Tau Portal Dark Matter models at the LHC

Abstract

Motivated by the Galactic Center gamma-ray excess in the Fermi-LAT data, we study the signatures of a class of tau portal dark matter (DM) models where DM particles preferentially couple to tau leptons at the LHC. We consider the constraints from the DM direct detection and investigate the sensitivity of the LHC to di-tau plus missing energy signatures. We find that the LHC with a high luminosity of 3000 fb${}^{-1}$ can test the tau portal DM models with fermionic mediators in the mass range of $120\sim 450$ GeV.

10 pages, 5 figures

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• Study of WIMP annihilations into a pair of on-shell scalar mediators