Precise Relic WIMP Abundance and its Impact on Searches for Dark Matter Annihilation
arXiv:1204.3622 · doi:10.1103/PhysRevD.86.023506
Abstract
If dark matter (DM) is a weakly interacting massive particle (WIMP) that is a thermal relic of the early Universe, then its total self-annihilation cross section is revealed by its present-day mass density. The canonical thermally averaged cross section for a generic WIMP is usually stated as 3*10^-26 cm^3s^-1, with unspecified uncertainty, and taken to be independent of WIMP mass. Recent searches for annihilation products of DM annihilation have just reached the sensitivity to exclude this canonical cross section for 100% branching ratio to certain final states and small WIMP masses. The ultimate goal is to probe all kinematically allowed final states as a function of mass and, if all states are adequately excluded, set a lower limit to the WIMP mass. Probing the low-mass region is further motivated due to recent hints for a light WIMP in direct and indirect searches. We revisit the thermal relic abundance calculation for a generic WIMP and show that the required cross section can be calculated precisely. It varies significantly with mass at masses below 10 GeV, reaching a maximum of 5.2*10^-26 cm^3s^-1 at masses around 0.3 GeV, and is 2.2*10^-26 cm^3s^-1 with feeble mass-dependence for masses above 10 GeV. These results, which differ significantly from the canonical value and have not been taken into account in searches for annihilation products from generic WIMPs, have a noticeable impact on the interpretation of present limits from Fermi-LAT and WMAP+ACT.
12 Pages, 6 figures. Matches published PRD version. Data for the relic annihilation cross section vs. mass is available as an ancillary file
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- Search for Features in the Cosmic-Ray Electron and Positron spectrum measured by the Fermi Large Area Telescope
- Connecting multi-lepton anomalies at the LHC and in Astrophysics with MeerKAT/SKA
- Lux ex tenebris: The imprint of annihilating dark matter on the intergalactic medium during Cosmic Dawn
- Dark Matter Annihilation Feedback in cosmological simulations I: Code convergence and idealised halos
- Search for emerging jets in collisions at TeV with the ATLAS experiment
- Multiwavelength analysis of low surface brightness galaxies to study possible dark matter signature
- Observing the Energetic Universe at Very High Energies with the VERITAS Gamma Ray Observatory
- A new method to constrain annihilating dark matter
- Baryons, multi-hadron systems, and composite dark matter in non-relativistic QCD
- Distinctive signals of frustrated dark matter
- Searches for Particle Dark Matter with gamma-rays
- Constraining annihilating dark matter by x-ray data
- Present and Future constraints on Secluded Dark Matter in the Galactic Halo with TeV Gamma-ray Observatories
- Electroweak resummation of neutralino dark-matter annihilation into high-energy photons
- Constraining annihilating dark matter by radio continuum spectrum of the Large Magellanic Cloud
- Consistent explanation for the cosmic-ray positron excess in -wave Breit-Wigner enhanced dark matter annihilation
- A Novel Scheme for Dark Matter Annihilation Feedback in Cosmological Simulations
- Constraining the population of intermediate mass black holes by gamma-ray data of the Fornax cluster
- Prospects of future MeV telescopes in probing weak-scale Dark Matter
- The Simplest Dark Matter Model at the Edge of Perturbativity
- Illuminating dark matter admixed in neutron stars with simultaneous mass-radius constraints
- TeV gamma-ray sensitivity to velocity-dependent dark matter models in the Galactic Center
- Dark Gauge U(1) Symmetry for an Alternative Left-Right Model
- Dark Gamma Ray Bursts
- Hubble Hullabaloo and String Cosmology
- Spin-dependence of Gravity-mediated Dark Matter in Warped Extra-Dimensions
- Can prompt cusps of WIMP dark matter be detected as individual gamma-ray sources?
