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Summary of the searches for squarks and gluinos using $\sqrt{s}=8$ TeV pp collisions with the ATLAS experiment at the LHC

The collaboration
JHEP 1510 (2015) 054, 2015

Abstract (data abstract)
CERN-LHC. A summary is presented of ATLAS searches for gluinos and first- and second-generation squarks in final states containing jets and missing transverse momentum, with or without leptons or b-jets, in the $\sqrt{s}$ = 8 TeV data set collected at the Large Hadron Collider in 2012. This paper reports the results of new interpretations and statistical combinations of previously published analyses, as well as a new analysis. Since no significant excess of events over the Standard Model expectation is observed, the data are used to set limits in a variety of models. In all the considered simplified models that assume R-parity conservation, the limit on the gluino mass exceeds 1150 GeV at 95% confidence level, for an LSP mass smaller than 100 GeV. Furthermore, exclusion limits are set for left-handed squarks in a phenomenological MSSM model, a minimal Supergravity/Constrained MSSM model, R-parity-violation scenarios, a minimal gauge-mediated supersymmetry breaking model, a natural gauge mediation model, a non-universal Higgs mass model with gaugino mediation and a minimal model of universal extra dimensions.

• #### Table 1

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Acceptance for the loose channel of the Razor analysis for the direct squark-squark model.

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Acceptance times efficiency for the loose channel of the Razor analysis for the direct squark-squark model.

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Acceptance for the tight channel of the Razor analysis for the direct squark-squark model.

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Acceptance times efficiency for the tight channel of the Razor analysis for the direct squark-squark model.

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Acceptance for the 1tau channel of the Taus+jets+MET analysis for the gluino simplified model.

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Efficiency for the 1tau channel of the Taus+jets+MET analysis for the gluino simplified model.

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Acceptance for the 2tau channel of the Taus+jets+MET analysis for the gluino simplified model.

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Efficiency for the 2tau channel of the Taus+jets+MET analysis for the gluino simplified model.

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Acceptance for the 1tau channel of the Taus+jets+MET analysis for the squark simplified model.

• #### Table 10

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Efficiency for the 1tau channel of the Taus+jets+MET analysis for the squark simplified model.

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Acceptance for the 2tau channel of the Taus+jets+MET analysis for the squark simplified model.

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Efficiency for the 2tau channel of the Taus+jets+MET analysis for the squark simplified model.

• #### Table 13

Data from F 18

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Observed limit on the cross-section times branching ratio in fb at 95% CL for the direct squark-squark model.

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Data from F 29

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Observed limit on the cross-section times branching ratio in fb at 95% CL for the gluino simplified model, obtained by...

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Data from F 28

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Observed limit on the cross-section times branching ratio in fb at 95% CL for the squark simplified model, obtained by...

• #### Table 16

Data from F 11A

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Observed 95% CL cross section times branching ratio upper limit on pMSSM qLqL production with M1=60 GeV and $m_{\tilde g}=$1.6...

• #### Table 17

Data from F 11B

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Observed 95% CL cross section times branching ratio upper limit on pMSSM qLqL production with M2=(M1+mqL)/2 and $m_{\tilde g}=$1.6 TeV...

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Data from F 11C

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Observed 95% CL cross section times branching ratio upper limit on pMSSM qLqL production with M1=60 GeV with $m_{\tilde g}=$2.2...

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Data from F 11D

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Observed 95% CL cross section times branching ratio upper limit on pMSSM qLqL production with M2=(M1+mqL)/2 and $m_{\tilde g}=$2.2 TeV...

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Data from F 11E

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Observed 95% CL cross section times branching ratio upper limit on pMSSM qLqL production with M1=60 GeV and $m_{\tilde g}=$3.0...

• #### Table 21

Data from F 11F

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Observed 95% CL cross section times branching ratio upper limit on pMSSM qLqL production with M2=(M1+mqL)/2 and $m_{\tilde g}=$3.0 TeV...

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Data from F 30

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Observed and expected limits on the cross-section times branching ratio in fb at 95% CL for the gluino-mediated stop model...

• #### Table 23

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: Cut flow for signal regions 0L_4jt+ and 0L_5jt of baseline signal points normalized to 20.3 fb$^\mathrm{-1}$. The point used...

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Cut flow for the 1L(H)_7-jet SR (electron channel) for the main background from the $t\bar{t}$ production. The events are normalized...

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Cut flow for the 1L(H)_7-jet SR (muon channel) for the main background from the $t\bar{t}$ production. The events are normalized...

• #### Table 26

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Cut flow for 1L(H)_7-jet SR (electron channel). The signal point is taken from the gluino simplified model with 1-step decay...

• #### Table 27

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Cut flow for 1L(H)_7-jet SR (muon channel). The signal point is taken from the gluino simplified model with 1-step decay...

• #### Table 28

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Cut flow for 1L(H)_7-jet SR (electron channel). The signal point is taken from the gluino simplified model with 1-step decay...

• #### Table 29

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Cut flow for 1L(H)_7-jet SR (muon channel). The signal point is taken from the gluino simplified model with 1-step decay...

• #### Table 30

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Cut flow for 0LRaz_SR$_{\rm loose}$ and 0LRaz_SR$_{\rm tight}$ signal regions of baseline signal point ($m(\tilde{q}, \tilde{\chi}_1^0)=(850, 100)$ GeV) normalized to...