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

被引：121

作者：

Kopp, Joachim ^{[1
]}

Schwetz, Thomas ^{[2
]}

Zupan, Jure ^{[3
,4
]}

机构：

[1] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA

[2] Max Planck Inst Nucl Phys, D-69029 Heidelberg, Germany

[3] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia

[4] Josef Stefan Inst, Ljubljana 1000, Slovenia

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2010年 / 02期

关键词：

dark matter theory; dark matter experiments; EFFICIENCY; LIMITS;

D O I：

10.1088/1475-7516/2010/02/014

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 in elastic scattering off protons a good fit to all data is obtained. We present a simple toy model realizing such a scenario. In all there maining 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.

引用

页数：21

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