Compatibility of DAMA/LIBRA dark matter detection with other searches in light of new galactic rotation velocity measurements
- William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, 116 Church St. S.E., Minneapolis, MN 55455 (United States)
- Michigan Center for Theoretical Physics, Department of Physics, University of Michigan, 450 Church St., Ann Arbor, MI 48109 (United States)
- Department of Physics, University of Utah, 115 S 1400 E 201 Salt Lake City, UT 84112 (United States)
The DAMA/NaI and DAMA/LIBRA annual modulation data, which may be interpreted as a signal for the existence of weakly interacting dark matter (WIMPs) in our galactic halo, are re-examined in light of new measurements of the local velocity relative to the galactic halo. In the vicinity of the Sun, the velocity of the Galactic disk has been estimated to be 250 km/s rather than 220 km/s [1]. Our analysis is performed both with and without the channeling effect included. The best fit regions to the DAMA data are shown to move to slightly lower WIMP masses. Compatibility of DAMA data with null results from other experiments (CDMS, XENON10, and CRESST I) is investigated given these new velocities. A small region of spin-independent (elastic) scattering for 7–8 GeV WIMP masses remains at 3σ. Spin-dependent scattering off of protons is viable for 5–15 GeV WIMP masses for direct detection experiments (but has been argued by others to be further constrained by Super-Kamiokande due to annihilation in the Sun)
- OSTI ID:
- 22273048
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2009, Issue 09; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
Similar Records
New DAMA dark-matter window and energetic-neutrino searches
Mirror dark matter and the new DAMA/LIBRA results: A simple explanation for a beautiful experiment