Compact Muon Solenoid
LHC, CERN
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| CMS-PAS-EXO-19-003 | ||
| Search for dark matter produced in association with a Z boson in proton-proton collisions at √s= 13 TeV | ||
| CMS Collaboration | ||
| June 2020 | ||
| Abstract: A search for dark matter (DM) particles is performed using events with a Z boson candidate and large missing transverse momentum. The analysis is based on proton-proton collision data at a center-of-mass energy of 13 TeV collected by the CMS experiment at the LHC in 2016-2018, corresponding to an integrated luminosity of 137 fb−1. The search uses the decay channels Z→ee and Z→μμ. No significant excess of events is observed over the background expected from standard model processes. Limits are set on DM production in the context of simplified models with vector, axial-vector, scalar, and pseudoscalar mediators, as well as a two-Higgs-doublet model with an additional pseudoscalar mediator. The limits are also provided for spin-dependent and spin-independent scattering cross sections and are compared to those from direct-detection experiments. The results are also interpreted in the context of models of invisible Higgs boson decays, unparticles, and large extra dimensions. | ||
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Links:
CDS record (PDF) ;
inSPIRE record ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, EPJC 81 (2021) 13. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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