- Detection and Calibration of Low-Energy Nuclear Recoils for Dark Matter and Neutrino Scattering Experiments
- Dark Matter Is The New BBN
- Search for Dark Matter Annihilation to gamma-rays from SPT-SZ selected Galaxy Clusters
- Searching for dark matter subhalos in the Fermi-LAT catalog with Bayesian neural networks
- AMS-02 antiprotons and dark matter: Trimmed hints and robust bounds
- Vector Self-Interacting Dark Matter
- Constraints on dark matter interactions from the first results of DarkSide-50
- Combined dark matter search towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS
- Hunting for dark matter subhalos among the Fermi-LAT sources with VERITAS
- Search for pseudoscalar-mediated WIMPs in transitions with missing energy
- A Very Heavy Sneutrino as Viable Thermal Dark Matter Candidate in Extensions of the MSSM
- Probing the coupling of heavy dark matter to nucleons by detecting neutrino signature from the Earth's core
- Light dark-matter window constrained by \boldmath
- Direct detection of dark matter with resonant annihilation
- Scale-Invariant Two Component Dark Matter
- WIMP dark matter in bulk viscous non-standard cosmologies
- Prospects for probing dark matter particles and primordial black holes with the Hongmeng mission using the 21 cm global spectrum at cosmic dawn
- Neutron Dark Matter Decays
- Prospects of indirect searches for dark matter annihilations in the earth with ICAL@INO
- Bayesian Analysis of time dependence of DAMA annual modulation amplitude
- Flavoured with Dark Lepton Seasoning
- A radio-frequency WIMP search with the MeerKAT Galaxy Cluster Legacy Survey
- Composite self-interacting dark matter and Higgs
- Dark Matter Annihilation via Breit-Wigner Enhancement with Heavier Mediator
- Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre
- New constraints on radiative seesaw models from IceCube and other neutrino detectors
- Interpretation of XENON1T excess with MeV boosted dark matter
- A possible signature of annihilating dark matter
- Statistics for dark matter subhalo searches in gamma rays from a kinematically constrained population model: Fermi-LAT-like telescopes
- Fundamental properties of the dark and the luminous matter from Low Surface Brightness discs
- Self-interacting dark matter constraints in a thick dark disk scenario
- Dark matter cooling during early matter-domination boosts sub-earth halos
- Dark Matter Annihilation Feedback in Cosmological Simulations II: The Influence on Gas and Halo Structure
- Indirect searches for realistic sub-GeV Dark Matter models
- DarkFlux: A new tool to analyze indirect-detection spectra of next-generation dark matter models
- A dark matter WIMP that can be detected and definitively identified with currently planned experiments
- Search for GeV-scale Dark Matter from the Galactic Center with IceCube-DeepCore
- Dark Matter Annihilation and Decay Searches with the High Altitude Water Cherenkov (HAWC) Observatory
- FIMP Dark Matter in bulk viscous non-standard cosmologies
- Gauss-Bonnet Cosmology: large-temperature behaviour and bounds from Gravitational Waves
- Interacting light thermal-relic dark matter: self-consistent cosmological bounds
- Dark matter from unification
- Weyl-Invariant Gravity and the Nature of Dark Matter
- A low-mass dark matter project, ALETHEIA: A Liquid hElium Time projection cHambEr In dArk matter
- WIMP Dark Matter in the USSM
- Dark Matter constraints from Planck observations of the Galactic polarized synchrotron emission
- Bounds from multi-messenger astronomy on the Super Heavy Dark Matter
- Reanalysis of the Systematic Uncertainties in Cosmic-Ray Antiproton Flux
- Dark matter constraints from an observation of dSphs and the LMC with the Baikal NT200
- Search for Solar Boosted Dark Matter Particles at the PandaX-4T Experiment
- Supersymmetric -Inflaton Dark Matter
- Testing the predictions of axisymmetric distribution functions of galactic dark matter with hydrodynamical simulations
- Spontaneous Peccei-Quinn symmetry breaking renders sterile neutrino, axion and boson to be candidates for dark matter particles
- Searching for Dark Matter Annihilation with IceCube and P-ONE
- The E6 route to multicomponent dark matter
- WIMP constraints from black hole low-mass X-ray binaries
- Indirect dark matter searches at ultrahigh energy neutrino detectors
- The Galactic Isotropic -ray Background and Implications for Dark Matter
