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| CMS-PAS-SUS-21-009 | ||
| Search for new physics in multijet events with at least one photon and large missing transverse momentum in proton-proton collisions at 13 TeV | ||
| CMS Collaboration | ||
| 18 March 2023 | ||
| Abstract: A search for new physics in final states consisting of at least one photon, jets, and large missing transverse momentum is presented, using proton-proton collision events at a center-of-mass energy of 13 TeV. The data correspond to an integrated luminosity of 137 fb$ ^{-1} $, recorded by the CMS experiment at the CERN LHC from 2016 to 2018. The events with signal-like characteristics are divided into mutually exclusive bins characterized by the missing transverse momentum, the number of jets, the number of b-tagged jets, and jets consistent with the presence of hadronically decaying W, Z, or H bosons. The observed data are found to be consistent with the expectation from standard model processes. The results are interpreted in the context of pair production of supersymmetric particles via strong and electroweak interactions, assuming simplified models. Depending on the details of the signal models, gluinos and squarks of masses up to 2.35 and 1.43 TeV, respectively, and electroweakinos of masses up to 1.3 TeV are excluded at 95% confidence level. | ||
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These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here. |
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| Figures | |
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Figure 1:
Diagrams of simplified models of gluino pair production: T5qqqqHG (top left), T5bbbbZG (top right), T5ttttZG (lower left), and top squark pair production: T6ttZG (lower right). The models are defined in the text. |
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Figure 1-a:
Diagrams of simplified models of gluino pair production: T5qqqqHG (top left), T5bbbbZG (top right), T5ttttZG (lower left), and top squark pair production: T6ttZG (lower right). The models are defined in the text. |
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Figure 1-b:
Diagrams of simplified models of gluino pair production: T5qqqqHG (top left), T5bbbbZG (top right), T5ttttZG (lower left), and top squark pair production: T6ttZG (lower right). The models are defined in the text. |
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Figure 1-c:
Diagrams of simplified models of gluino pair production: T5qqqqHG (top left), T5bbbbZG (top right), T5ttttZG (lower left), and top squark pair production: T6ttZG (lower right). The models are defined in the text. |
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Figure 1-d:
Diagrams of simplified models of gluino pair production: T5qqqqHG (top left), T5bbbbZG (top right), T5ttttZG (lower left), and top squark pair production: T6ttZG (lower right). The models are defined in the text. |
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Figure 2:
Diagrams of simplified models of electroweakino pair production: TChiWG (top), TChiNG (bottom left), and TChiNGnn (bottom right). Only the $ \tilde{\chi}_{1}^{\pm} \tilde{\chi}_{1}^{0} $ and $ \tilde{\chi}_{1}^{\pm} \tilde{\chi}_{1}^{\pm} $ cases are shown for the TChiWG and TChiNG models, respectively. The models are defined in the text. |
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Figure 2-a:
Diagrams of simplified models of electroweakino pair production: TChiWG (top), TChiNG (bottom left), and TChiNGnn (bottom right). Only the $ \tilde{\chi}_{1}^{\pm} \tilde{\chi}_{1}^{0} $ and $ \tilde{\chi}_{1}^{\pm} \tilde{\chi}_{1}^{\pm} $ cases are shown for the TChiWG and TChiNG models, respectively. The models are defined in the text. |
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Figure 2-b:
Diagrams of simplified models of electroweakino pair production: TChiWG (top), TChiNG (bottom left), and TChiNGnn (bottom right). Only the $ \tilde{\chi}_{1}^{\pm} \tilde{\chi}_{1}^{0} $ and $ \tilde{\chi}_{1}^{\pm} \tilde{\chi}_{1}^{\pm} $ cases are shown for the TChiWG and TChiNG models, respectively. The models are defined in the text. |
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Figure 2-c:
Diagrams of simplified models of electroweakino pair production: TChiWG (top), TChiNG (bottom left), and TChiNGnn (bottom right). Only the $ \tilde{\chi}_{1}^{\pm} \tilde{\chi}_{1}^{0} $ and $ \tilde{\chi}_{1}^{\pm} \tilde{\chi}_{1}^{\pm} $ cases are shown for the TChiWG and TChiNG models, respectively. The models are defined in the text. |
