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arXiv · 1712.08065

Dark Matter from Electroweak Single Top Production

Tilman Plehn·Jennifer Thompson·Susanne Westhoff
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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 $300\,\text{fb}^{-1}\,(3\,\text{ab}^{-1})$ 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 $180\,(360)\,\text{GeV}$. Single-top-associated dark matter production should thus be included as an independent search channel in the LHC dark matter program.

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Tilman Plehn, Jennifer Thompson, Susanne Westhoff. 2017-12-21. Dark Matter from Electroweak Single Top Production. https://doi.org/10.1103/physrevd.98.015012

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