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 2...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 σ〈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.展开更多
文摘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 σ〈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.
