Dark matter searches in the mono-$Z$ channel at high energy $e^{+}{e}^{-}$ colliders

Abstract

We explore the mono-$Z$ signature for dark matter searches at future high energy $e^{+}{e}^{-}$ colliders. In the context of effective field theory, we consider two kinds of contact operators describing dark matter interactions with electroweak gauge bosons and with electron/positron, respectively. For five benchmark models, we propose kinematic cuts to distinguish signals from backgrounds for both charged leptonic and hadronic decay modes of the $Z$ boson. We also present the experimental sensitivity to cutoff scales of effective operators and compare it with that of the Fermi-LAT indirect search and demonstrate the gains in significance for the several configurations of polarized beams.

12 pages, 7 figures

References in corpus (9)

• PYTHIA 6.4 Physics and Manual
• Constraints on Dark Matter from Colliders
• The Tevatron at the Frontier of Dark Matter Direct Detection
• LEP Shines Light on Dark Matter
• Maverick dark matter at colliders
• Search for dark matter in events with a Z boson and missing transverse momentum in pp collisions at $\sqrt{s}$=8 TeV with the ATLAS detector
• Searching for Dark Matter at the LHC with a Mono-Z
• Illuminating Dark Matter at the ILC
• Collider Bounds on Indirect Dark Matter Searches: The $WW$ Final State

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