Puzzles of Dark Matter - More Light on Dark Atoms?

Abstract

Positive results of dark matter searches in experiments DAMA/NaI and DAMA/LIBRA confronted with results of other groups can imply nontrivial particle physics solutions for cosmological dark matter. Stable particles with charge -2, bound with primordial helium in O-helium "atoms" (OHe), represent a specific nuclear-interacting form of dark matter. Slowed down in the terrestrial matter, OHe is elusive for direct methods of underground Dark matter detection using its nuclear recoil. However, low energy binding of OHe with sodium nuclei can lead to annual variations of energy release from OHe radiative capture in the interval of energy 2-4 keV in DAMA/NaI and DAMA/LIBRA experiments. At nuclear parameters, reproducing DAMA results, the energy release predicted for detectors with chemical content other than NaI differ in the most cases from the one in DAMA detector. Moreover there is no bound systems of OHe with light and heavy nuclei, so that there is no radiative capture of OHe in detectors with xenon or helium content. Due to dipole Coulomb barrier, transitions to more energetic levels of Na+OHe system with much higher energy release are suppressed in the correspondence with the results of DAMA experiments. The proposed explanation inevitably leads to prediction of abundance of anomalous Na, corresponding to the signal, observed by DAMA.

Contribution to Proceedings of XIII Bled Workshop "What Comes beyond the Standard Model?"

References in corpus (26)

• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• New results from DAMA/LIBRA
• First Dark Matter Results from the XENON100 Experiment
• The DAMA/LIBRA apparatus
• Exciting Dark Matter and the INTEGRAL/SPI 511 keV signal
• Particle physics catalysis of thermal Big Bang Nucleosynthesis
• Dark Matter from new Technicolor Theories
• Towards Closing the Window on Strongly Interacting Dark Matter: Far-Reaching Constraints from Earth's Heat Flow
• Towards Working Technicolor: Effective Theories and Dark Matter
• Composite dark matter from a model with composite Higgs boson
• Implications of CoGeNT and DAMA for Light WIMP Dark Matter
• A light scalar WIMP through the Higgs portal and CoGeNT
• Big Bang Nucleosynthesis with Long Lived Charged Massive Particles
• Strong Interactive Massive Particles from a Strong Coupled Theory
• Mirror dark matter and the new DAMA/LIBRA results: A simple explanation for a beautiful experiment
• DAMA and WIMP dark matter
• Complex Scalar Dark Matter vis-à-vis CoGeNT, DAMA/LIBRA and XENON100
• Form Factor Dark Matter
• Resonant Dark Matter
• The Cosmology of Composite Inelastic Dark Matter
• Composite Dark Matter and Puzzles of Dark Matter Searches
• Search for Dark Matter
• Uranus's anomalously low excess heat constrains strongly interacting dark matter
• A Simple Explanation for DAMA with Moderate Channeling
• On the origin of families of quarks and leptons - predictions for four families
• Parametrization of the Relativistic ($\sigma -\omega$) Model for Nuclear Matter

Cited by in corpus (5)

• Fundamental Particle Structure in the Cosmological Dark Matter
• Physics of Dark Matter in the Light of Dark Atoms
• Decaying Dark Atom constituents and cosmic positron excess
• Effects of dark atom excitations
• Balancing Asymmetric Dark Matter with Baryon Asymmetry by Sphaleron Transitions