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Global interpretation of direct Dark Matter searches after CDMS-II results

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Kopp,  Joachim
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Schwetz-Mangold,  Thomas
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Citation

Kopp, J., Schwetz-Mangold, T., & Zupan, J. (2010). Global interpretation of direct Dark Matter searches after CDMS-II results. Journal of Cosmology and Astroparticle Physics, 2010(02): 014, pp. 1-20. doi:10.1088/1475-7516/2010/02/014.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-723A-D
Abstract
We perform a global fit to data from Dark Matter (DM) direct detection experiments, including the recent CDMS-II results. We discuss possible interpretations of the DAMA annual modulation signal in terms of spin-independent and spin-dependent DM-nucleus interactions, both for elastic and inelastic scattering. We find that for the spin-dependent inelastic scattering off protons a good fit to all data is obtained. We present a simple toy model realizing such a scenario. In all the remaining cases the DAMA allowed regions are disfavored by other experiments or suffer from severe fine tuning of DM parameters with respect to the galactic escape velocity. Finally, we also entertain the possibility that the two events observed in CDMS-II are an actual signal of elastic DM scattering, and we compare the resulting CDMS-II allowed regions to the exclusion limits from other experiments.