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

TL;DR

This paper estimates the properties and detection prospects of a 70 GeV dark matter WIMP, analyzing indirect, direct, and collider detection cross-sections, and finds they are within reach of current or near-future experiments.

Contribution

The paper provides a comprehensive analysis of a 70 GeV WIMP's detection cross-sections across multiple methods, aligning theoretical predictions with current experimental limits.

Findings

WIMP mass estimated at 70 GeV consistent with gamma-ray and antiproton data.

Direct detection cross-section slightly above 10^{-48} cm^2, near current experimental sensitivity.

Collider production cross-section around 1 femtobarn, potentially observable at the LHC.

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 $\langle \sigma_{ann} v \rangle = 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.