Explaining DAMA with proton-philic spin-dependent inelastic Dark Matter (pSIDM): a frequentist analysis
arXiv:1801.02905
Abstract
Proton-philic spin-dependent inelastic Dark Matter is a Weakly Inelastic Massive Particle scenario that can explain the DAMA yearly modulation effect in compliance with the constraints from other direct detection Dark Matter searches. We obtain updated ranges for its parameters both in a halo-independent approach and adopting a truncated Maxwellian for the WIMP velocity distribution constructing approximate frequentist confidence intervals from an effective chi-square including, among others, the latest experimental constraints from XENON1T, PANDAX-II, SuperCDMS and CDMSlite. In the halo-independent analysis we have implemented the dependence on the WIMP velocity distribution through a step-wise parameterization of the halo function. For the calculation of the profile likelihood we used a Markov Chain Montecarlo generator that required a large number of evaluations of the expected rates. To reduce computational time we introduced expected rates expressions suitable for a fast evaluation through tabulation and interpolation. Our frequentist analysis confirms the present viability of the pSIDM scenario as a possible explanation of the DAMA effect. In terms of the WIMP mass and of the mass splitting we find the 1-sigma ranges $\mbox{12.5 GeV} \le m_χ\le \mbox{15.7 GeV}$, $\mbox{22.1 keV} \le δ\le \mbox{26.1 keV}$ for the halo--independent analysis and $\mbox{11.4 GeV} \le m_χ\le \mbox{13.6 GeV}$, $\mbox{24.4 keV} \le δ\le \mbox{27.0 keV}$ for the Maxwellian case. We find that a full year of data taking of XENON1T should allow to start probing the pSIDM scenario.
arXiv comment22 pages, 8 figures
References in corpus (33)
- First results from the LUX dark matter experiment at the Sanford Underground Research Facility
- Results from a search for dark matter in the complete LUX exposure
- Dark Matter Results From 54-Ton-Day Exposure of PandaX-II Experiment
- First Dark Matter Search Results from the XENON1T Experiment
- Inelastic Dark Matter
- The Effective Field Theory of Dark Matter Direct Detection
- Final model independent result of DAMA/LIBRA-phase1
- Search for Low-Mass WIMPs with SuperCDMS
- Results from a Low-Energy Analysis of the CDMS II Germanium Data
- Improved Limits on Scattering of Weakly Interacting Massive Particles from Reanalysis of 2013 LUX data
- First dark matter search results from a 4-kg CFI bubble chamber operated in a deep underground site
- Model-independent WIMP Scattering Responses and Event Rates: A Mathematica Package for Experimental Analysis
- The RAVE survey: the Galactic escape speed and the mass of the Milky Way
- CDMSlite: A Search for Low-Mass WIMPs using Voltage-Assisted Calorimetric Ionization Detection in the SuperCDMS Experiment
- Final Analysis and Results of the Phase II SIMPLE Dark Matter Search
- Dark Matter Search Results from the PICO-2L CF Bubble Chamber
- Constraints on Low-Mass WIMP Interactions on 19F from PICASSO
- Low-Mass Dark Matter Search with CDMSlite
- Integrating Out Astrophysical Uncertainties
- Spin-Dependent Neutralino-Nucleus Scattering for Nuclei
- Results from the Super Cryogenic Dark Matter Search (SuperCDMS) experiment at Soudan
- Improved dark matter search results from PICO-2L Run 2
- Dark Matter Search Results from the Commissioning Run of PandaX-II
- Improved WIMP-search reach of the CDMS II germanium data
- A new halo-independent approach to dark matter direct detection analysis
- Taking Halo-Independent Dark Matter Methods Out of the Bin
- Quantifying (dis)agreement between direct detection experiments in a halo-independent way
- Search for Low-Mass Dark Matter with CsI(Tl) Crystal Detectors
- Optimized velocity distributions for direct dark matter detection
- Halo-independent determination of the unmodulated WIMP signal in DAMA: the isotropic case
- Generalized spin-dependent WIMP-nucleus interactions and the DAMA modulation effect
- Extended Maximum Likelihood Halo-independent Analysis of Dark Matter Direct Detection Data
- Inelastic dark matter with spin-dependent couplings to protons and large modulation fractions in DAMA