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Observed exclusion limits on the slepton/sneutrino masses in the context of the slepton/sneutrino RPV scenario with $\lambda_{12k} \neq 0$ couplings....

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Data from Auxiliary Figure 5b

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Observed exclusion limits on the slepton/sneutrino masses in the context of the slepton/sneutrino RPV scenario with $\lambda_{i33} \neq 0$ couplings....

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Data from Auxiliary Figure 6a

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Observed exclusion limits on the slepton/sneutrino masses in the context of the slepton/sneutrino RPV scenario with $\lambda_{12k} \neq 0$ couplings....

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Data from Auxiliary Figure 6b

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Observed exclusion limits on the slepton/sneutrino masses in the context of the slepton/sneutrino RPV scenario with $\lambda_{i33} \neq 0$ couplings....

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Data from Auxiliary Figure 7a

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Observed exclusion limits on the gluino masses in the context of the gluino RPV scenario with $\lambda_{12k} \neq 0$ couplings....

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Data from Auxiliary Figure 7b

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Observed exclusion limits on the gluino masses in the context of the gluino RPV scenario with $\lambda_{i33} \neq 0$ couplings....

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Data from Auxiliary Figure 8a

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Observed exclusion limits on the gluino masses in the context of the gluino RPV scenario with $\lambda_{12k} \neq 0$ couplings....

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Data from Auxiliary Figure 8b

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Observed exclusion limits on the gluino masses in the context of the gluino RPV scenario with $\lambda_{i33} \neq 0$ couplings....

• #### Table 39

Data from Auxiliary Figure 9a

10.17182/hepdata.82585.v1/t39

Observed exclusion limits on the $\tilde{\chi}_1^{\pm}\tilde{\chi}_2^{0}\tilde{\chi}_1^{0}$ masses in the context of the higgsino GGM scenario in SR0C. All limits are...

• #### Table 40

Data from Auxiliary Figure 9b

10.17182/hepdata.82585.v1/t40

Observed exclusion limits on the $\tilde{\chi}_1^{\pm}\tilde{\chi}_2^{0}\tilde{\chi}_1^{0}$ masses in the context of the higgsino GGM scenario in SR0D. All limits are...

• #### Table 41

Data from Auxiliary Figure 10a

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The best expected exclusion power between signal regions at each signal point as is adopted in the limit calculation of...

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Data from Auxiliary Figure 10b

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The best expected exclusion power between signal regions at each signal point as is adopted in the limit calculation of...

• #### Table 43

Data from Auxiliary Figure 11a

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The best expected exclusion power between signal regions at each signal point as is adopted in the limit calculation of...

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Data from Auxiliary Figure 11b

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The best expected exclusion power between signal regions at each signal point as is adopted in the limit calculation of...

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Data from Auxiliary Figure 12a

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The best expected exclusion power between signal regions at each signal point as is adopted in the limit calculation of...

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Data from Auxiliary Figure 12b

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The best expected exclusion power between signal regions at each signal point as is adopted in the limit calculation of...

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Data from Auxiliary Figure 13a

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The best expected exclusion power between signal regions at each signal point as is adopted in the limit calculation of...

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Data from Auxiliary Figure 13b

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The best expected exclusion power between signal regions at each signal point as is adopted in the limit calculation of...

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Data from Auxiliary Figure 14

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The best expected exclusion power between the overlapping SR0C and SR0D at each signal point as is adopted in the...

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Data from Auxiliary Table 7

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the Wino $\tilde{\chi}_1^{+}\tilde{\chi}_1^{-}$ $\lambda_{12k} \neq 0$ model...

• #### Table 51

Data from Auxiliary Table 8

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the Wino $\tilde{\chi}_1^{\pm}\tilde{\chi}_2^{0}$ $W/Z$ $\lambda_{12k} \neq 0$...

• #### Table 52

Data from Auxiliary Table 9

10.17182/hepdata.82585.v1/t52

Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the Wino $\tilde{\chi}_1^{\pm}\tilde{\chi}_2^{0}$ $W/h$ $\lambda_{12k} \neq 0$...

• #### Table 53

Data from Auxiliary Table 10

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the slepton/sneutrino $\lambda_{12k} \neq 0$ model fulfilling...

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Data from Auxiliary Table 11

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the gluino $\lambda_{12k} \neq 0$ model fulfilling...

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Data from Auxiliary Table 12

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the Wino $\tilde{\chi}_1^{+}\tilde{\chi}_1^{-}$ $\lambda_{12k} \neq 0$ model...

• #### Table 56

Data from Auxiliary Table 13

10.17182/hepdata.82585.v1/t56

Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the Wino $\tilde{\chi}_1^{\pm}\tilde{\chi}_2^{0}$ $W/Z$ $\lambda_{12k} \neq 0$...

• #### Table 57

Data from Auxiliary Table 14

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the Wino $\tilde{\chi}_1^{\pm}\tilde{\chi}_2^{0}$ $W/h$ $\lambda_{12k} \neq 0$...

• #### Table 58

Data from Auxiliary Table 15

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the slepton/sneutrino $\lambda_{12k} \neq 0$ model fulfilling...

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Data from Auxiliary Table 16

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the gluino $\lambda_{12k} \neq 0$ model fulfilling...

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Data from Auxiliary Table 17

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Data from Auxiliary Table 19

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the Wino $\tilde{\chi}_1^{+}\tilde{\chi}_1^{-}$ $\lambda_{i33} \neq 0$ model...

• #### Table 63

Data from Auxiliary Table 20

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the Wino $\tilde{\chi}_1^{\pm}\tilde{\chi}_2^{0}$ $W/Z$ $\lambda_{i33} \neq 0$...

• #### Table 64

Data from Auxiliary Table 21

10.17182/hepdata.82585.v1/t64

Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the Wino $\tilde{\chi}_1^{\pm}\tilde{\chi}_2^{0}$ $W/h$ $\lambda_{i33} \neq 0$...

• #### Table 65

Data from Auxiliary Table 22

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the slepton/sneutrino $\lambda_{i33} \neq 0$ model fulfilling...

• #### Table 66

Data from Auxiliary Table 23

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the gluino $\lambda_{i33} \neq 0$ model fulfilling...

• #### Table 67

Data from Auxiliary Table 24

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the Wino $\tilde{\chi}_1^{+}\tilde{\chi}_1^{-}$ $\lambda_{i33} \neq 0$ model...

• #### Table 68

Data from Auxiliary Table 25

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the Wino $\tilde{\chi}_1^{\pm}\tilde{\chi}_2^{0}$ $W/Z$ $\lambda_{i33} \neq 0$...

• #### Table 69

Data from Auxiliary Table 26

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the Wino $\tilde{\chi}_1^{\pm}\tilde{\chi}_2^{0}$ $W/h$ $\lambda_{i33} \neq 0$...

• #### Table 70

Data from Auxiliary Table 27

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the slepton/sneutrino $\lambda_{i33} \neq 0$ model fulfilling...

• #### Table 71

Data from Auxiliary Table 28

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Acceptance ($A$) at particle level and selection efficiency ($\epsilon$) at reconstruction level for the gluino $\lambda_{i33} \neq 0$ model fulfilling...

• #### Table 72

Data from Auxiliary Table 29

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Cutflow event yields in regions SR0A and SR0B for RPV models with the $\lambda_{12k} \neq 0$ coupling. All yields correspond...

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Data from Auxiliary Table 30

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• #### Table 76

Data from Auxiliary Table 33

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Cross sections for the slepton/snuetrino model for different NLSP masses.