Search for photonic signatures of gauge-mediated supersymmetry in 13 TeV $pp$ collisions with the ATLAS detector

The ATLAS collaboration
No Journal Information, 2018

Abstract (data abstract)
A search is presented for photonic signatures, motivated by generalized models of gauge-mediated supersymmetry breaking. This search makes use of proton-proton collision data at $\sqrt{s}$ = 13 TeV corresponding to an integrated luminosity of 36.1 fb$^{−1}$ recorded by the ATLAS detector at the LHC, and explores models dominated by both strong and electroweak production of supersymmetric partner states. Experimental signatures incorporating an isolated photon and significant missing transverse momentum are explored. These signatures include events with an additional photon or additional jet activity not associated with any specific underlying quark flavor. No significant excess of events is observed above the Standard Model prediction, and 95% confidence-level upper limits of between 0.083 fb and 0.32 fb are set on the visible cross section of contributions from physics beyond the Standard Model. These results are interpreted in terms of lower limits on the masses of gluinos, squarks, and gauginos in the context of generalized models of gauge-mediated supersymmetry, which reach as high as 2.3 TeV for strongly produced and 1.3 TeV for weakly produced supersymmetric partner pairs.

  • Distribution 1

    Data from Figure 3a

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    Distribution of the total visible transverse energy $H_{\mathrm{T}}$ for selected diphoton events, after requiring $\Delta\phi_{\mathrm{min}} (\mathrm{jet}, E_{\mathrm{T}}^{\mathrm{miss}}) > 0.5$ but...

  • Distribution 2

    Data from Figure 3b

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    Distribution of $R_{\mathrm{T}}^{4}$ for the sample satisfying all $\mathrm{SR}^{\gamma j}_{L}$ selection criteria except the $R_{\mathrm{T}}^{4}$ requirement itself, but with a...

  • Distribution 3

    Data from Figure 4

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    Comparisons between expected and observed content of the validation and signal regions for the diphoton analysis. The uncertainties in the...

  • Distribution 4

    Data from Figure 5a

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    Distribution of the missing transverse momentum $E_{\mathrm{T}}^{\mathrm{miss}}$ for the sample satisfying all requirements of the $\mathrm{SR}^{\gamma\gamma}_{W-L}$ selection except the $E_{\mathrm{T}}^{\mathrm{miss}}$...

  • Distribution 5

    Data from Figure 5b

    10.17182/hepdata.81626.v1/t5

    Distribution of the missing transverse momentum $E_{\mathrm{T}}^{\mathrm{miss}}$ for the sample satisfying all requirements of the $\mathrm{SR}^{\gamma\gamma}_{W-H}$ selection except the $E_{\mathrm{T}}^{\mathrm{miss}}$...

  • Distribution 6

    Data from Figure 6

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    Comparisons between expected and observed content of the validation and signal regions for the photon+jets analysis. The uncertainties in the...

  • Distribution 7

    Data from Figure 7a

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    Distribution of the missing transverse momentum $E_{\mathrm{T}}^{\mathrm{miss}}$ for the sample satisfying all requirements of the $\mathrm{SR}^{\gamma j}_{H}$ selection except the...

  • Distribution 8

    Data from Figure 7b

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    Distribution of the missing transverse momentum $E_{\mathrm{T}}^{\mathrm{miss}}$ for the sample satisfying all requirements of the $\mathrm{SR}^{\gamma j}_{L}$ or $\mathrm{SR}^{\gamma j}_{L200}$...

  • Exclusion contour (expected) 1

    Data from Figure 8 (expected limit)

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    Expected exclusion limits in the gluino-bino mass plane, using the $\mathrm{SR}^{\gamma\gamma}_{S-H}$ analysis for $m_{\tilde{\chi}^{0}_{1}} > 1600$ GeV and the $\mathrm{SR}^{\gamma\gamma}_{S-L}$...

  • Exclusion contour (observed) 2

    Data from Figure 8 (observed limit)

    10.17182/hepdata.81626.v1/t10

    Observed exclusion limits in the gluino--bino mass plane, using the $\mathrm{SR}^{\gamma\gamma}_{S-H}$ analysis for $m_{\tilde{\chi}^{0}_{1}} > 1600$ GeV and the $\mathrm{SR}^{\gamma\gamma}_{S-L}$...

  • Exclusion contour (expected) 3

    Data from Figure 9 (expected limit)

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    Expected exclusion limit in the squark-bino mass plane, using the $\mathrm{SR}^{\gamma\gamma}_{S-H}$ analysis for $m_{\tilde{\chi}^{0}_{1}} > 900$ GeV and the $\mathrm{SR}^{\gamma\gamma}_{S-L}$...