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Figure 3:
The definitions and indexing schemes for the SP (left) and EW (right) SRs and CRs, in the planes of $ p_{\mathrm{T}}^\text{miss} $, $ N_{\text{jets}} $, and $ N_{\text{\mathrm{b}-tags}} $ (left) and $ p_{\mathrm{T}}^\text{miss} $, $ \text{V}\text{-tag} $, and $ \mathrm{H}\text{-tag} $ (right). The gray blocks correspond to the low-$ p_{\mathrm{T}}^\text{miss} $ CRs, the blue blocks to the SP SRs, and the red blocks to the EW SRs. |
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Figure 3-a:
The definitions and indexing schemes for the SP (left) and EW (right) SRs and CRs, in the planes of $ p_{\mathrm{T}}^\text{miss} $, $ N_{\text{jets}} $, and $ N_{\text{\mathrm{b}-tags}} $ (left) and $ p_{\mathrm{T}}^\text{miss} $, $ \text{V}\text{-tag} $, and $ \mathrm{H}\text{-tag} $ (right). The gray blocks correspond to the low-$ p_{\mathrm{T}}^\text{miss} $ CRs, the blue blocks to the SP SRs, and the red blocks to the EW SRs. |
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Figure 3-b:
The definitions and indexing schemes for the SP (left) and EW (right) SRs and CRs, in the planes of $ p_{\mathrm{T}}^\text{miss} $, $ N_{\text{jets}} $, and $ N_{\text{\mathrm{b}-tags}} $ (left) and $ p_{\mathrm{T}}^\text{miss} $, $ \text{V}\text{-tag} $, and $ \mathrm{H}\text{-tag} $ (right). The gray blocks correspond to the low-$ p_{\mathrm{T}}^\text{miss} $ CRs, the blue blocks to the SP SRs, and the red blocks to the EW SRs. |
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Figure 4:
Left: the relative contributions of events with light lepton(s) or $ \tau_\mathrm{h} $ in the SRs and CRs (top panel), and the corresponding TFs, along with their statistical uncertainties (bottom panel). Right: a simulation-based comparison between the expected and predicted lost lepton event yields in each of the SR bins. The vertical error bars indicate the statistical uncertainty in the simulation and the hashed bands in the bottom panel indicate the systematic uncertainties. |
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Figure 4-a:
Left: the relative contributions of events with light lepton(s) or $ \tau_\mathrm{h} $ in the SRs and CRs (top panel), and the corresponding TFs, along with their statistical uncertainties (bottom panel). Right: a simulation-based comparison between the expected and predicted lost lepton event yields in each of the SR bins. The vertical error bars indicate the statistical uncertainty in the simulation and the hashed bands in the bottom panel indicate the systematic uncertainties. |
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Figure 4-b:
Left: the relative contributions of events with light lepton(s) or $ \tau_\mathrm{h} $ in the SRs and CRs (top panel), and the corresponding TFs, along with their statistical uncertainties (bottom panel). Right: a simulation-based comparison between the expected and predicted lost lepton event yields in each of the SR bins. The vertical error bars indicate the statistical uncertainty in the simulation and the hashed bands in the bottom panel indicate the systematic uncertainties. |
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Figure 5:
A comparison of the number of events with an electron misidentified as a photon in the SRs and the number estimated using the single electron CRs with simulated samples. The ratio of the expected and predicted event yields in each SR is shown in the bottom panel. The shaded region in the bottom panel indicates the relative systematic uncertainties in the predicted number of background events. |
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Figure 6:
The distributions of the dilepton invariant mass (left) and the magnitude of the dilepton $ {\vec p}_{\mathrm{T}} $ plus the $ {\vec p}_{\mathrm{T}}^{\kern1pt\text{miss}} $ (right) for $ \ell\ell\gamma $ events in data and simulation. In the bottom panel, the shaded region shows the statistical uncertainty in the simulation. |
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Figure 6-a:
The distributions of the dilepton invariant mass (left) and the magnitude of the dilepton $ {\vec p}_{\mathrm{T}} $ plus the $ {\vec p}_{\mathrm{T}}^{\kern1pt\text{miss}} $ (right) for $ \ell\ell\gamma $ events in data and simulation. In the bottom panel, the shaded region shows the statistical uncertainty in the simulation. |
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Figure 6-b:
