Combined search for supersymmetry with photons in proton-proton collisions at $\sqrt{s}=$ 13 TeV

The CMS collaboration
Phys.Lett.B 801 (2020) 135183, 2020.

Abstract
A combination of four searches for new physics involving signatures with at least one photon and large missing transverse momentum, motivated by generalized models of gauge-mediated supersymmetry (SUSY) breaking, is presented. All searches make use of proton-proton collision data at $\sqrt{s}=$ 13 TeV, which were recorded with the CMS detector at the LHC in 2016, and correspond to an integrated luminosity of 35.9 fb$^{-1}$. Signatures with at least one photon and large missing transverse momentum are categorized into events with two isolated photons, events with a lepton and a photon, events with additional jets, and events with at least one high-energy photon. No excess of events is observed beyond expectations from standard model processes, and limits are set in the context of gauge-mediated SUSY. Compared to the individual searches, the combination extends the sensitivity to gauge-mediated SUSY in both electroweak and strong production scenarios by up to 100 GeV in neutralino and chargino masses, and yields the first CMS result combining various SUSY searches in events with photons at $\sqrt{s}=$ 13 TeV.

  • Neutralino BF in GGM (Figure 2a)

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    Neutralino Branching Fraction in GGM scenario

  • Neutralino Mass in GGM (Figure 2b)

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    Neutralino Mass in GGM scenario

  • Yields for all bins (Figure 3)

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    Data from Figure 3 of the paper

  • Expected parameter limit contour GGM (Figure 4b)

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    Expected limit contour for GGM scenario

  • Observed parameter limit contour GGM (Figure 4b)

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    Observed limit contour for GGM scenario

  • Expected limit contour GGM (Figure 4c)

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    Expected limit contour for GGM scenario

  • Observed limit contour GGM (Figure 4c)

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    Observed limit contour for GGM scenario

  • Expected limit contour Neutralino BF (Figure 5a)

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    Expected limit contour for Neutralino BF scenario

  • Observed limit contour Neutralino BF (Figure 5a)

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    Observed limit contour for Neutralino BF scenario

  • Expected limit contour Chargino BF (Figure 5b)

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    Expected limit contour for Chargino BF scenario

  • Observed limit contour Chargino BF (Figure 5b)

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    Observed limit contour for Chargino BF scenario

  • Expected limit contour T5Wg (Figure 6a)

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    Expected limit contour for T5Wg

  • Observed limit contour T5Wg (Figure 6a)

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    Observed limit contour for T5Wg

  • Expected limit contour Gluino BF (Figure 6b)

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    Expected limit contour for Gluino BF scenario

  • Observed limit contour Gluino BF (Figure 6b)

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    Observed limit contour for Gluino BF scenario

  • Covariance matrix (additional material)

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    Covariance matrix for all bins (additional material)

  • Correlation matrix (additional material)

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    Correlation matrix for all bins (additional material)

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