The impact of going beyond the Maxwell distribution in direct dark matter detection rates

Abstract

We consider direct dark matter detection rates and investigate the difference between a standard Maxwell-Boltzmann velocity distribution and a "realistic" distribution like the ones extracted from numerical N-body simulations. Sizable differences are observed when such results are compared to the standard Maxwell-Boltzmann distribution. For a light target both the total rate and the annual modulation are reduced by ~25%. For a heavy target the total rate is virtually unchanged, whereas the annual modulation is modified by up to 50%, depending on the WIMP mass and detector energy threshold. We also consider the effect of a possible velocity anisotropy, and the effect is found to be largest for a light target For the realistic velocity distribution the anisotropy may reduce the annual modulation, in contrast to the Maxwell-Boltzmann case.

arXiv comment13 pages, 10 figures, accepted by Phys. Rev. D

References in corpus (37)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• The Structure of Cold Dark Matter Halos
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
• Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Temperature Analysis
• A universal density slope - velocity anisotropy relation for relaxed structures
• Effect of the galactic halo modeling on the DAMA/NaI annual modulation result: an extended analysis of the data for WIMPs with a purely spin-independent coupling
• Empirical Models for Dark Matter Halos. II. Inner profile slopes, dynamical profiles, and rho/sigma^3
• Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Beam Profiles, Data Processing, Radiometer Characterization and Systematic Error Limits
• Spin-Dependent Neutralino-Nucleus Scattering for $A\sim 127$ Nuclei
• Directional Sensitivity, WIMP Detection, and the Galactic Halo
• Directional statistics for WIMP direct detection
• Exploring the supersymmetric parameter space by direct search for WIMPs
• Event Rates in Dark Matter Detectors For Neutralinos Including Constraints From The $b\to s\gamma$ Decay
• Triaxial Haloes and Particle Dark Matter Detection
• Effect of halo modelling on WIMP exclusion limits
• Velocity distributions and annual-modulation signatures of weakly-interacting massive particles
• Dark matter distribution function from non-extensive statistical mechanics
• Predictions of Neutralino Dark Matter Event Rates in Minimal Supergravity Unification
• Distribution function of the dark matter
• Annual Modulation Signature for the Direct Detection of Milky Way Wimps and Supergravity Models
• Possible constraints on SUSY-model Parameters from Direct Dark Matter Search
• SEARCHING FOR COLD DARK MATTER
• Theoretical Directional and Modulated Rates for Direct SUSY Dark Matter Detection
• Cold Dark Matter in SUSY Theories. The Role of Nuclear Form Factors and the Folding with the LSP Velocity
• Searching for Supersymmetric Dark Matter - The Directional Rate and the Modulation Effect Due to Caustic Rings
• The nature of dark matter and the density profile and central behavior of relaxed halos
• The modulation effect for supersymmetric dark matter detection with asymmetric velocity dispersion
• Temporal distortion of annual modulation at low recoil energies
• A universal velocity distribution of relaxed collisionless structures
• On The Direct Detection of Dark Matter- Exploring all the signatures of the neutralino-nucleus interaction
• The velocity anisotropy - density slope relation
• Measuring the dark matter velocity anisotropy in galaxy clusters
• What it takes to measure a fundamental difference between dark matter and baryons: the halo velocity anisotropy
• Direct Detection Rates of Dark Matter Coupled to Dark Energy
• Direct Wimp Detection in Directional Experiments
• Direct Dark Matter Detection with Velocity Distribution in the Eddington approach

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• Dark Matter Direct Detection Signals inferred from a Cosmological N-body Simulation with Baryons
• Shaken and Stirred: The Milky Way's Dark Substructures
• Astrophysical uncertainties on direct detection experiments
• The Inert Doublet Model and Inelastic Dark Matter
• The Distribution of Dark Matter in the Milky Way's Disk
• Toward A Consistent Picture For CRESST, CoGeNT and DAMA
• Astrophysical uncertainties on the local dark matter distribution and direct detection experiments
• NIHAO project II: Halo shape, phase-space density and velocity distribution of dark matter in galaxy formation simulations
• Signatures of Dark Matter Scattering Inelastically Off Nuclei
• Dependence of direct detection signals on the WIMP velocity distribution
• Impact of Dark Matter Microhalos on Signatures for Direct and Indirect Detection
• Anisotropic dark matter distribution functions and impact on WIMP direct detection
• Direct detection of WIMPs
• A Bayesian view of the current status of dark matter direct searches
• Dark Matter Direct Search Rates in Simulations of the Milky Way and Sagittarius Stream
• Can Solar Neutrinos be a Serious Background in Direct Dark Matter Searches?
• Quantifying Astrophysical Uncertainties on Dark Matter Direct Detection Results
• A self-consistent phase-space distribution function for the anisotropic Dark Matter halo of the Milky Way
• Dark Matter vs. Neutrinos: The effect of astrophysical uncertainties and timing information on the neutrino floor
• Nuclear uncertainties in the spin-dependent structure functions for direct dark matter detection
• Direct Dark Matter Detection - A spin 3/2 WIMP candidate
• Conservative Force Fields in Non-Gaussian Statistics
• Direct dark matter searches - Test of the Big Bounce Cosmology
• Extragalactic dark matter and direct detection experiments
• Anisotropic q-Gaussian velocity distributions in LambdaCDM halos
• The temperature of hot gas in galaxies and clusters: baryons dancing to the tune of dark matter
• Debris Flows in Direct Dark Matter Searches-The modulation effect
• Modelling the transient processes produced under heavy particle irradiation
• Searching for Dark Matter- Theoretical Rates and Exclusion Plots due to the Spin
• Carter-constant induced mechanism for generation of anisotropic kinetic equilibria in collisionless N-body systems
• Magnification effect of Kerr metric by configurations of collisionless particles in non-isotropic kinetic equilibria
• Halo Density Profiles Consistent with Asymmetric M-B Velocity Distributions-Implications on Direct Dark Matter Searches
• A derivation of (half) the dark matter distribution function
• Predicted modulated differential rates for direct WIMP searches at low energy transfers
• Constraining the Nonextensive Mass Function of Halos from BAO, CMB and X-ray data
• Bayesian analysis of multiple direct detection experiments
• Measurement of the dark matter velocity anisotropy profile in galaxy clusters
• Predicted rates for direct WIMP searches