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

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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 ... continued below

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20 pages

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Kopp, Joachim; Schwetz, Thomas & Zupan, Jure December 1, 2009.

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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.

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20 pages

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  • Journal Name: JCAP 1002:014,2010

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  • Report No.: FERMILAB-PUB-09-632-T
  • Grant Number: AC02-07CH11359
  • DOI: 10.1088/1475-7516/2010/02/014 | External Link
  • Office of Scientific & Technical Information Report Number: 972092
  • Archival Resource Key: ark:/67531/metadc935107

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  • December 1, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 5, 2016, 6:26 p.m.

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Kopp, Joachim; Schwetz, Thomas & Zupan, Jure. Global interpretation of direct Dark Matter searches after CDMS-II results, article, December 1, 2009; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc935107/: accessed December 11, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.