Superheavy Thermal Dark Matter and Primordial Asymmetries

Abstract

The early universe could feature multiple reheating events, leading to jumps in the visible sector entropy density that dilute both particle asymmetries and the number density of frozen-out states. In fact, late time entropy jumps are usually required in models of Affleck-Dine baryogenesis, which typically produces an initial particle-antiparticle asymmetry that is much too large. An important consequence of late time dilution, is that a smaller dark matter annihilation cross section is needed to obtain the observed dark matter relic density. For cosmologies with high scale baryogenesis, followed by radiation-dominated dark matter freeze-out, we show that the perturbative unitarity mass bound on thermal relic dark matter is relaxed to $10^{10}$ GeV. We proceed to study superheavy asymmetric dark matter models, made possible by a sizable entropy injection after dark matter freeze-out, and identify how the Affleck-Dine mechanism would generate the baryon and dark asymmetries.

arXiv comment22 pages, 3 figures

References in corpus (39)

• Observation of High-Energy Astrophysical Neutrinos in Three Years of IceCube Data
• Baryogenesis from Flat Directions of the Supersymmetric Standard Model
• Largest temperature of the radiation era and its cosmological implications
• The origin of the matter-antimatter asymmetry
• Wino Cold Dark Matter from Anomaly-Mediated SUSY Breaking
• Model Independent Properties and Cosmological Implications of the Dilaton and Moduli Sectors of 4-d Strings
• Cosmological Implications of Dynamical Supersymmetry Breaking
• Asymmetric Dark Matter: Theories, Signatures, and Constraints
• Review of asymmetric dark matter
• Superheavy dark matter
• Neutralino with the Right Cold Dark Matter Abundance in (Almost) Any Supersymmetric Model
• PeV-Scale Supersymmetry
• Atomic Dark Matter
• The anthropic principle and the mass scale of the Standard Model
• On the gravitational production of superheavy dark matter
• Asymmetric Sneutrino Dark Matter and the Omega(b)/Omega(DM) Puzzle
• Asymmetric WIMP dark matter
• Are IceCube neutrinos unveiling PeV-scale decaying dark matter?
• PeV-Scale Dark Matter as a Thermal Relic of a Decoupled Sector
• Detecting Dark Matter with Imploding Pulsars in the Galactic Center
• A Finely-Predicted Higgs Boson Mass from A Finely-Tuned Weak Scale
• Natural Candidates for Superheavy Dark Matter in String and M Theory
• Big Bang Synthesis of Nuclear Dark Matter
• Relic Abundance of Asymmetric Dark Matter
• Dark matter ignition of type Ia supernovae
• Closing in on Asymmetric Dark Matter I: Model independent limits for interactions with quarks
• A Shift Symmetry in the Higgs Sector: Experimental Hints and Stringy Realizations
• Ultra-high energy cosmic rays from annihilation of superheavy dark matter
• Direct Detection Constraints on Superheavy Dark Matter
• Inflatable Dark Matter
• The Intermediate Scale MSSM, the Higgs Mass and F-theory Unification
• High Energy Neutrinos From Superheavy Dark Matter Annihilation
• The Baryon-Dark Matter Ratio Via Moduli Decay After Affleck-Dine Baryogenesis
• Flooded Dark Matter and S Level Rise
• Superheavy Dark Matter from Thermal Inflation
• Asymmetric Higgsino Dark Matter
• A Dark Matter Candidate with New Strong Interactions
• Complex Hybrid Inflation and Baryogenesis
• Superheavy Dark Matter and Thermal Inflation

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• Asymmetric thermal-relic dark matter: Sommerfeld-enhanced freeze-out, annihilation signals and unitarity bounds
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• Saturated Overburden Scattering and the Multiscatter Frontier: Discovering Dark Matter at the Planck Mass and Beyond
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• Electric But Not Eclectic: Thermal Relic Dark Matter for the XENON1T Excess
• Dark Matter Freeze-out During Matter Domination
• Constraints on Spin-Dependent Dark Matter Scattering with Long-Lived Mediators from TeV Observations of the Sun with HAWC
• Heavy Thermal Relics from Zombie Collisions
• A Combined Astrophysical and Dark Matter Interpretation of the IceCube HESE and Throughgoing Muon Events
• MeV Dark Matter Complementarity and the Dark Photon Portal
• Accelerating Composite Dark Matter Discovery with Nuclear Recoils and the Migdal Effect
• Snowmass2021 Cosmic Frontier White Paper: Ultraheavy particle dark matter
• Turn up the volume: Listening to phase transitions in hot dark sectors
• Reviving $Z$ and Higgs Mediated Dark Matter Models in Matter Dominated Freeze-out
• Self-interacting dark matter without prejudice
• Nuclear Fusion Inside Dark Matter
• Light Dark Matter from Entropy Dilution
• Probing superheavy dark matter with gravitational waves
• Stasis in an Expanding Universe: A Recipe for Stable Mixed-Component Cosmological Eras
• Can the ANITA anomalous events be due to new physics?
• WIMPs with GUTs: Dark Matter Coannihilation with a Lighter Species
• Establishing the Dark Matter Relic Density in an Era of Particle Decays
• Impact of cosmological and astrophysical constraints on dark matter simplified models
• Constraining decaying very heavy dark matter from galaxy clusters with 14 year Fermi-LAT data
• WIMPs Without Weakness: Generalized Mass Window with Entropy Injection
• Novel Gamma-Ray Signatures of PeV-Scale Dark Matter
• Electroweak Asymmetric Early Universe via a Scalar Condensate
• Dissipative Dark Cosmology: From Early Matter Dominance to Delayed Compact Objects
• Gravitational Waves From Dark Sectors, Oscillating Inflatons, and Mass Boosted Dark Matter
• Search for heavy dark matter from dwarf spheroidal galaxies: leveraging cascades and subhalo models
• Decoupling of Asymmetric Dark Matter During an Early Matter Dominated Era
• Diffusion-limited Relic Particle Production
• Secluded Dark Composites and Remnant Binding Fields
• Constraints on ultraheavy dark matter from the CDEX-10 experiment at the China Jinping Underground Laboratory