  • Exclusion contour (observed) 4

    Data from Figure 9 (observed limit)

    10.17182/hepdata.81626.v1/t12

    Observed exclusion limit in the squark--bino mass plane, using the $\mathrm{SR}^{\gamma\gamma}_{S-H}$ analysis for $m_{\tilde{\chi}^{0}_{1}} > 900$ GeV and the $\mathrm{SR}^{\gamma\gamma}_{S-L}$...

  • Exclusion contour (expected) 5

    Data from Figure 10 (expected limit)

    10.17182/hepdata.81626.v1/t13

    Expected exclusion limit in the wino-bino mass plane, using the $\mathrm{SR}^{\gamma\gamma}_{W-H}$ analysis for $m_{\tilde{\chi}^{0}_{1}} > 400$ GeV and the $\mathrm{SR}^{\gamma\gamma}_{W-L}$...

  • Exclusion contour (observed) 6

    Data from Figure 10 (observed limit)

    10.17182/hepdata.81626.v1/t14

    Observed exclusion limit in the wino-bino mass plane, using the $\mathrm{SR}^{\gamma\gamma}_{W-H}$ analysis for $m_{\tilde{\chi}^{0}_{1}} > 400$ GeV and the $\mathrm{SR}^{\gamma\gamma}_{W-L}$...

  • Exclusion contour (expected) 7

    Data from Figure 11 (expected limit)

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    Expected exclusion limits for the $\mu > 0$ higgsino-bino GGM model explored by the photon+jets analysis.

  • Exclusion contour (observed) 8

    Data from Figure 11 (observed limit)

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    Observed exclusion limits for the $\mu > 0$ higgsino-bino GGM model explored by the photon+jets analysis.

  • Distribution 9

    Data from Figure 12

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    Distribution of the transverse momentum $p_{\mathrm{T}} (\ell\gamma\gamma)$ of events in the $\ell\gamma\gamma$ control region (except without a cut on $p_{\mathrm{T}}...

  • Distribution 10

    Data from Figure 13

    10.17182/hepdata.81626.v1/t18

    Distribution of $E_{\mathrm{T}}^{\mathrm{miss}}$ for diphoton events in a validation region defined by a requirement of $H_{\mathrm{T}} > 1750$ GeV. Also...

  • Distribution 11

    Data from Figure 14

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    Distribution of $H_{\mathrm{T}}$ for diphoton events in a validation region defined by requirement of $E_{\mathrm{T}}^{\mathrm{miss}} > 100$ GeV. Also shown...

  • Distribution 12

    Data from Figure 15

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    Distribution of $m_{\mathrm{eff}}$ for events satisfying all requirements $\mathrm{SR}^{\gamma j}_{H}$ save the $m_{\mathrm{eff}}$ requirement itself. Also shown is the expected...

  • Distribution 13

    Data from Figure 16

    10.17182/hepdata.81626.v1/t21

    Distribution of $m_{\mathrm{eff}}$ for events satisfying all requirements $\mathrm{SR}^{\gamma j}_{L}$ save the $m_{\mathrm{eff}}$ requirement itself. Also shown is the expected...

  • Cross section UL 1

    Data from Figure 17

    10.17182/hepdata.81626.v1/t22

    Derived exclusion limits for the gluino-bino GGM model explored by the diphoton analysis. For each point in the gluino-bino parameter...

  • Cross section UL 2

    Data from Figure 18

    10.17182/hepdata.81626.v1/t23

    Derived exclusion limits for the squark-bino GGM model explored by the diphoton analysis. For each point in the squark-bino parameter...

  • Cross section UL 3

    Data from Figure 19

    10.17182/hepdata.81626.v1/t24

    Derived exclusion limits for the wino-bino GGM model explored by the diphoton analysis. For each point in the wino-bino parameter...

  • Cross section UL 4

    Data from Figure 20

    10.17182/hepdata.81626.v1/t25

    Derived exclusion limits for the $\mu > 0$ higgsino-bino GGM model explored by the photon+jets analysis. For each point in...

  • Best SR 1

    Data from Figure 21

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    Derived exclusion limits for the gluino-bino GGM model explored by the diphoton analysis. For each point in the gluino-bino parameter...

  • Best SR 2

    Data from Figure 22

    10.17182/hepdata.81626.v1/t27

    Derived exclusion limits for the squark-bino GGM model explored by the diphoton analysis. For each point in the squark-bino parameter...

