An independent assessment of significance of annual modulation in COSINE-100 data
arXiv:1907.07199 · doi:10.21105/astro.1907.07199
Abstract
We perform an independent search for annual modulation caused by dark matter-induced scatterings in the recently released COSINE-100 data. We test the hypothesis that the data contains a sinusoidal modulation against the null hypothesis that the data consists of only background. We compare the significance using frequentist, information theoretic techniques (such as AIC and BIC), and also using the Bayesian model comparison technique. The information theory-based tests mildly prefer a constant background over a sinusoidal signal with the same period as that found by the DAMA collaboration. The Bayesian test however strongly prefers a background model. This is the first proof of principles demonstration of application of Bayesian and information theory based techniques to COSINE-100 data to assess the significance of annual modulation.
arXiv comment7 pages, 2 figures. Analysis code and data available from https://github.com/aditikrishak/COSINE100_analysis
References in corpus (15)
- Supersymmetric Dark Matter
- MultiNest: an efficient and robust Bayesian inference tool for cosmology and particle physics
- Information criteria for astrophysical model selection
- How many cosmological parameters?
- A Nested Sampling Algorithm for Cosmological Model Selection
- First model independent results from DAMA/LIBRA-phase2
- Search for a Dark Matter-Induced Annual Modulation Signal in NaI(Tl) with the COSINE-100 Experiment
- The SABRE project and the SABRE PoP
- Astrophysics independent bounds on the annual modulation of dark matter signals
- First search for a dark matter annual modulation signal with NaI(Tl) in the Southern Hemisphere by DM-Ice17
- A comprehensive comparison of cosmological models from latest observational data
- Reevaluation of spin-dependent WIMP-proton interactions as an explanation of the DAMA data
- Probing DAMA/LIBRA in the full parameter space of WIMP effective models of inelastic scattering
- Time-dependent rate of multicomponent dark matter: Reproducing the DAMA/LIBRA phase-2 results
- Limits on Interactions between Weakly Interacting Massive Particles and Nucleons Obtained with NaI(Tl) crystal Detectors
Cited by in corpus (11)
- Migdal effect and photon Bremsstrahlung: improving the sensitivity to light dark matter of liquid argon experiments
- Model Comparison tests of modified gravity from the Eöt-Wash experiment
- Search for Lorentz Invariance Violation from stacked Gamma-Ray Burst spectral lag data
- Variational Inference as an alternative to MCMC for parameter estimation and model selection
- Two Dimensional Clustering of Gamma-Ray Bursts using durations and hardness
- Robust model comparison tests of DAMA/LIBRA annual modulation
- Astrophysical and Cosmological Searches for Lorentz Invariance Violation
- An independent search for annual modulation and its significance in ANAIS-112 data
- Bayesian Analysis of time dependence of DAMA annual modulation amplitude
- Search for variability in Newton's constant using local gravitational acceleration measurements
- Search for Annual Modulation in Combined ANAIS 112 and COSINE 100 Data using Bayesian Model Comparison