On the DAMA and CoGeNT Modulations

Abstract

DAMA observes an annual modulation in their event rate, as might be expected from dark matter scatterings, while CoGeNT has reported evidence for a similar modulation. The simplest interpretation of these findings in terms of dark matter-nucleus scatterings is excluded by other direct detection experiments. We consider the robustness of these exclusions with respect to assumptions regarding the scattering and find that isospin-violating inelastic dark matter helps alleviate this tension and allows marginal compatibility between experiments. Isospin-violation can significantly weaken the XENON constraints, while inelasticity enhances the annual modulation fraction of the signal, bringing the CoGeNT and CDMS results into better agreement.

5 pages, 1 figure. v2 updated refs and CoGeNT data, confidence regions now shown at 95%

References in corpus (15)

• New results from DAMA/LIBRA
• Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector
• Constraints on Dark Matter from Colliders
• A search for light dark matter in XENON10 data
• Results from a Low-Energy Analysis of the CDMS II Germanium Data
• The Tevatron at the Frontier of Dark Matter Direct Detection
• The DAMA/LIBRA apparatus
• Inelastic Dark Matter in Light of DAMA/LIBRA
• The Astrophysical Uncertainties Of Dark Matter Direct Detection Experiments
• A Consistent Dark Matter Interpretation For CoGeNT and DAMA/LIBRA
• Exothermic Dark Matter
• Channeling in direct dark matter detection I: channeling fraction in NaI (Tl) crystals
• New Limits on Dark Matter from Super-Kamiokande
• Capture of Inelastic Dark Matter in the Sun
• Prospects For Identifying Dark Matter With CoGeNT

Cited by in corpus (66)

• Annual Modulation of Dark Matter: A Review
• Exploring nu signals in dark matter detectors
• LHC Bounds on Interactions of Dark Matter
• Dark Matter Evidence, Particle Physics Candidates and Detection Methods
• Unitarity and Monojet Bounds on Models for DAMA, CoGeNT, and CRESST-II
• Dark-Matter Admixed Neutron Stars
• A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
• Light dark matter and $Z^{\prime }$ dark force at colliders
• Resolving astrophysical uncertainties in dark matter direct detection
• Light Asymmetric Dark Matter on the Lattice: SU(2) Technicolor with Two Fundamental Flavors
• Dark Matter investigation by DAMA at Gran Sasso
• LHC and Tevatron bounds on the dark matter direct detection cross-section for vector mediators
• Antiprotons from dark matter annihilation in the Galaxy: astrophysical uncertainties
• The unbearable lightness of being: CDMS versus XENON
• Long-Range Forces in Direct Dark Matter Searches
• Discovering Dark Matter Through Flavor Violation at the LHC
• Light Magnetic Dark Matter in Direct Detection Searches
• A dark matter interpretation for the ARCADE excess?
• Can CoGeNT and DAMA Modulations Be Due to Dark Matter?
• Dark-Matter Harmonics Beyond Annual Modulation
• Equilibrium Structure and Radial Oscillations of Dark Matter Admixed Neutron Stars
• A Bayesian view of the current status of dark matter direct searches
• Implications of CoGeNT's New Results For Dark Matter
• A CoGeNT Modulation Analysis
• Dark Matter and Dark Forces from a supersymmetric hidden sector
• Light Dark Matter in the light of CRESST-II
• Elastic scattering signals of solar neutrinos with enhanced baryonic currents
• Origins of the Isospin Violation of Dark Matter Interactions
• Very light right-handed sneutrino dark matter in the NMSSM
• Model-independent comparison of annual modulation and total rate with direct detection experiments
• Improved determination of the WIMP mass from direct detection data
• Tools for Studying Low-Mass Dark Matter at Neutrino Detectors
• Kinetic and mass mixing with three abelian groups
• On the annual modulation signal in dark matter direct detection
• Minimal hidden sector models for CoGeNT/DAMA events
• Direct detection and solar capture of spin-dependent dark matter
• Cosmic-ray antiproton constraints on light singlino-like dark matter candidates
• Complementarity of dark matter direct detection: the role of bolometric targets
• What can(not) be measured with ton-scale dark matter direct detection experiments
• Light mediators in dark matter direct detections
• When LEP and Tevatron combined with WMAP and XENON100 shed light on the nature of Dark Matter
• Probing dark matter streams with CoGeNT
• Time-dependent rate of multicomponent dark matter: Reproducing the DAMA/LIBRA phase-2 results
• New Constraints on Isospin-Violating Dark Matter
• Accretion-Induced Collapse of Dark Matter Admixed White Dwarfs -- I: Formation of Low-mass Neutron Stars
• Light dark matter versus astrophysical constraints
• An optimistic CoGeNT analysis
• Implications of the latest XENON100 and cosmic ray antiproton data for isospin violating dark matter
• Bulk NaI(Tl) scintillation low energy events selection with the ANAIS-0 module
• Direct Detection of Exothermic Dark Matter with Light Mediator
• Isospin violating dark matter being asymmetric
• Evidence for dark matter modulation in CoGeNT?
• Chasing a consistent picture for dark matter direct searches
• Sterile neutrinos and indirect dark matter searches in IceCube
• Exothermic isospin-violating dark matter after SuperCDMS and CDEX
• Invisible Higgs and Scalar Dark Matter
• The XENON100 exclusion limit without considering Leff as a nuisance parameter
• Search at the CERN LHC for a light neutralino of cosmological interest
• Saas-Fee Lecture Notes: Multi-messenger Astronomy and Dark Matter
• Direct and indirect constraints on isospin-violating dark matter
• Constraints on dark matter interactions from the first results of DarkSide-50
• Bayesian analysis of multiple direct detection experiments
• Cosmic-ray antiproton constraints on light dark matter candidates
• Isospin Violating Dark Matter Search by Nuclear Emulsion Detector
• Exothermic Dark Matter with Light Mediator after LUX and PandaX-II in 2016
• Probing Isospin-Violating Dark Matter