  • Best SR 3

    Data from Figure 23

    10.17182/hepdata.81626.v1/t28

    Derived exclusion limits for the wino--bino GGM model explored by the diphoton analysis. For each point in the wino-bino parameter...

  • Best SR 4

    Data from Figure 24

    10.17182/hepdata.81626.v1/t29

    Derived exclusion limits for the $\mu > 0$ higgsino-bino GGM model explored by the photon+jets analysis. For each point in...

  • Acceptance/Efficiency 1

    Data from Figure 25

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    Acceptance and efficiency for $\mathrm{SR}^{\gamma\gamma}_{S-L}$ for the signal models of the gluino-bino GGM grid.

  • Acceptance/Efficiency 2

    Data from Figure 26

    10.17182/hepdata.81626.v1/t31

    Acceptance and efficiency for $\mathrm{SR}^{\gamma\gamma}_{S-H}$ for the signal models of the gluino-bino GGM grid.

  • Acceptance/Efficiency 3

    Data from Figure 27

    10.17182/hepdata.81626.v1/t32

    Acceptance and efficiency for $\mathrm{SR}^{\gamma\gamma}_{S-L}$ for the signal models of the squark-bino GGM grid.

  • Acceptance/Efficiency 4

    Data from Figure 28

    10.17182/hepdata.81626.v1/t33

    Acceptance and efficiency for $\mathrm{SR}^{\gamma\gamma}_{S-H}$ for the signal models of the squark-bino GGM grid.

  • Acceptance/Efficiency 5

    Data from Figure 29

    10.17182/hepdata.81626.v1/t34

    Acceptance and efficiency for $\mathrm{SR}^{\gamma\gamma}_{W-L}$ for the signal models of the wino-bino GGM grid.

  • Acceptance/Efficiency 6

    Data from Figure 30

    10.17182/hepdata.81626.v1/t35

    Acceptance and efficiency for $\mathrm{SR}^{\gamma\gamma}_{W-H}$ for the signal models of the wino-bino GGM grid.

  • Acceptance/Efficiency 7

    Data from Figure 31

    10.17182/hepdata.81626.v1/t36

    Acceptance and efficiency for $\mathrm{SR}^{\gamma j}_{L}$ for the signal models of the photon+jets GGM grid.

  • Acceptance/Efficiency 8

    Data from Figure 32

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    Acceptance and efficiency for $\mathrm{SR}^{\gamma j}_{H}$ for the signal models of the photon+jets GGM grid.

  • Cutflow 1

    Data from Table 9

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    Cutflow for the $\mathrm{SR}^{\gamma\gamma}_{S-L}$ selection for one relevant signal point in the gluino-bino model, where the gluinos have mass of...

  • Cutflow 2

    Data from Table 10

    10.17182/hepdata.81626.v1/t39

    Cutflow for the $\mathrm{SR}^{\gamma\gamma}_{S-H}$ selection for one relevant signal point in the gluino-bino model, where the gluinos have mass of...

  • Cutflow 3

    Data from Table 11

    10.17182/hepdata.81626.v1/t40

    Cutflow for the $\mathrm{SR}^{\gamma\gamma}_{S-L}$ selection for one relevant signal point in the squark-bino model, where the squarks have mass of...

  • Cutflow 4

    Data from Table 12

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    Cutflow for the $\mathrm{SR}^{\gamma\gamma}_{S-H}$ selection for one relevant signal point in the squark-bino model, where the squarks have mass of...

  • Cutflow 5

    Data from Table 13

    10.17182/hepdata.81626.v1/t42

    Cutflow for the $\mathrm{SR}^{\gamma\gamma}_{W-L}$ selection for one relevant signal point in the wino-bino model, where the winos have mass of...

  • Cutflow 6

    Data from Table 14

    10.17182/hepdata.81626.v1/t43

    Cutflow for the $\mathrm{SR}^{\gamma\gamma}_{W-H}$ selection for one relevant signal point in the wino-bino model, where the winos have mass of...

  • Cutflow 7

    Data from Table 15

    10.17182/hepdata.81626.v1/t44

    Cutflow for the $\mathrm{SR}^{\gamma j}_{L}$ selection, for two relevant signal points in the higgsino-bino model, where the gluinos have mass...

  • Cutflow 8

    Data from Table 16

    10.17182/hepdata.81626.v1/t45

    Cutflow for the $\mathrm{SR}^{\gamma j}_{H}$ selection, for two relevant signal points in the higgsino-bino model, where the gluinos have mass...

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