Early Matter Domination from Long-Lived Particles in the Visible Sector

Abstract

We show that a nonstandard cosmological history with a period of early matter domination driven by a sub-TeV visible-sector particle can arise rather naturally. This scenario involves a long-lived standard model singlet that acquires a thermal abundance at high temperatures from decays and inverse decays of a parent particle with SM charge(s), and subsequently dominates the energy density of the Universe as a frozen species. Entropy generation at the end of early matter domination dilutes the abundance of dangerous relics (such as gravitinos) by a factor as large as $10^4$. The scenario can accommodate the correct dark matter relic abundance for cases with $⟨{\sigma }_{\mathrm{ann}}v{⟩}_{\mathrm{f}}\lessgtr 3\times 10^{-26}$cm${}^3$s${}^{-1}$. More importantly, the allowed parameter space can be directly probed by proposed searches for neutral long-lived particles at the energy frontier, allowing us to use particle physics experiments to reconstruct the cosmological history just prior to big bang nucleosynthesis.

arXiv comment15 pages, 8 figures; reference added

References in corpus (46)

• Particle Dark Matter: Evidence, Candidates and Constraints
• Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi-LAT Data
• Baryogenesis from Flat Directions of the Supersymmetric Standard Model
• Largest temperature of the radiation era and its cosmological implications
• Wino Cold Dark Matter from Anomaly-Mediated SUSY Breaking
• Reheating in Inflationary Cosmology: Theory and Applications
• Nonperturbative Dynamics Of Reheating After Inflation: A Review
• Searching for Dark Matter Annihilation in Recently Discovered Milky Way Satellites with Fermi-LAT
• Big-Bang Nucleosynthesis and Gravitino
• Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case
• MeV-scale reheating temperature and thermalization of oscillating neutrinos by radiative and hadronic decays of massive particles
• Bounds on very low reheating scenarios after Planck
• Neutralino with the Right Cold Dark Matter Abundance in (Almost) Any Supersymmetric Model
• New Detectors to Explore the Lifetime Frontier
• Non-thermal Dark Matter and the Moduli Problem in String Frameworks
• GeV-Scale Thermal WIMPs: Not Even Slightly Dead
• A Non-thermal WIMP Miracle
• Cosmological Moduli and the Post-Inflationary Universe: A Critical Review
• Search for new physics in final states with an energetic jet or a hadronically decaying W or Z boson and transverse momentum imbalance at $\sqrt{s}=$ 13 TeV
• Reheating Effects in the Matter Power Spectrum and Implications for Substructure
• Thermal Dark Matter From A Highly Decoupled Sector
• Constraint on the Reheating Temperature from the Decay of the Polonyi Field
• Nucleosynthesis Constraints on a Massive Gravitino in Neutralino Dark Matter Scenarios
• Co-Decaying Dark Matter
• Non-thermal Histories and Implications for Structure Formation
• The Dark Matter Annihilation Boost from Low-Temperature Reheating
• Cladogenesis: Baryon-Dark Matter Coincidence from Branchings in Moduli Decay
• Homeopathic Dark Matter, or how diluted heavy substances produce high energy cosmic rays
• Coupled Boltzmann calculation of mixed axion/neutralino cold dark matter production in the early universe
• A TeV Scale Model for Baryon and Lepton Number Violation and Resonant Baryogenesis
• Mirage in the Sky: Non-thermal Dark Matter, Gravitino Problem, and Cosmic Ray Anomalies
• Concentrated Dark Matter: Enhanced Small-scale Structure from Co-Decaying Dark Matter
• A Simple Testable Model of Baryon Number Violation: Baryogenesis, Dark Matter, Neutron-Antineutron Oscillation and Collider Signals
• Coupled Boltzmann computation of mixed axion neutralino dark matter in the SUSY DFSZ axion model
• Unified TeV Scale Picture of Baryogenesis and Dark Matter
• Structure Formation during an early period of matter domination
• Annihilation Signatures of Hidden Sector Dark Matter Within Early-Forming Microhalos
• Breaking a dark degeneracy: The gamma-ray signature of early matter domination
• Bringing Isolated Dark Matter Out of Isolation: Late-time Reheating and Indirect Detection
• Natural GeV Dark Matter and the Baryon-Dark Matter Coincidence Puzzle
• Constraining Nonthermal Dark Matter's Impact on the Matter Power Spectrum
• Quasidecoupled state for dark matter in nonstandard thermal histories
• A Supersymmetric Model for Dark Matter and Baryogenesis Motivated by the Recent CDMS Result
• Superheavy Dark Matter from String Theory
• Probing Light Nonthermal Dark Matter at the LHC
• Distinguishing Standard Model Extensions using Monotop Chirality at the LHC

Cited by in corpus (10)

• Probing Miracle-less WIMP Dark Matter via Gravitational Waves Spectral Shapes
• Imprint of PBH domination on gravitational waves generated by cosmic strings
• Matter-antimatter asymmetry and dark matter stability from baryon number conservation
• Dark Matter and Baryogenesis from Visible-Sector Long-Lived Particles
• Thermal keV dark matter in a gauged B-L model with cosmic inflation
• Complementarity between Cosmic String Gravitational Waves and long-lived particle searches in a laboratory
• Dark matter from mediator decay in early matter domination
• The Stochastic Gravitational Wave Background from Primordial Gravitational Atoms
• Cosmology from Strong Interactions
• Forecasting Constraints on Non-Thermal Light Massive Relics from Future CMB Experiments (CMB-S4/Simons Observatory)