- Experimental signatures of a new dark matter WIMP
- Consistent explanation for the cosmic-ray positron excess in p-wave Sommerfeld-enhanced dark matter annihilation
- Hunting dark matter in galaxy clusters with non-thermal electrons
- Sensitivity of WIMP bounds on the velocity distribution in the limit of a massless mediator
- Exploring the viability of pseudo Nambu-Goldstone boson as ultralight dark matter in a mass range relevant for strong gravity applications
- Dark Matter Searches with the Fermi-LAT in the Direction of Dwarf Spheroidals
- Constraining dark matter by the 511 keV line
- Reexamine the dark matter scenario accounting for the positron excess in a new cosmic ray propagation model
- Freeze-in and freeze-out production of Higgs portal Majorana fermionic dark matter during and after reheating
- Dark Matter and Fundamental Physics Searches with IACTs
- Phenomenology of the Utilitarian Supersymmetric Standard Model
- Probing lepton flavor violating dark matter scenarios via astrophysical photons and positrons
- Interpretation of the Galactic gamma-ray excess with the dark matter indicated by Be and He anomalous transitions
- Dynamical origin of neutrino masses and dark matter from a new confining sector
- A density-responsive scalar-field framework for singularity regularization and dynamical dark energy
- Investigating the dark matter minispikes with the gamma-ray signal from the halo of M31
- Combined search in dwarf spheroidal galaxies for branon dark matter annihilation signatures with the MAGIC telescopes
- Does the Reionization Model Influence the Constraints on Dark Matter Decay or Annihilation?
- Diffusion-limited Relic Particle Production
- Plausible constraints and inflationary production for dark photons
- Inflation: a quantum laboratory on cosmological scales
- Dirac Neutrinos and Dark Matter within a Minimal Discrete Symmetry Model
- Spin-one dark matter and gamma ray signals from the galactic center
- KiDS-Legacy: WIMP dark matter constraints from the cross-correlation of weak lensing and Fermi-LAT gamma rays
- Informational corrections to the early-Universe radiation sector: CET Omega, WIMP freeze-out, and implications for a possible 20 GeV gamma-ray excess
- Gamma Rays from UltraCompact Minihaloes: Effects on the Earth's Atmosphere and Links to Mass Extinction Events
- WIMP decay as a possible Warm Dark Matter model
- Effects of light-mass fermionic dark matter on the equilibrium and stability of white dwarfs
- Leptophilic Dark Matter at Linear Colliders
- Upper limit on dark matter mass in the inert doublet model
- Reviving MeV-GeV Indirect Detection with Inelastic Dark Matter
- Searching for MeV-mass neutrinophilic Dark Matter with Large Scale Dark Matter Detectors
- Feasibility to probe the dynamical scotogenic model at the LHC
- Combined search in dwarf spheroidal galaxies for branon dark matter annihilation signatures with the MAGIC Telescopes
- Large Neutrino-Dark Matter Interactions: From Effective Field Theory to Ultraviolet Completions
- Constraints on dark matter scattering with long lived mediators from observations of the Sun with the Fermi Large Area Telescope
- Signatures of Dipolar Dark Matter on Indirect Detection
- Inelastic Dirac Dark Matter
- Sterile neutrino portals to Majorana dark matter: effective operators and UV completions
- Dark Matter Energy Deposition and Production from the Table-Top to the Cosmos
- Constraining branon dark matter from observations of the Segue 1 dwarf spheroidal galaxy with the MAGIC telescopes
- An Effective Field Theory Treatment of the Production and Annihilation of Magnetic Monopoles and their Relic Abundance
- 130GeV gamma-ray line through axion conversion
- Dark matter constraints from dwarf galaxies with data-driven J-factors
- Extragalactic Searches for Dark Matter Annihilation
- Review on Dark Matter Tools
- Finite temperature QCD crossover at non-zero chemical potential: A Dyson-Schwinger approach
- Boosting (In)direct Detection of Dark Matter
- Relaxed constraints for dark matter with axial coupling to a dark photon
- Effective field theory for resonant wino dark matter
- Impact of Evaporation Barriers on Solar-Captured Dark Matter Distribution and Evaporation Mass
- Vector Portal Pseudo-Goldstone Dark Matter
- Combined analyses of the antiproton production from cosmic-ray interactions and its possible dark matter origin