Have we found conclusive evidence for dark matter through direct detection experiments?

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YANG Jun. Have we found conclusive evidence for dark matter through direct detection experiments?[J]. Chinese Physics C, 2014, 38(4): 045101. doi: 10.1088/1674-1137/38/4/045101
YANG Jun. Have we found conclusive evidence for dark matter through direct detection experiments?[J]. Chinese Physics C, 2014, 38(4): 045101.  doi: 10.1088/1674-1137/38/4/045101 shu
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Received: 2013-02-21
Revised: 2013-11-03
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Have we found conclusive evidence for dark matter through direct detection experiments?

    Corresponding author: YANG Jun,
  • Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China

Abstract: A WIMP-model-independent method is used to examine the existing evidence for low mass dark matter. Using XENON100's recent result of 224.6 live days × 34 kg exposure and PICASSO's result that was published in 2012, we have obtained constraints on the couplings |an| < 0.4 and |ap| < 0.3, corresponding to spin-dependent cross-sections of σn < 2.5 × 10-38 cm2 and σp < 1.4 × 10-38cm2 for a WIMP mass of 10 GeV/c2. It is shown that the spin-independent isospin-violating dark matter model also fails to reconcile the recent result from XENON100 with the positive results from DAMA, CoGeNT and CDMS-Ⅱ.

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