Collider Probes of Real Triplet Scalar Dark Matter

Abstract

We study discovery prospects for a real triplet extension of the Standard Model scalar sector at the Large Hadron Collider (LHC) and a possible future 100 TeV $pp$ collider. We focus on the scenario in which the neutral triplet scalar is stable and contributes to the dark matter relic density. When produced in $pp$ collisions, the charged triplet scalar decays to the neutral component plus a soft pion or soft lepton pair, yielding a disappearing charged track in the detector. We recast current 13TeV LHC searches for disappearing tracks, and find that the LHC presently excludes a real triplet scalar lighter than 248 (275) GeV, for a mass splitting of 172 (160) MeV with $\mathcal{L}=36$fb${}^{-1}$. The reach can extend to 497 (520) GeV with the collection of $3000$fb${}^{-1}$. We extrapolate the 13 TeV analysis to a prospective 100 TeV $pp$ collider, and find that a $\sim 3$ TeV triplet scalar could be discoverable with $\mathcal{L}=30$ ab${}^{-1}$, depending on the degree to which pile up effects are under control. We also investigate the dark matter candidate in our model and corresponding present and prospective constraints from dark matter direct detection. We find that currently XENON1T can exclude a real triplet dark matter lighter than $\sim 3$ TeV for a Higgs portal coupling of order one or larger, and the future XENON20T will cover almost the entire dark matter viable parameter space except for vanishingly small portal coupling.

27 pages, 8 plots; match the published version

References in corpus (19)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• Dark Matter Results From 54-Ton-Day Exposure of PandaX-II Experiment
• Cosmology and Astrophysics of Minimal Dark Matter
• Non-perturbative Effect on Thermal Relic Abundance of Dark Matter
• Bound-state formation for thermal relic dark matter and unitarity
• Standard Model anatomy of WIMP dark matter direct detection II: QCD analysis and hadronic matrix elements
• New Physics in LHC Higgs boson pair production
• Triplet Scalars and Dark Matter at the LHC
• A complete calculation for direct detection of Wino dark matter
• Dark Matter in Inert Triplet Models
• Wino-like Minimal Dark Matter and future colliders
• Discovery reach for wino and higgsino dark matter with a disappearing track signature at a 100 TeV $pp$ collider
• Triplet-Singlet Extension of the MSSM with a 125 Gev Higgs and Dark Matter
• Two-Step Electroweak Symmetry-Breaking: Theory Meets Experiment
• Effective Interaction of Electroweak-Interacting Dark Matter with Higgs Boson and Its Phenomenology
• Zero-Range Effective Field Theory for Resonant Wino Dark Matter I. Framework
• Triplet Scalar Dark Matter and Leptogenesis in an Inverse See-Saw Model of Neutrino Mass Generation
• Renormalization Effects on Electric Dipole Moments in Electroweakly Interacting Massive Particle Models

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• Capture of Electroweak Multiplet Dark Matter in Neutron Stars
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• Two Component Singlet-Triplet Scalar Dark Matter and Electroweak Vacuum Stability
• Scalar Multiplet Dark Matter in a Fast Expanding Universe: resurrection of the desert region
• Systematic approach to $B$-physics anomalies and $t$-channel dark matter
• Custodial Symmetry Breaking and Higgs Signatures at the LHC
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• CP violating dark photon kinetic mixing and type-III seesaw model
• The Higgs Potential in 2HDM extended with a Real Triplet Scalar: A roadmap
• Probing Extended Scalar Sectors with Precision $e^{+}{e}^{-}\to Zh$ and Higgs Diphoton Studies
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• Thermal Real Scalar Triplet Dark Matter
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• Two dark matter candidates in a doublet-triplet Higgs model
• Unitarity bounds on extensions of Higgs sector
• Probing low scale leptogenesis through gravitational wave
• Accidental symmetries in the scalar potential of the Standard Model extended with two Higgs triplets