Higgsino Dark Matter or Not: Role of Disappearing Track Searches at the LHC and Future Colliders

Abstract

Higgsino in supersymmetric standard models is known to be a promising candidate for dark matter in the Universe. Its phenomenological property is strongly affected by the gaugino fraction in the Higgsino-like state. If this is sizable, in other words, if gaugino masses are less than $\mathcal{O}(10)$ TeV, we may probe the Higgsino dark matter in future non-accelerator experiments such as dark matter direct searches and measurements of electric dipole moments. On the other hand, if gauginos are much heavier, then it is hard to search for Higgsino in these experiments. In this case, due to a lack of gaugino components, the mass difference between the neutral and charged Higgsinos is uniquely determined by electroweak interactions to be around $350$ MeV, which makes the heavier charged state rather long-lived, with a decay length of about $1$ cm. In this letter, we argue that a charged particle with a flight length of $\mathcal{O}(1)$ cm can be probed in disappearing-track searches if we require only two hits in the pixel detector. Even in this case, we can reduce background events with the help of the displaced-vertex reconstruction technique. We study the prospects of this search strategy at the LHC and future colliders for the Higgsino dark matter scenario. It is found that an almost pure Higgsino is indeed within the reach of the future $33$ TeV collider experiments. We then discuss that the interplay among collider and non-accelerator experiments plays a crucial role in testing the Higgsino dark matter scenarios. Our strategy for disappearing-track searches can also enlarge the discovery potential of pure wino dark matter as well as other electroweak-charged dark matter candidates.

7 pages, 3 figures

References in corpus (15)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Results from a search for dark matter in the complete LUX exposure
• Combined Measurement of the Higgs Boson Mass in $pp$ Collisions at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS Experiments
• Cosmology and Astrophysics of Minimal Dark Matter
• Dark Matter Results from First 98.7-day Data of PandaX-II Experiment
• Non-perturbative Effect on Thermal Relic Abundance of Dark Matter
• Higgsino Dark Matter in High-Scale Supersymmetry
• Search for disappearing tracks in proton-proton collisions at sqrt(s) = 8 TeV
• Prospects for Electroweakino Discovery at a 100 TeV Hadron Collider
• Electroweakly-Interacting Dirac Dark Matter
• Supersymmetry from Typicality
• Light Higgsinos in Pure Gravity Mediation
• Illuminating New Electroweak States at Hadron Colliders

Cited by in corpus (52)

• Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case
• LHC-friendly minimal freeze-in models
• Search for disappearing tracks in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Constraining heavy dark matter with cosmic-ray antiprotons
• Hunting wino and higgsino dark matter at the muon collider with disappearing tracks
• Last Electroweak WIMP Standing: Pseudo-Dirac Higgsino Status and Compact Stars as Future Probes
• Singlet-Doublet Dark Matter Freeze-in: LHC displaced signatures versus cosmology
• Search for long-lived charginos based on a disappearing-track signature using 136 fb${}^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Probing new electroweak states via precision measurements at the LHC and future colliders
• The discreet charm of higgsino dark matter - a pocket review
• New Physics Opportunities for Long-Lived Particles at Electron-Proton Colliders
• Charged Fermions Below 100 GeV
• Electroweak Dark Matter at Future Hadron Colliders
• Collider Probes of Real Triplet Scalar Dark Matter
• Discovery reach for wino and higgsino dark matter with a disappearing track signature at a 100 TeV $pp$ collider
• Improved $(g-2{)}_{\mu }$ Measurements and Wino/Higgsino Dark Matter
• Capture of Electroweak Multiplet Dark Matter in Neutron Stars
• Probing Dark Matter with Disappearing Tracks at the LHC
• Cornering Higgsino: Use of Soft Displaced Track
• Lepto-axiogenesis in minimal SUSY KSVZ model
• Search for heavy, long-lived, charged particles with large ionisation energy loss in $pp$ collisions at $\sqrt{s}=13\text{TeV}$ using the ATLAS experiment and the full Run 2 dataset
• The Search for Electroweakinos
• Low-Scale D-term Inflation and the Relaxion
• Muon $g-2$ in Gauge Mediation without SUSY CP Problem
• Complementarity for Dark Sector Bound States
• Search for supersymmetry in final states with disappearing tracks in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Exploring triplet-quadruplet fermionic dark matter at the LHC and future colliders
• Spotting hidden sectors with Higgs binoculars
• Higgsino Dark Matter in a Non-Standard History of the Universe
• How Heavy can Neutralino Dark Matter be?
• Indirect Probe of Electroweakly Interacting Particles at the High-Luminosity Large Hadron Collider
• Searching for Metastable Particles with Sub-Millimeter Displaced Vertices at Hadron Colliders
• Searching for heavy Higgs in supersymmetric final states at the LHC
• Natural SUSY at LHC with Right-Sneutrino LSP
• Radiative Corrections to Aid the Direct Detection of the Higgsino-like Neutralino Dark Matter: Spin-Independent Interactions
• Exploring nearly degenerate higgsinos using mono-$Z/W$ signal
• Taking aim at the wino-higgsino plane with the LHC
• Long Dead Winos
• Precise Estimate of Charged Wino Decay Rate
• Non-perturbative Effects on Electroweakly Interacting Massive Particles at Hadron Collider
• Smallest Halos in Thermal Wino Dark Matter
• Renormalization Effects on Electric Dipole Moments in Electroweakly Interacting Massive Particle Models
• Mono-Higgs and Mono-$Z$ Production in the Minimal Vector Dark Matter Model
• Non-Universal Gaugino Masses in the NMSSM
• A combined approach to the analysis of space and ground experimental data within a simplified E6SSM
• Optimizing pixel tracklet searches for shorter lifetimes
• Indirect Probe of Electroweak-Interacting Particles with Mono-Lepton Signatures at Hadron Colliders
• Non-thermal production of Higgsino dark matter by late-decaying scalar fields
• Probing Electroweak Dark Matter at 14 TeV LHC
• Search for long-lived charginos and $\tau$-sleptons using final states with a disappearing track in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Probing BSM physics with electron-proton colliders
• Dark Matter Energy Deposition and Production from the Table-Top to the Cosmos