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

YANG Jun

doi:10.1088/1674-1137/38/4/045101

Chinese Physics C> 2014, Vol. 38> Issue(4) : 045101 DOI: 10.1088/1674-1137/38/4/045101

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

YANG Jun ^,

Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China

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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 |a_n| < 0.4 and |a_p| < 0.3, corresponding to spin-dependent cross-sections of σ_n < 2.5 × 10^-38 cm² and σ_p < 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.

References

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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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沈阳化工大学材料科学与工程学院沈阳 110142

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

Received Date: 2013-02-21

Accepted Date: 2013-11-03

Available Online: 2014-04-05

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 |a_n| < 0.4 and |a_p| < 0.3, corresponding to spin-dependent cross-sections of σ_n < 2.5 × 10^-38 cm² and σ_p < 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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Have we found conclusive evidence for dark matter through direct detection experiments?

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