WIMP astronomy and particle physics with liquid-noble and cryogenic direct-detection experiments

Abstract

Once weakly-interacting massive particles (WIMPs) are unambiguously detected in direct-detection experiments, the challenge will be to determine what one may infer from the data. Here, I examine the prospects for reconstructing the local speed distribution of WIMPs in addition to WIMP particle-physics properties (mass, cross sections) from next-generation cryogenic and liquid-noble direct-detection experiments. I find that the common method of fixing the form of the velocity distribution when estimating constraints on WIMP mass and cross sections means losing out on the information on the speed distribution contained in the data and may lead to biases in the inferred values of the particle-physics parameters. I show that using a more general, empirical form of the speed distribution can lead to good constraints on the speed distribution. Moreover, one can use Bayesian model-selection criteria to determine if a theoretically-inspired functional form for the speed distribution (such as a Maxwell-Boltzmann distribution) fits better than an empirical model. The shape of the degeneracy between WIMP mass and cross sections and their offset from the true values of those parameters depends on the hypothesis for the speed distribution, which has significant implications for consistency checks between direct-detection and collider data. In addition, I find that the uncertainties on theoretical parameters depends sensitively on the upper end of the energy range used for WIMP searches. Better constraints on the WIMP particle-physics parameters and speed distribution are obtained if the WIMP search is extended to higher energy (~ 1 MeV).

25 pages, 27 figures, matches published version

References in corpus (32)

• A Theory of Dark Matter
• Bayes in the sky: Bayesian inference and model selection in cosmology
• Trigonometric Parallaxes of Massive Star Forming Regions: VI. Galactic Structure, Fundamental Parameters and Non-Circular Motions
• New results from DAMA/LIBRA
• Cats and Dogs, Hair and A Hero: A Quintet of New Milky Way Companions
• The Milky Way's Circular Velocity Curve to 60 kpc and an Estimate of the Dark Matter Halo Mass from Kinematics of ~2400 SDSS Blue Horizontal Branch Stars
• Asymmetric Dark Matter
• The RAVE Survey: Constraining the Local Galactic Escape Speed
• Constraints on Dark Matter from Colliders
• Results from a Low-Energy Analysis of the CDMS II Germanium Data
• The accretion origin of the Milky Way's stellar halo
• First Dark Matter Results from the XENON100 Experiment
• The WIMPless Miracle: Dark Matter Particles without Weak-scale Masses or Weak Interactions
• Hadronic Uncertainties in the Elastic Scattering of Supersymmetric Dark Matter
• Thin, thick and dark discs in LCDM
• Phase-space structure in the local dark matter distribution and its signature in direct detection experiments
• Galactic masers and the Milky Way circular velocity
• Integrating Out Astrophysical Uncertainties
• Experimental constraints on a dark matter origin for the DAMA annual modulation effect
• The Dark Matter at the End of the Galaxy
• Interpreting Dark Matter Direct Detection Independently of the Local Velocity and Density Distribution
• Complementarity of Dark Matter Direct Detection Targets
• Observational bounds on the cosmic radiation density
• Detecting the Milky Way's Dark Disk
• Nuclear recoil energy scale in liquid xenon with application to the direct detection of dark matter
• Dependence of direct detection signals on the WIMP velocity distribution
• Model-Independent Determination of the WIMP Mass from Direct Dark Matter Detection Data
• Identification of Dark Matter particles with LHC and direct detection data
• Determining the WIMP mass from a single direct detection experiment, a more detailed study
• How well will ton-scale dark matter direct detection experiments constrain minimal supersymmetry?
• Solving the LHC Inverse Problem with Dark Matter Observations
• Determination of Dark Matter Properties at High-Energy Colliders

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• The Local Dark Matter Density
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• A new determination of the local dark matter density from the kinematics of K dwarfs
• Resolving astrophysical uncertainties in dark matter direct detection
• Astrophysical uncertainties on direct detection experiments
• Astrophysical uncertainties on the local dark matter distribution and direct detection experiments
• Global fits of the dark matter-nucleon effective interactions
• A Dark Matter Hurricane: Measuring the S1 Stream with Dark Matter Detectors
• Dark Shards: velocity substructure from Gaia and direct searches for dark matter
• Axion astronomy with microwave cavity experiments
• A new halo-independent approach to dark matter direct detection analysis
• Measuring the local dark matter density with LAMOST DR5 and Gaia DR2
• Dark Matter Direct Search Rates in Simulations of the Milky Way and Sagittarius Stream
• Taking Halo-Independent Dark Matter Methods Out of the Bin
• Fundamental statistical limitations of future dark matter direct detection experiments
• Model independent determination of the dark matter mass from direct detection experiments
• The tilt of the velocity ellipsoid in the Milky Way disk
• Quantifying (dis)agreement between direct detection experiments in a halo-independent way
• Prospects for direct detection of dark matter in an effective theory approach
• A self-consistent phase-space distribution function for the anisotropic Dark Matter halo of the Milky Way
• Taming astrophysical bias in direct dark matter searches
• Directional detection of dark matter streams
• Improved determination of the WIMP mass from direct detection data
• Probing the Local Velocity Distribution of WIMP Dark Matter with Directional Detectors
• Nuclear uncertainties in the spin-dependent structure functions for direct dark matter detection
• New directional signatures from the non-relativistic effective field theory of dark matter
• Understanding WIMP-baryon interactions with direct detection: A Roadmap
• Studying generalised dark matter interactions with extended halo-independent methods
• Digging for Dark Matter: Spectral Analysis and Discovery Potential of Paleo-Detectors
• Optimized velocity distributions for direct dark matter detection
• Probing WIMP particle physics and astrophysics with direct detection and neutrino telescope data
• Bracketing the impact of astrophysical uncertainties on local dark matter searches
• Halo-Independent Direct Detection Analyses Without Mass Assumptions
• Halo-independent determination of the unmodulated WIMP signal in DAMA: the isotropic case
• Reconstructing the three-dimensional local dark matter velocity distribution
• Parametrizing the local dark matter speed distribution: a detailed analysis
• Indirect Probes of Dark Matter and Globular Cluster Properties From Dark Matter Annihilation within the Coolest White Dwarfs
• Opening the energy window on direct dark matter detection
• Dark Matter in 3D
• Impact of substructure on local dark matter searches
• Dark Matter Studies Entrain Nuclear Physics
• Harmonics in the Dark-Matter Sky: Directional Detection in the Fourier-Bessel Basis
• Discretising the velocity distribution for directional dark matter experiments
• Integrating In Dark Matter Astrophysics at Direct Detection Experiments
• Observationally inferred dark matter phase-space distribution and direct detection experiments
• Measuring the local Dark Matter density in the laboratory
• Partial Rate Matrix for Dark Matter Scattering
• Wavelet-Harmonic Integration Methods
• Effects of Threshold Energy on Reconstructions of Properties of Low-Mass WIMPs in Direct Dark Matter Detection Experiments