Indirect detection, direct detection, and collider detection cross-sections for a 70 GeV dark matter WIMP

Abstract

Assuming a dark matter fraction ${\Omega }_{DM}=0.27$ and a reduced Hubble constant $h=0.73$, we obtain a value of 70 GeV/c${}^2$ for the mass of the dark matter WIMP we have previously proposed. We also obtain a value for the annihilation cross section given by $⟨{\sigma }_{ann}v⟩=1.19\times 10^{-26}$ cm${}^3$/s in the present universe, consistent with the current limits for dwarf spheroidal galaxies. Both the mass and cross-section are consistent with analyses of the Galactic-center gamma rays observed by Fermi-LAT and the antiprotons observed by AMS-02 if these data are interpreted as resulting from dark matter annihilation. The spin-independent cross-section for direct detection in Xe-based experiments is estimated to be slightly above $10^{-48}$ cm${}^2$, presumably just within reach of the LZ and XENONnT experiments with $\gtrsim 1000$ days of data taking. The cross-section for production in high-energy proton collisions via vector boson fusion is estimated to be $\sim 1$ femtobarn, possibly within reach of the high-luminosity LHC, with $\ge 140$ GeV of missing energy accompanied by two jets.

Comments: 4 pages, proceedings of ICHEP 2022