First Experimental Constraints on WIMP Couplings in the Effective Field Theory Framework from CDEX
Science China(Physics,Mechanics & Astronomy)(2021)
摘要
We present weakly interacting massive particles (WIMPs) search results performed using two approaches of effective field theory from the China Dark Matter Experiment (CDEX), based on the data from both CDEX-1B and CDEX-10 stages. In the nonrelativistic effective field theory approach, both time-integrated and annual modulation analyses were used to set new limits for the coupling of WIMP-nucleon effective operators at 90% confidence level (C.L.) and improve over the current bounds in the low m χ region. In the chiral effective field theory approach, data from CDEX-10 were used to set an upper limit on WIMP-pion coupling at 90% C.L. We for the first time extended the limit to the m χ < 6 GeV/ c 2 region.
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关键词
WIMP,EFT,CDEX,dark matter,annual modulation
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