Dark Matter from Electroweak Single Top Production

Understand

Dark matter scenarios with spin-0 mediators in the $s$-channel have be tested in well-established processes with missing energy, such as top-pair- and mono-jet-associated production.

• We suggest electroweak single top production in association with a dark matter pair as an alternative channel.
• Based on a realistic analysis for the LHC at 13 TeV, we demonstrate how to efficiently discriminate between the signal and Standard-Model background using event kinematics.
• With $300\,\text{fb}^{-1}\,(3\,\text{ab}^{-1})$ of data luminosity, on-shell scalar mediators with a coupling strength $g_S^t=1$ to top quarks can be probed up to masses of $180\,(360)\,\text{GeV}$.