Compact Muon Solenoid
LHC, CERN
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| CMS-PAS-SUS-23-004 | ||
| Search for dark matter production in association with a single top quark | ||
| CMS Collaboration | ||
| 19 July 2024 | ||
| Abstract: A search for the production of a single top quark in association with invisible particles is performed on 138 fb−1 of LHC proton-proton collision data collected at √s= 13 TeV. In this search, a flavor-changing neutral current produces a single top quark or antiquark and an invisible state nonresonantly. The invisible state consists of a hypothetical spin-1 particle acting as a new mediator and decaying to two spin-1/2 dark matter candidates. The analysis searches for events in which the top (anti)quark decays hadronically. No significant excess compatible with that signature is observed. Exclusion limits on the masses of the spin-1 mediator and the dark matter candidates are derived and compared to constraints from the dark matter relic density measurements. In a vector (axial vector) coupling scenario, masses of the spin-1 mediator are excluded up to 1.85 (1.85) TeV with an expectation of 2.0 (2.0) TeV whereas masses of the dark matter candidates are excluded up to 750 (550) GeV with an expectation of 850 (650) GeV. | ||
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Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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