Supersoft Supersymmetry is Super-Safe

Abstract

We show that supersymmetric models with a large Dirac gluino mass can evade much of the jets plus missing energy searches at LHC. Dirac gaugino masses arise from "supersoft" operators that lead to finite one-loop suppressed contributions to the scalar masses. A little hierarchy between the Dirac gluino mass 5 - 10 times heavier than the squark masses is automatic and technically natural, in stark contrast to supersymmetric models with Majorana gaugino masses. At the LHC, colored sparticle production is suppressed not only by the absence of gluino pair (or associated) production, but also because several of the largest squark pair production channels are suppressed or absent. We recast the null results from the present jets plus missing energy searches at LHC for supersymmetry onto a supersoft supersymmetric simplified model (SSSM). Assuming a massless LSP, we find the strongest bounds are: 748 GeV from a 2j + MET search at ATLAS (4.7 fb^{-1}), and 684 GeV from a combined jets plus missing energy search using ${\alpha }_T$ at CMS (1.1 fb^{-1}). In the absence of a future observation, we estimate the bounds on the squark masses to improve only modestly with increased luminosity. We also briefly consider the further weakening in the bounds as the LSP mass is increased.

13 pages, 8 figures

References in corpus (30)

• PYTHIA 6.4 Physics and Manual
• Search for squarks and gluinos using final states with jets and missing transverse momentum with the ATLAS detector in sqrt(s) = 7 TeV proton-proton collisions
• Simplified Models for a First Characterization of New Physics at the LHC
• Search for Supersymmetry at the LHC in Events with Jets and Missing Transverse Energy
• SUSY, the Third Generation and the LHC
• Flavor in Supersymmetry with an Extended R-symmetry
• The Status of GMSB After 1/fb at the LHC
• MFV SUSY: A Natural Theory for R-Parity Violation
• Focus Point Supersymmetry Redux
• Color-Octet Scalars of N=2 Supersymmetry at the LHC
• Search for new phenomena in final states with large jet multiplicities and missing transverse momentum using sqrt(s)=7 TeV pp collisions with the ATLAS detector
• R-symmetric gauge mediation
• Compressed supersymmetry after 1/fb at the Large Hadron Collider
• Heavy Flavor Simplified Models at the LHC
• A Supersymmetric One Higgs Doublet Model
• RECAST: Extending the Impact of Existing Analyses
• Testing the Majorana Nature of Gluinos and Neutralinos
• Beyond the Minimal Supersymmetric Standard Model: from theory to phenomenology
• Supersymmetry with a Chargino NLSP and Gravitino LSP
• How Many Supersymmetries?
• Pseudo-Dirac Dark Matter Leaves a Trace
• Reduced Fine-Tuning in Supersymmetry with R-parity violation
• Viable Gravity-Mediated Supersymmetry Breaking
• Dirac Neutralinos and Electroweak Scalar Bosons of N=1/N=2 Hybrid Supersymmetry at Colliders
• μto e in R-symmetric Supersymmetry
• Pseudo-Dirac Bino Dark Matter
• Squark Flavor Violation at the LHC
• R-symmetric Gauge Mediation and the MRSSM
• Electric Dipole Moments in PseudoDirac Gauginos
• QCD Corrections to K-Kbar Mixing in R-symmetric Supersymmetric Models

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• Exploring QCD uncertainties when setting limits on compressed SUSY spectra
• Natural Supersymmetry and Implications for Higgs physics
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• Cornering Natural SUSY at LHC Run II and Beyond
• "L=R" -- $U(1{)}_R$ Lepton Number at the LHC
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• Exploring the Higgs sector of the MRSSM with a light scalar
• New Supersoft Supersymmetry Breaking Operators and a Solution to the $\mu$ Problem
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• D-term Triggered Dynamical Supersymmetry Breaking
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• Electroweak Baryogenesis in R-symmetric Supersymmetry
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• The Di-Photon Excess in a Perturbative SUSY Model
• Dark matter scenarios in a constrained model with Dirac gauginos
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• Constraining Electroweakinos in the Minimal Dirac Gaugino Model
• Precise prediction for the W boson mass in the MRSSM
• Exploring color-octet scalar parameter space in minimal $R$-symmetric models
• Small neutrino masses due to R-symmetry breaking for a small cosmological constant
• Supersoft Supersymmetry, Conformal Sequestering, and Single Scale Supersymmetry Breaking
• A Swarm of Bs
• Interpreting 95 GeV di-photon/$b\bar{b}$ excesses as a lightest Higgs boson of the MRSSM
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• Confronting the coloured sector of the MRSSM with LHC data
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• $t\bar{t}t\bar{t}$ signatures through the lens of color-octet scalars
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• Antisplit Supersymmetry
• Status and Implications of BSM Searches at the LHC
• New Calculations in Dirac Gaugino Models: Operators, Expansions, and Effects
• Neutralino Oscillations at the LHC
• Next-to-minimal $R$-symmetric model: Dirac gaugino, Higgs mass and invisible width
• Squark production with R-symmetry beyond NLO at the LHC
• Flavors of Supersymmetry Beyond Vanilla
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• Dirac Gluinos in the Pyramid Scheme
• Resolving a challenging supersymmetric low-scale seesaw scenario at the ILC
• Probing the Supersymmetric Grand Unified Theories at the Future Proton-Proton Colliders and Hyper-Kamiokande Experiment
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• The Right-Handed Slepton Bulk Region for Dark Matter in Generalized No-scale $\mathcal{F}$-$SU(5)$ with Effective Super-Natural Supersymmetry
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• Probing the Supersymmetric Grand Unified Theories with Gravity Mediation at the Future Proton-Proton Colliders and Hyper-Kamiokande Experiment
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• Nambu-Jona-Lasinio Theory and Dynamical Breaking of Supersymmetry