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Search for photonic signatures of gauge-mediated supersymmetry in 8 TeV pp collisions with the ATLAS detector

The collaboration
Phys.Rev. D92 (2015) 072001, 2015

Abstract (data abstract)
CERN-LHC. A search is presented for photonic signatures motivated by generalised models of gauge-mediated supersymmetry breaking. This search makes use of $20.3{\rm fb}^{-1}$ of proton-proton collision data at $\sqrt{s}=8$ TeV recorded by the ATLAS detector at the LHC, and explores models dominated by both strong and electroweak production of supersymmetric partner states. Four experimental signatures incorporating an isolated photon and significant missing transverse momentum are explored. These signatures include events with an additional photon, lepton, $b$-quark jet, or jet activity not associated with any specific underlying quark flavor. No significant excess of events is observed above the Standard Model prediction and model-dependent 95% confidence-level exclusion limits are set.

• Table 1

Data from Figure 8

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Observed and expected exclusion limits in the gluino-bino mass plane, using the $\rm{SR}^{\gamma\gamma}_{S-H}$ analysis for $m_{\tilde{\chi}_1^0}\geq 800 {\rm GeV}$ and...

• Table 2

Data from Figure 9

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Observed and expected exclusion limits in the wino-bino mass plane, using the $\rm{SR}^{\gamma\gamma}_{W-H}$ analysis for $m_{\tilde{\chi}_1^0}\geq 350 {\rm GeV}$ and...

• Table 3

Data from Figure 10

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Observed exclusion limits in the gluino-neutralino mass plane, for the higgsino-bino GGM model with $\mu < 0$, using the merged...

• Table 4

Data from Figure 10

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Expected exclusion limits in the gluino-neutralino mass plane, for the higgsino-bino GGM model with $\mu < 0$, using the merged...

• Table 5

Data from Figure 11

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• Table 7

Data from Figure 12

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Contour of exclusion in wino production cross section from the photon+$\ell$ analysis, as a function of the wino mass parameter...

• Table 8

Data from Auxiliary Table 3

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Numbers of selected data events at progressive stages of the selection, for each SR for the diphoton, photon+j and photon+$\ell$...

• Table 9

Data from Auxiliary Table 4

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Expected number of signal events at progressive stages of the selection, shown for points in the parameter space that typify...

• Table 10

Data from Auxiliary Table 5

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Expected number of signal events at progressive stages of the $\rm{SR}^{\gamma b}_{H}$ selection, shown for data and signal Monte Carlo...

• Table 11

Data from Auxiliary Table 6

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Expected number of signal events at progressive stages of the $\rm{SR}^{\gamma b}_{L}$ selection, shown for data and signal Monte Carlo...

• Table 12

Data from Auxiliary Table 7

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$\rm{SR}^{\gamma\gamma}_{S-H}$ and $\rm{SR}^{\gamma\gamma}_{S-L}$ signal acceptance*efficiency across the strong-production parameter space, for $m_{\tilde{g}}$ between 1550 and 1600 GeV.

• Table 13

Data from Auxiliary Table 8

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$\rm{SR}^{\gamma\gamma}_{S-H}$ and $\rm{SR}^{\gamma\gamma}_{S-L}$ signal acceptance*efficiency across the strong-production parameter space, for $m_{\tilde{g}} = 1500$ GeV.

• Table 14

Data from Auxiliary Table 9

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$\rm{SR}^{\gamma\gamma}_{S-H}$ and $\rm{SR}^{\gamma\gamma}_{S-L}$ signal acceptance*efficiency across the strong-production parameter space, for $m_{\tilde{g}}$ between 1350 and 1450 GeV.

• Table 15

Data from Auxiliary Table 10

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$\rm{SR}^{\gamma\gamma}_{S-H}$ and $\rm{SR}^{\gamma\gamma}_{S-L}$ signal acceptance*efficiency across the strong-production parameter space, for $m_{\tilde{g}}$ between 1250 and 1300 GeV.

• Table 16

Data from Auxiliary Table 11

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$\rm{SR}^{\gamma\gamma}_{S-H}$ and $\rm{SR}^{\gamma\gamma}_{S-L}$ signal acceptance*efficiency across the strong-production parameter space, for $m_{\tilde{g}}$ between 1150 and 1200 GeV.

• Table 17

Data from Auxiliary Table 12

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$\rm{SR}^{\gamma\gamma}_{S-H}$ and $\rm{SR}^{\gamma\gamma}_{S-L}$ signal acceptance*efficiency across the strong-production parameter space, for $m_{\tilde{g}}$ between 1000 and 1100 GeV.

• Table 18

Data from Auxiliary Table 13

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$\rm{SR}^{\gamma\gamma}_{W-H}$ and $\rm{SR}^{\gamma\gamma}_{W-L}$ signal acceptance*efficiency for $m_{\tilde{W}}$ between 650 and 800 GeV.

• Table 19

Data from Auxiliary Table 14

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$\rm{SR}^{\gamma\gamma}_{W-H}$ and $\rm{SR}^{\gamma\gamma}_{W-L}$ signal acceptance*efficiency for $m_{\tilde{W}}$ between 400 and 600 GeV.

• Table 20

Data from Auxiliary Table 15

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$\rm{SR}^{\gamma\gamma}_{W-H}$ and $\rm{SR}^{\gamma\gamma}_{W-L}$ signal acceptance*efficiency for $m_{\tilde{W}}$ between 100 and 400 GeV.

• Table 21

Data from Auxiliary Table 16

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$\rm{SR}^{\gamma b}_{H}$ signal acceptance*efficiency for combined strong and weak production across the $\mu<0$ higgsino-bino parameter space.

• Table 22

Data from Auxiliary Table 17

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$\rm{SR}^{\gamma b}_{L}$ signal acceptance*efficiency for combined strong and weak production across the $\mu<0$ higgsino-bino parameter space.

• Table 23

Data from Auxiliary Table 18

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$\rm{SR}^{\gamma j}_{H}$ signal acceptance*efficiency for combined strong and weak production across the $\mu>0$ higgsino-bino parameter space.

• Table 24

Data from Auxiliary Table 18

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$\rm{SR}^{\gamma j}_{L}$ signal acceptance*efficiency for combined strong and weak production across the $\mu>0$ higgsino-bino parameter space.

• Table 25

Data from Auxiliary Table 20

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Acceptance-times-efficiency (a*e) for the photon+$\ell$ analysis SRs.

• Table 26

Data from Auxiliary Table 21

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The total NLO+NLL strong production cross sections with uncertainties for GGM gluino-neutralino signal points for the diphoton and photon+b analyses....

• Table 27

Data from Auxiliary Table 22

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The total NLO cross sections with uncertainties for GGM wino-bino signal points, for all final states, for the diphoton analysis....

• Table 28

Data from Auxiliary Table 23

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The NLO gaugino pair production cross sections with relative uncertainties for GGM gluino-neutralino signal points for the photon+b analysis.

• Table 29

Data from Auxiliary Table 24

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The best signal region used for each signal point in the photon+b analysis.

• Table 30

Data from Auxiliary Table 25

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The total NLO+NLL cross sections with uncertainties for the strong production GGM signal grid for the photon+j analysis.

• Table 31

Data from Auxiliary Table 26

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The total NLO cross sections with uncertainties for the electroweak production GGM signal grid for the photon+j analysis.

• Table 32

Data from Auxiliary Figure 18

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The best signal region used for each signal point in the photon+j analysis.