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Neutralino dark matter confronted by the LHC constraints on Electroweak SUSY signals
High Energy Physics - Phenomenology · Submitted 4 May 2013
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim It is shown that even the preliminary data on the direct searches of these sparticles at the LHC, significantly constrain the parameter space of the MSSM compatible with the observed relic density and provide useful hints about the future search prospects.
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The abstract, sentence by sentence
The supersymmetric particles (sparticles) belonging exclusively to the electroweak sector of the minimal supersymmetric standard model (MSSM) may hold the key to the observed dark matter relic density in the universe even if all strongly interacting sparticles are very heavy. The importance of the light EW sparticles in DM physics and in producing spectacular collider signals is emphasized. It is shown that even the preliminary data on the direct searches of these sparticles at the LHC, significantly constrain the parameter space of the MSSM compatible with the observed relic density and provide useful hints about the future search prospects. If in addition to the electroweak sparticles the gluinos are also within the reach of the LHC experiments, then the gluino mass limits in the light slepton scenario obtained via the canonical jets + $\met$ channel may be relaxed by as much as 25 $%$ compared to the existing limits. But the corresponding same sign dilepton (SSD) + jets + $\met$ signal will yield enhanced limits competitive with the strongest limits currently available. This is illustrated with the help of benchmark scenarios at the generator level using PYTHIA. If the gluinos are just beyond the current reach of the LHC, then the generic n-lepton + m-jets + missing energy signal may discriminate between different DM producing mechanisms by comparing the signals corresponding to different values of n. This is illustrated by simulating the signals for n = 0 and n = 2 (the SSD signal).
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The supersymmetric particles (sparticles) belonging exclusively to the electroweak sector of the minimal supersymmetric standard model (MSSM) may hold the key to the observed dark matter relic density in the universe even if all strongly interacting sparticles are very heavy. | background 0.99 | 0.10 | 0.14 | hedged possibility 1.00 |
| s1 | The importance of the light EW sparticles in DM physics and in producing spectacular collider signals is emphasized. | background 0.67 | 0.18 | 0.08 | asserted 0.96 |
| s2 | It is shown that even the preliminary data on the direct searches of these sparticles at the LHC, significantly constrain the parameter space of the MSSM compatible with the observed relic density and provide useful hints about the future search prospects. | result 0.94 | 0.83 | 0.66 | asserted 1.00 |
| s3 | If in addition to the electroweak sparticles the gluinos are also within the reach of the LHC experiments, then the gluino mass limits in the light slepton scenario obtained via the canonical jets + $\met$ channel may be relaxed by as much as 25 $%$ compared to the existing limits. | result 0.98 | 0.68 | 0.12 | hedged possibility 0.95 |
| s4 | But the corresponding same sign dilepton (SSD) + jets + $\met$ signal will yield enhanced limits competitive with the strongest limits currently available. | result 0.96 | 0.61 | 0.12 | asserted 0.87 |
| s5 | This is illustrated with the help of benchmark scenarios at the generator level using PYTHIA. | method 1.00 | 0.85 | 0.03 | asserted 0.96 |
| s6 | If the gluinos are just beyond the current reach of the LHC, then the generic n-lepton + m-jets + missing energy signal may discriminate between different DM producing mechanisms by comparing the signals corresponding to different values of n. | result 0.51 | 0.42 | 0.10 | hedged possibility 1.00 |
| s7 | This is illustrated by simulating the signals for n = 0 and n = 2 (the SSD signal). | method 0.96 | 0.86 | 0.05 | asserted 0.95 |
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The paper
Original abstract
The supersymmetric particles (sparticles) belonging exclusively to the electroweak sector of the minimal supersymmetric standard model (MSSM) may hold the key to the observed dark matter relic density in the universe even if all strongly interacting sparticles are very heavy. The importance of the light EW sparticles in DM physics and in producing spectacular collider signals is emphasized. It is shown that even the preliminary data on the direct searches of these sparticles at the LHC, significantly constrain the parameter space of the MSSM compatible with the observed relic density and provide useful hints about the future search prospects. If in addition to the electroweak sparticles the gluinos are also within the reach of the LHC experiments, then the gluino mass limits in the light slepton scenario obtained via the canonical jets + $\met$ channel may be relaxed by as much as 25 $%$ compared to the existing limits. But the corresponding same sign dilepton (SSD) + jets + $\met$ signal will yield enhanced limits competitive with the strongest limits currently available. This is illustrated with the help of benchmark scenarios at the generator level using PYTHIA. If the gluinos are just beyond the current reach of the LHC, then the generic n-lepton + m-jets + missing energy signal may discriminate between different DM producing mechanisms by comparing the signals corresponding to different values of n. This is illustrated by simulating the signals for n = 0 and n = 2 (the SSD signal).
Human review
References
How the literature uses it
24 arXiv papers cite this in 29 sentences
Papers citing it · 14 sentences without a confident label
Uses its method or tool 1 paper
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We essentially follow the procedure of Ref. [ref] and introduce appropriate ratios of the cross-sections of channels characterized by different values of $n$ and for $$ beyond the LHC limits.
