Non-thermal Dark Matter from Modified Early Matter Domination

Abstract

Thermal freeze-out or freeze-in during a period of early matter domination can give rise to the correct dark matter abundance for $⟨{\sigma }_{\mathrm{ann}}v{⟩}_{\mathrm{f}}<3\times 10^{-26}$ cm${}^3$ s${}^{-1}$. In the standard scenario, a single field that behaves like matter drives the early matter dominated era. However, in realistic models, this epoch may involve more than one field. In this paper, we study the effect of such a modification on the production of dark matter during early matter domination. We show that even a subdominant second field that decays much faster than the dominant one can considerably enhance the temperature of the universe during an early matter-dominated phase. This in turn affects dark matter production via freeze-out/in and opens up the allowed parameter space toward significantly larger dark matter masses. As a result, one can comfortably obtain the correct relic abundance for PeV-scale dark matter for reheating temperatures at or below 10 GeV.

References in corpus (29)

• Particle Dark Matter: Evidence, Candidates and Constraints
• de Sitter Vacua in String Theory
• Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi-LAT Data
• Systematics of Moduli Stabilisation in Calabi-Yau Flux Compactifications
• Baryogenesis from Flat Directions of the Supersymmetric Standard Model
• Largest temperature of the radiation era and its cosmological implications
• Supersymmetry Breaking in the Early Universe
• Searching for Dark Matter Annihilation in Recently Discovered Milky Way Satellites with Fermi-LAT
• Soft Supersymmetry Breaking in KKLT Flux Compactification
• Neutralino with the Right Cold Dark Matter Abundance in (Almost) Any Supersymmetric Model
• GeV-Scale Thermal WIMPs: Not Even Slightly Dead
• Cosmological Moduli and the Post-Inflationary Universe: A Critical Review
• Thermal Dark Matter From A Highly Decoupled Sector
• D-Branes at del Pezzo Singularities: Global Embedding and Moduli Stabilisation
• Primordial black holes from inflaton and spectator field perturbations in a matter-dominated era
• Enhancement of the Dark Matter Abundance Before Reheating: Applications to Gravitino Dark Matter
• Constraint on the Reheating Temperature from the Decay of the Polonyi Field
• Co-Decaying Dark Matter
• Prethermalization Production of Dark Matter
• The Dark Matter Annihilation Boost from Low-Temperature Reheating
• Moduli Stabilisation for Chiral Global Models
• Non-thermal Production of Dark Matter from Primordial Black Holes
• Homeopathic Dark Matter, or how diluted heavy substances produce high energy cosmic rays
• Cladogenesis: Baryon-Dark Matter Coincidence from Branchings in Moduli Decay
• Correlation between Dark Matter and Dark Radiation in String Compactifications
• Non-thermal Dark Matter in String Compactifications
• Moduli Vacuum Misalignment and Precise Predictions in String Inflation
• Concentrated Dark Matter: Enhanced Small-scale Structure from Co-Decaying Dark Matter
• Constraining Non-thermal Dark Matter by CMB

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• How warm are non-thermal relics? Lyman-$\alpha$ bounds on out-of-equilibrium dark matter
• Supercool Composite Dark Matter Beyond 100 TeV
• Dark Matter Production during the Thermalization Era
• Reviving $Z$ and Higgs Mediated Dark Matter Models in Matter Dominated Freeze-out
• Superstring-Inspired Particle Cosmology: Inflation, Neutrino Masses, Leptogenesis, Dark Matter & the SUSY Scale
• A dark clue to seesaw and leptogenesis in a pseudo-Dirac singlet doublet scenario with (non)standard cosmology
• Light Dark Matter from Entropy Dilution
• Stasis in an Expanding Universe: A Recipe for Stable Mixed-Component Cosmological Eras
• Cascades of high-energy SM particles in the primordial thermal plasma
• Scalar Multiplet Dark Matter in a Fast Expanding Universe: resurrection of the desert region
• WIMPs Without Weakness: Generalized Mass Window with Entropy Injection
• Freeze-in Production of Dark Matter Prior to Early Matter Domination
• Superheavy Dark Matter from String Theory
• Forecasting Constraints on Non-Thermal Light Massive Relics from Future CMB Experiments (CMB-S4/Simons Observatory)