The distributions of the dilepton invariant mass (left) and the magnitude of the dilepton $ {\vec p}_{\mathrm{T}} $ plus the $ {\vec p}_{\mathrm{T}}^{\kern1pt\text{miss}} $ (right) for $ \ell\ell\gamma $ events in data and simulation. In the bottom panel, the shaded region shows the statistical uncertainty in the simulation. |
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Figure 7:
A comparison between $ \kappa $ estimated from simulation and from data in the zero-photon control region. The values are given for each $ N_{\text{jets}} $, $ N_{\text{\mathrm{b}-tags}} $, $ \text{V}\text{-tag} $, and $ \mathrm{H}\text{-tag} $ bin, represented as $ r $. In the bottom panel, the vertical error bar represents the statistical uncertainty. |
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Figure 8:
The numbers of predicted background events and observed events in the SRs and low-$ p_{\mathrm{T}}^\text{miss} $ CRs. The lost-lepton, electron misidentified as photon, $ \mathrm{Z}\gamma$+jets, and $ \gamma$+jets and QCD multijet backgrounds are stacked histograms. The observed number of events in data are presented as black points. For illustration, the expected event yields are presented for the signal model T5bbbbZG, for small (blue) and large (purple) differences in the masses of the $ \mathrm{\tilde{g}} $ and NLSP. Also shown is the expected distribution of events for the signal model TChiWG (red). The numerical values in parentheses in the legend entries for the signal models indicate the $ \mathrm{\tilde{g}} $ and NLSP mass values for strong production and the NLSP mass value for electroweak production. The bottom panel shows the ratio of the observed number of data events and the predicted backgrounds. The error bars represent the statistical uncertainty in the data events, and the shaded band represents the statistical and systematic uncertainties in the predicted background. The $ p_{\mathrm{T}}^\text{miss} $ bin 200--300 GeV is used for the estimation of the $ \gamma$+jets and QCD multijet background. |
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Figure 9:
The 95% CL upper limits on the production cross sections for $ \mathrm{\tilde{g}} $ pairs, assuming $ \mathrm{\tilde{g}}\to\mathrm{b}\overline{\mathrm{b}}\tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (top left, T5bbbbZG model), $ \mathrm{\tilde{g}}\to\mathrm{q}\overline{\mathrm{q}}\tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{H}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (top right, T5qqqqHG model), $ \mathrm{\tilde{g}}\to{\mathrm{t}\overline{\mathrm{t}}} \tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (bottom left, T5ttttZG model), or top squark pairs assuming the top squark decays to a top quark and a $ \tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (bottom right, T6ttZG model). The thick black curve represents the observed exclusion contour and the thin black curves show the effect of varying the signal cross section within the theoretical uncertainties by $ \pm 1\sigma_{\text{theory}} $. The thick red curve indicates the expected exclusion contour and the thin red curves show the variations from $ \pm 1\sigma_{\text{experiment}} $ uncertainties. |
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Figure 9-a:
The 95% CL upper limits on the production cross sections for $ \mathrm{\tilde{g}} $ pairs, assuming $ \mathrm{\tilde{g}}\to\mathrm{b}\overline{\mathrm{b}}\tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (top left, T5bbbbZG model), $ \mathrm{\tilde{g}}\to\mathrm{q}\overline{\mathrm{q}}\tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{H}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (top right, T5qqqqHG model), $ \mathrm{\tilde{g}}\to{\mathrm{t}\overline{\mathrm{t}}} \tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (bottom left, T5ttttZG model), or top squark pairs assuming the top squark decays to a top quark and a $ \tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (bottom right, T6ttZG model). The thick black curve represents the observed exclusion contour and the thin black curves show the effect of varying the signal cross section within the theoretical uncertainties by $ \pm 1\sigma_{\text{theory}} $. The thick red curve indicates the expected exclusion contour and the thin red curves show the variations from $ \pm 1\sigma_{\text{experiment}} $ uncertainties. |
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Figure 9-b:
