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Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at $ \sqrt{s}=13 $ TeV

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Academic year: 2021

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Figure 1: Leading order Feynman diagrams for production of DM pairs (χχ) in association with a Z boson
Figure 3: The distribution in E T miss at the generator level, for the simplified DM model with vector mediator (upper left), EFT DM model (upper right), and unparticle scenarios (lower panel)
Figure 4 shows the distributions of E miss T after preselection in the ee and µµ channels.
Figure 4: The distribution of E T miss after preselection for the Z → e + e − (left) and Z → µ + µ − (right) channels
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