The Electroweak Sector of the pMSSM in the Light of LHC - 8 TeV and Other Data · Gluino Mass Limits in Different Models and Their Characteristic Signatures · 0.85
Cites it as support 1 paper
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The advent of slepton searches at the LHC has only strengthened this conclusion [ref] .
Neutralino Dark Matter with Light Staus · Introduction · 1.00
Cites it as background 13 papers
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A number of phenomenological studies already exist which have analysed the implications of electroweakino searches and related topics at the LHC [ref] .
Revisiting the Exclusion Limits from Direct Chargino-Neutralino Production at the LHC · Introduction · 0.96
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Recently, a number of studies have considered the status of the pMSSM post 7 and/or 8 TeV runs of the LHC [ref] and more specifically of the light neutralino.
The invisible decay of Higgs boson in the context of a thermal and non-thermal relic in MSSM · Introduction · 0.89
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In RPC scenarios, light electroweakinos and sleptons play a crucial role in dark matter phenomenology, and several phenomenological analyses have addressed this issue along with the interpretations of LHC limits for various production and decay modes [ref] .
Complementary probes of bilinear R-parity violating SUSY models with a winolike LSP via neutrino oscillations and at the LHC · Introduction · 0.93
What it cites · 56 sentences without a confident label
Builds on 2 papers
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In this paper we shall extend the analysis of [ref] using more recent LHC data including the measurement of the Higgs boson mass [ref] and the results of the direct searches for the electroweak(EW) sparticles.
Many faces of low mass neutralino dark matter in the unconstrained MSSM, LHC data and new signals · Introduction · 0.94
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In this paper we shall extend the analysis of [ref] using more recent LHC data including the measurement of the Higgs boson mass [ref] and the results of the direct searches for the electroweak(EW) sparticles.
Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC · Introduction · 0.94
Uses the method or tool of 6 papers
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DM relic density has been computed by micrOMEGAs (v.2.4.1) [ref] .
Indirect search for dark matter with micrOMEGAs2.4 · Neutralino DM in the MSSM with light EW sparticles · 0.99
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The next to leading order (NLO) cross-section for the $$ pair production have been computed by PROSPINO 2.144 [ref] with CTEQ6.6M PDF [ref] .
Implications of CTEQ global analysis for collider observables · Collider Signals and Other Observables · 1.00
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The next to leading order (NLO) cross-section for the $$ pair production have been computed by PROSPINO 2.144 [ref] with CTEQ6.6M PDF [ref] .
Squark and Gluino Production at Hadron Colliders · Collider Signals and Other Observables · 1.00
Uses data or values from 8 papers
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Observed 95$%$ CL exclusion contours in the $μ- M_2$ plane in the LGRSa, LGRSb, LGRSc models introduced above have been obtained by ATLAS [ref] from unsuccessful chargino-neutralino searches.
Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in sqrt(s) = 7 TeV pp collisions with the ATLAS detector · The LGRS Model : · 0.93
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The observed DM relic density ($Ωh^2$) in the universe measured by the Wilkinson Microwave Anisotropy Probe (WMAP) collaboration [ref] is given by $Ωh^2$ = 0.1157 $±$ 0.0023.
Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation · Neutralino DM in the MSSM with light EW sparticles · 1.00
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We have also considered the constraints from CMS [ref] in the LGRS model with variable slepton mass.
Search for electroweak production of charginos and neutralinos using leptonic final states in pp collisions at sqrt(s) = 7 TeV · The LGRS Model : · 0.82
Compares with 1 paper
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Recently this model has been constrained by simultaneously using the ATLAS data on chargino - neutralino search and the $(g-2)_μ$ data (see Figs. 1(a) - 1(c) of [ref] ) These constraints can not be directly compared with the similar ones obtained by ATLAS [ref] , as they were obtained with different MSSM inputs.
Muon g-2 vs LHC in Supersymmetric Models · Collider Signals and Other Observables · 0.83
Cites as background 17 papers
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The ATLAS collaboration have searched for chargino-neutralino ($-$) pair production [ref] within the following frameworks.
Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in sqrt(s) = 7 TeV pp collisions with the ATLAS detector · Neutralino DM in the MSSM with light EW sparticles · 0.81
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The ATLAS collaboration have searched for chargino-neutralino ($-$) pair production [ref] within the following frameworks.
Search for direct slepton and gaugino production in final states with two leptons and missing transverse momentum with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV · Neutralino DM in the MSSM with light EW sparticles · 0.81
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Naturally the search for SUSY had been a top priority programme at the recently concluded experiments at the Large Hadron Collider (LHC) at 7 and 8 TeV [ref] and will continue to occupy the central stage of the upcoming LHC experiments at 13/14 TeV.
Search for new physics in events with same-sign dileptons and b jets in pp collisions at sqrt(s) = 8 TeV · Introduction · 0.81
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