The 95% CL upper limits on the production cross sections for $ \mathrm{\tilde{g}} $ pairs, assuming $ \mathrm{\tilde{g}}\to\mathrm{b}\overline{\mathrm{b}}\tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (top left, T5bbbbZG model), $ \mathrm{\tilde{g}}\to\mathrm{q}\overline{\mathrm{q}}\tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{H}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (top right, T5qqqqHG model), $ \mathrm{\tilde{g}}\to{\mathrm{t}\overline{\mathrm{t}}} \tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (bottom left, T5ttttZG model), or top squark pairs assuming the top squark decays to a top quark and a $ \tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (bottom right, T6ttZG model). The thick black curve represents the observed exclusion contour and the thin black curves show the effect of varying the signal cross section within the theoretical uncertainties by $ \pm 1\sigma_{\text{theory}} $. The thick red curve indicates the expected exclusion contour and the thin red curves show the variations from $ \pm 1\sigma_{\text{experiment}} $ uncertainties. |
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Figure 9-c:
The 95% CL upper limits on the production cross sections for $ \mathrm{\tilde{g}} $ pairs, assuming $ \mathrm{\tilde{g}}\to\mathrm{b}\overline{\mathrm{b}}\tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (top left, T5bbbbZG model), $ \mathrm{\tilde{g}}\to\mathrm{q}\overline{\mathrm{q}}\tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{H}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (top right, T5qqqqHG model), $ \mathrm{\tilde{g}}\to{\mathrm{t}\overline{\mathrm{t}}} \tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (bottom left, T5ttttZG model), or top squark pairs assuming the top squark decays to a top quark and a $ \tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (bottom right, T6ttZG model). The thick black curve represents the observed exclusion contour and the thin black curves show the effect of varying the signal cross section within the theoretical uncertainties by $ \pm 1\sigma_{\text{theory}} $. The thick red curve indicates the expected exclusion contour and the thin red curves show the variations from $ \pm 1\sigma_{\text{experiment}} $ uncertainties. |
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Figure 9-d:
The 95% CL upper limits on the production cross sections for $ \mathrm{\tilde{g}} $ pairs, assuming $ \mathrm{\tilde{g}}\to\mathrm{b}\overline{\mathrm{b}}\tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (top left, T5bbbbZG model), $ \mathrm{\tilde{g}}\to\mathrm{q}\overline{\mathrm{q}}\tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{H}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (top right, T5qqqqHG model), $ \mathrm{\tilde{g}}\to{\mathrm{t}\overline{\mathrm{t}}} \tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (bottom left, T5ttttZG model), or top squark pairs assuming the top squark decays to a top quark and a $ \tilde{\chi}_{1}^{0} $ followed by $ \tilde{\chi}_{1}^{0}\to\mathrm{Z}\tilde{\mathrm{G}} $ or $ \tilde{\chi}_{1}^{0}\to\gamma\tilde{\mathrm{G}} $ (bottom right, T6ttZG model). The thick black curve represents the observed exclusion contour and the thin black curves show the effect of varying the signal cross section within the theoretical uncertainties by $ \pm 1\sigma_{\text{theory}} $. The thick red curve indicates the expected exclusion contour and the thin red curves show the variations from $ \pm 1\sigma_{\text{experiment}} $ uncertainties. |
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Figure 10:
The expected and observed limits on the electroweakino mass in the TChiWG (top), TChiNG (bottom left), and TChiNGnn (bottom right) models at 95% confidence level. For the TChiWG model (top), two scenarios are considered: the combined process $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{2}^{0}+\tilde{\chi}_{1}^{\pm}\tilde{\chi}_{1}^{\pm} $, in which $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{1}^{\pm} $ decays to $ \mathrm{W}^{\pm}\mathrm{W}^{\pm} $ (red), and the single process $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{2}^{0} $ (blue). Similarly, for the TChiNG model (bottom left), scenarios with degenerate charginos and neutralinos leading to the combined process $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{1}^{\pm}+\tilde{\chi}_{1}^{0}\tilde{\chi}_{2}^{0}+(\tilde{\chi}_{1}^{0}/\tilde{\chi}_{2}^{0})\tilde{\chi}_{1}^{\pm} $ (red) or the single process $ \tilde{\chi}_{1}^{0}\tilde{\chi}_{2}^{0} $ (blue) are considered. |
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Figure 10-a:
