Simplified Models for Displaced Dark Matter Signatures

Abstract

We propose a systematic programme to search for long-lived neutral particle signatures through a minimal set of displaced searches requiring significant missing transverse energy (dMETs). Our approach is to extend the well-established dark matter simplified models to include displaced vertices. The dark matter simplified models are used to describe the primary production vertex. A displaced secondary vertex, characterised by the mass of the long-lived particle and its lifetime, is added for the displaced signature. We show how these models can be motivated by, and mapped onto, complete models such as gauge-mediated SUSY breaking and models of neutral naturalness. We also outline how this approach may be used to extend other simplified models to incorporate displaced signatures and to characterise searches for long-lived charged particles. Displaced vertices are a striking signature with virtually no backgrounds from SM processes, and thus provide an excellent target for the high-luminosity run of the Large Hadron Collider. The proposed models and searches provide a first step towards a systematic broadening of the displaced dark matter search programme.

References in corpus (37)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Secluded WIMP Dark Matter
• Echoes of a Hidden Valley at Hadron Colliders
• Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations
• Constraints on Dark Matter from Colliders
• A standard format for Les Houches Event Files
• The Tevatron at the Frontier of Dark Matter Direct Detection
• Simplified Models for a First Characterization of New Physics at the LHC
• Stable Massive Particles at Colliders
• Maverick dark matter at colliders
• Discovering the Higgs Through Highly-Displaced Vertices
• Scalar Simplified Models for Dark Matter
• Emerging Jets
• Characterising dark matter searches at colliders and direct detection experiments: Vector mediators
• Hidden On-Shell Mediators for the Galactic Center Gamma-Ray Excess
• Model-Independent Jets plus Missing Energy Searches
• Constraining Dark Sectors at Colliders: Beyond the Effective Theory Approach
• Search for long-lived charged particles in proton-proton collisions at sqrt(s) = 13 TeV
• On the Validity of the Effective Field Theory for Dark Matter Searches at the LHC Part III: Analysis for the $t$-channel
• Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at sqrt(s) = 8 TeV
• LHC and Tevatron bounds on the dark matter direct detection cross-section for vector mediators
• A Pure-Glue Hidden Valley I. States and Decays
• Search for long-lived particles that decay into final states containing two electrons or two muons in proton-proton collisions at sqrt(s) = 8 TeV
• Search for disappearing tracks in proton-proton collisions at sqrt(s) = 8 TeV
• Search for long-lived neutral particles decaying into lepton jets in proton--proton collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Probing Baryogenesis with Displaced Vertices at the LHC
• Search for pair-produced long-lived neutral particles decaying in the ATLAS hadronic calorimeter in $pp$ collisions at $\sqrt{s}$ = 8 TeV
• Lepton Jets from Radiating Dark Matter
• Search for a light Higgs boson decaying to long-lived weakly-interacting particles in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Search for non-pointing and delayed photons in the diphoton and missing transverse momentum final state in 8 TeV $pp$ collisions at the LHC using the ATLAS detector
• Closing the window for compressed Dark Sectors with disappearing charged tracks
• The End of the CMSSM Coannihilation Strip is Nigh
• The Fate of Long-Lived Superparticles with Hadronic Decays after LHC Run 1
• A Unified Theory of Matter Genesis: Asymmetric Freeze-In
• Simplified models of dark matter with a long-lived co-annihilation partner
• Closing in on the Tip of the CMSSM Stau Coannihilation Strip
• Search for new physics with long-lived particles decaying to photons and missing energy in pp collisions at sqrt(s) = 7 TeV

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• Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider
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• Singlet-Doublet Dark Matter Freeze-in: LHC displaced signatures versus cosmology
• A deep neural network to search for new long-lived particles decaying to jets
• The New $\nu$MSM : Radiative Neutrino Masses, keV-Scale Dark Matter and Viable Leptogenesis with sub-TeV New Physics
• Dark Mesons at the LHC
• A feeble window on leptophilic dark matter
• CMS Hardware Track Trigger: New Opportunities for Long-Lived Particle Searches at the HL-LHC
• Jet Substructure from Dark Sector Showers
• The Pursuit of Dark Matter at Colliders - An Overview
• Heavy Higgs of the Twin Higgs Models
• Enhancing Sensitivities to Long-lived Particles with High Granularity Calorimeters at the LHC
• Displaced Vertices from Pseudo-Dirac Dark Matter
• Gamma rays from dark mediators in white dwarfs
• Global Analysis of Dark Matter Simplified Models with Leptophobic Spin-One Mediators using MasterCode
• Off-Diagonal Dark-Matter Phenomenology: Exploring Enhanced Complementarity Relations in Non-Minimal Dark Sectors
• Effective Theories of Dark Mesons with Custodial Symmetry
• Heavy long-lived coannihilation partner from inelastic Dark Matter model and its signatures at the LHC
• Searching for Metastable Particles with Sub-Millimeter Displaced Vertices at Hadron Colliders
• Reconstructing particle masses in events with displaced vertices
• Exploring Constraints on Simplified Dark Matter Model Through Flavour and Electroweak Observables
• Potential for probing three-body decays of Long-Lived Particles with MATHUSLA
• Multi-track Displaced Vertices at B-Factories
• Stopping Dark Mesons in Their Tracks with Long-Lived Particle and Resonant Signatures