DAMA/LIBRA-phase2 in WIMP effective models

Abstract

The DAMA/LIBRA collaboration has recently released updated results from their search for the annual modulation signal expected from Dark Matter (DM) scattering in their NaI detectors. We have fitted the updated DAMA result for the modulation amplitudes in terms of a Weakly Interacting Massive Particle (WIMP) signal, parameterizing the interaction with nuclei in terms of the most general effective Lagrangian for a WIMP particle spin up to 1/2, systematically assuming dominance of one of the 14 possible interaction terms, and assuming for the WIMP velocity distribution a standard Maxwellian. We find that most of the couplings of the non-relativistic effective Hamiltonian can provide a better fit compared to the standard Spin Independent interaction case, and with a reduced fine-tuning of the three parameters (WIMP mass, WIMP-nucleon effective cross-section and ratio between the WIMP-neutron and the WIMP-proton couplings). Moreover, effective models for which the cross section depends explicitly on the WIMP incoming velocity can provide a better fit of the DAMA data at large values of $m_{\chi }$ compared to the standard velocity-independent cross-section due to a different phase of the modulation amplitudes. All the best fit solutions are in tension with exclusion plots of both XENON1T and PICO60.

17 pages, 5 figures, 1 table. One high-energy control bin added to the fit, results of Table 1 updated accordingly, no change in the conclusions with the exception of model c5. Some references added and more details provided in the discussion. Updated to published version

References in corpus (14)

• Dark Matter Results from 225 Live Days of XENON100 Data
• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• New results from DAMA/LIBRA
• Search for Low-Mass WIMPs with SuperCDMS
• Results from a Low-Energy Analysis of the CDMS II Germanium Data
• First dark matter search results from a 4-kg CF${}_3$I bubble chamber operated in a deep underground site
• Non-relativistic effective theory of dark matter direct detection
• Dark Matter Search Results from the PICO-2L C${}_3$F${}_8$ Bubble Chamber
• Spin-Dependent Macroscopic Forces from New Particle Exchange
• Constraints on Low-Mass WIMP Interactions on 19F from PICASSO
• First model independent results from DAMA/LIBRA-phase2
• New Limits on Interactions between Weakly Interacting Massive Particles and Nucleons Obtained with CsI(Tl) Crystal Detectors
• Dark Matter implications of DAMA/LIBRA-phase2 results
• Model-independent comparison of annual modulation and total rate with direct detection experiments

Cited by in corpus (26)

• The SABRE project and the SABRE PoP
• First results on dark matter annual modulation from ANAIS-112 experiment
• An experiment to search for dark matter interactions using sodium iodide detectors
• Annual modulation results from three-year exposure of ANAIS-112
• Strong constraints from COSINE-100 on the DAMA dark matter results using the same sodium iodide target
• Analysis of backgrounds for the ANAIS-112 dark matter experiment
• Performance of ANAIS-112 experiment after the first year of data taking
• Paleo-detectors: Searching for Dark Matter with Ancient Minerals
• Present and projected sensitivities of Dark Matter direct detection experiments to effective WIMP-nucleus couplings
• Digging for Dark Matter: Spectral Analysis and Discovery Potential of Paleo-Detectors
• Improved model-dependent corollary analyses after the first six annual cycles of DAMA/LIBRA-phase2
• 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 Dark Matter Effective Field Theory Parameters with CRESST-II
• Comparison between DAMA/LIBRA and COSINE-100 in the light of Quenching Factors
• WimPyDD: an object-oriented Python code for the calculation of WIMP direct detection signals
• ANAIS-112 status: two years results on annual modulation
• Anapole Dark Matter after DAMA/LIBRA-phase2
• COSINE-100 and DAMA/LIBRA-phase2 in WIMP effective models
• Proton-philic spin-dependent inelastic Dark Matter (pSIDM) as a viable explanation of DAMA/LIBRA-phase2
• Direct Detection Anomalies in light of $Gaia$ Data
• Inelastic dark matter scattering off Thallium cannot save DAMA
• A DAMA/Libra-phase2 analysis in terms of WIMP-quark and WIMP-gluon effective interactions up to dimension seven
• Assessing the sensitivity of PINGU to effective dark matter-nucleon interactions
• Prospects for Dark Matter signal discovery and model selection via timing information in a low-threshold experiment
• Effective models of WIMP Direct Detection in DAMA/LIBRA-phase2