The expected and observed limits on the electroweakino mass in the TChiWG (top), TChiNG (bottom left), and TChiNGnn (bottom right) models at 95% confidence level. For the TChiWG model (top), two scenarios are considered: the combined process $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{2}^{0}+\tilde{\chi}_{1}^{\pm}\tilde{\chi}_{1}^{\pm} $, in which $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{1}^{\pm} $ decays to $ \mathrm{W}^{\pm}\mathrm{W}^{\pm} $ (red), and the single process $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{2}^{0} $ (blue). Similarly, for the TChiNG model (bottom left), scenarios with degenerate charginos and neutralinos leading to the combined process $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{1}^{\pm}+\tilde{\chi}_{1}^{0}\tilde{\chi}_{2}^{0}+(\tilde{\chi}_{1}^{0}/\tilde{\chi}_{2}^{0})\tilde{\chi}_{1}^{\pm} $ (red) or the single process $ \tilde{\chi}_{1}^{0}\tilde{\chi}_{2}^{0} $ (blue) are considered. |
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Figure 10-b:
The expected and observed limits on the electroweakino mass in the TChiWG (top), TChiNG (bottom left), and TChiNGnn (bottom right) models at 95% confidence level. For the TChiWG model (top), two scenarios are considered: the combined process $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{2}^{0}+\tilde{\chi}_{1}^{\pm}\tilde{\chi}_{1}^{\pm} $, in which $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{1}^{\pm} $ decays to $ \mathrm{W}^{\pm}\mathrm{W}^{\pm} $ (red), and the single process $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{2}^{0} $ (blue). Similarly, for the TChiNG model (bottom left), scenarios with degenerate charginos and neutralinos leading to the combined process $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{1}^{\pm}+\tilde{\chi}_{1}^{0}\tilde{\chi}_{2}^{0}+(\tilde{\chi}_{1}^{0}/\tilde{\chi}_{2}^{0})\tilde{\chi}_{1}^{\pm} $ (red) or the single process $ \tilde{\chi}_{1}^{0}\tilde{\chi}_{2}^{0} $ (blue) are considered. |
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Figure 10-c:
The expected and observed limits on the electroweakino mass in the TChiWG (top), TChiNG (bottom left), and TChiNGnn (bottom right) models at 95% confidence level. For the TChiWG model (top), two scenarios are considered: the combined process $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{2}^{0}+\tilde{\chi}_{1}^{\pm}\tilde{\chi}_{1}^{\pm} $, in which $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{1}^{\pm} $ decays to $ \mathrm{W}^{\pm}\mathrm{W}^{\pm} $ (red), and the single process $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{2}^{0} $ (blue). Similarly, for the TChiNG model (bottom left), scenarios with degenerate charginos and neutralinos leading to the combined process $ \tilde{\chi}_{1}^{\pm}\tilde{\chi}_{1}^{\pm}+\tilde{\chi}_{1}^{0}\tilde{\chi}_{2}^{0}+(\tilde{\chi}_{1}^{0}/\tilde{\chi}_{2}^{0})\tilde{\chi}_{1}^{\pm} $ (red) or the single process $ \tilde{\chi}_{1}^{0}\tilde{\chi}_{2}^{0} $ (blue) are considered. |
| Tables | |
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Table 1:
Summary of the baseline selection criteria used to identify events of interest for this search. |
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Table 2:
The systematic uncertainties in the predicted background and signal event yields (in %). A dash (---) indicates that the source of uncertainty is not applicable or negligible. |
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Table A1:
The number of events predicted and observed for the signal regions and the low-$ p_{\mathrm{T}}^\text{miss} $ regions used for the estimation of the $ \gamma$+jets and QCD multijet backgrounds. |
| Summary |
| A search for supersymmetry is presented using events with final states containing at least one photon, large missing transverse momentum, and jets that may or may not arise from b quarks. The observations are consistent with the standard model expectations and 95% confidence level upper limits are set on the production cross sections of supersymmetric particles. In the gauge mediated supersymmetry breaking (GMSB) simplified models, the gluino mass limit reaches up to 2.35 TeV, and the top squark mass limit reaches up to 1.43 TeV. For electroweakino pair production, chargino and neutralino masses up to 1.30 TeV are excluded, assuming wino-like electroweakinos. The higgsino-like electroweakino mass limits reach up to 1.05 TeV. |
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