Year: 2018
Type: article
Abstract: 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 $300\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ $(3\text{ }\text{ }{\mathrm{ab}}^{\ensuremath{-}1})$ of data, on-shell scalar mediators with a coupling strength ${g}_{S}^{t}=1$ to top quarks can be probed up to masses of 180(360) GeV. Single-top-associated dark matter production should thus be included as an independent search channel in the LHC dark matter program.
Institution: Heidelberg University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Award: G2413146129
OpenAlex ID: W2776742008