Neutralino Dark Matter in Scenarios with Early Matter Domination

Abstract

We investigate the production of neutralino dark matter in a cosmological scenario featuring an early matter dominated era ending at a relatively low reheating temperature. In such scenarios different production mechanisms of weakly interacting massive particles (WIMPs), besides the well--studied thermal production, can be important. This opens up new regions of parameter space where the lightest neutralino, as the best--known supersymmetric (SUSY) WIMP, obtains the required relic abundance. Many of these new sets of parameters are also compatible with current limits from colliders as well as direct and indirect WIMP searches. In particular, in standard cosmology bino--like neutralinos, which emerge naturally as lightest neutralino in many models, can have the desired relic density only in some finetuned regions of parameter space where the effective annihilation cross section is enhanced by co--annihilation or an $s-$channel pole. In contrast, if the energy density of the universe was dominated by long--lived PeV--scale particles (e.g. moduli or Polonyi fields), bino--like neutralinos can obtain the required relic density over wide regions of supersymmetric parameter space. We identify the interesting ranges of mass and decay properties of the heavy long--lived particles, carefully treating the evolution of the temperature of the thermal background.

arXiv comment27 pages, 6 figures, updated references, minor modifications, as published

References in corpus (53)

• Supersymmetric Dark Matter
• SuSpect: a Fortran Code for the Supersymmetric and Higgs Particle Spectrum in the MSSM
• Neutralino Relic Density including Coannihilations
• Largest temperature of the radiation era and its cosmological implications
• micrOMEGAs: A program for calculating the relic density in the MSSM
• Wino Cold Dark Matter from Anomaly-Mediated SUSY Breaking
• The Neutralino Relic Density in Minimal N=1 Supergravity
• MeV-scale Reheating Temperature and Thermalization of Neutrino Background
• WIMP dark matter candidates and searches - current status and future prospects
• Supersymmetry Breaking in the Early Universe
• Natural SUSY Endures
• What is the lowest possible reheating temperature?
• Multi-TeV Scalars are Natural in Minimal Supergravity
• The Well-Tempered Neutralino
• Non-perturbative Effect on Thermal Relic Abundance of Dark Matter
• Explosive Dark Matter Annihilation
• Production of massive particles during reheating
• Dimensionless constants, cosmology and other dark matters
• Dark matter production in the early Universe: beyond the thermal WIMP paradigm
• Neutralino-Stau Coannihilation and the Cosmological Upper Limit on the Mass of the Lightest Supersymmetric Particle
• Neutralino-Nucleon Scattering Revisited
• Bounds on very low reheating scenarios after Planck
• Neutralino with the Right Cold Dark Matter Abundance in (Almost) Any Supersymmetric Model
• Limits to dark matter annihilation cross-section from a combined analysis of MAGIC and Fermi-LAT observations of dwarf satellite galaxies
• Supersymmetry, Naturalness, and Signatures at the LHC
• Light Scalar Top Quarks and Supersymmetric Dark Matter
• Coannihilation Effects and Relic Abundance of Higgsino-Dominant LSPs
• A Non-thermal WIMP Miracle
• The effect of a late decaying scalar on the neutralino relic density
• Mass Bounds on a Very Light Neutralino
• SUSY models under siege: LHC constraints and electroweak fine-tuning
• Thermalization after/during Reheating
• The Effects of QCD Equation of State on the Relic Density of WIMP Dark Matter
• Dark Matter Production in Late Time Reheating
• Mixed axion/neutralino cold dark matter in supersymmetric models
• Thermalization Process after Inflation and Effective Potential of Scalar Field
• Thermalization after inflation and production of massive stable particles
• Non-thermal Histories and Implications for Structure Formation
• Massive Particle Decay and Cold Dark Matter Abundance
• The Dark Matter Annihilation Boost from Low-Temperature Reheating
• Dark Matter Production in an Early Matter Dominated Era
• Non-thermal Dark Matter in String Compactifications
• Accurate estimate of the relic density and the kinetic decoupling in non-thermal dark matter models
• Dark Matter Freeze-out During Matter Domination
• Dark Matter Production Mechanisms with a Non-Thermal Cosmological History - A Classification
• Supersymmetry, Nonthermal Dark Matter and Precision Cosmology
• Coupled Boltzmann computation of mixed axion neutralino dark matter in the SUSY DFSZ axion model
• How light a higgsino or a wino dark matter can become in a compressed scenario of MSSM
• Bringing Isolated Dark Matter Out of Isolation: Late-time Reheating and Indirect Detection
• Neutralino and gravitino dark matter with low reheating temperature
• On the MSSM Higgsino mass and fine tuning
• Dark Matter Casts Light on the Early Universe
• Enhanced One-Loop Corrections to WIMP Annihilation and their Thermal Relic Density in the Coannihilation Region

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