# Search for Dark Matter Particles Produced in Association with a Top Quark Pair at $\sqrt {s} = 13$ TeV

## Abstract

A search is performed for dark matter particles produced in association with a top quark pair in proton-proton collisions at $\sqrt {s} = 13$ TeV. The data correspond to an integrated luminosity of 35.9  $fb^{−1}$ recorded by the CMS detector at the LHC. No significant excess over the standard model expectation is observed. The results are interpreted using simplified models of dark matter production via spin-0 mediators that couple to dark matter particles and to standard model quarks, providing constraints on the coupling strength between the mediator and the quarks. These are the most stringent collider limits to date for scalar mediators, and the most stringent for pseudoscalar mediators at low masses.

## Abstract

A search is performed for dark matter particles produced in association with a top quark pair in proton-proton collisions at $\sqrt {s} = 13$ TeV. The data correspond to an integrated luminosity of 35.9  $fb^{−1}$ recorded by the CMS detector at the LHC. No significant excess over the standard model expectation is observed. The results are interpreted using simplified models of dark matter production via spin-0 mediators that couple to dark matter particles and to standard model quarks, providing constraints on the coupling strength between the mediator and the quarks. These are the most stringent collider limits to date for scalar mediators, and the most stringent for pseudoscalar mediators at low masses.

## Statistics

### Citations

Dimensions.ai Metrics
2 citations in Web of Science®
5 citations in Scopus®
Google Scholar™

### Downloads

6 downloads since deposited on 09 Jan 2020
6 downloads since 12 months
Detailed statistics

## Additional indexing

Item Type: Journal Article, refereed, original work 07 Faculty of Science > Physics Institute 530 Physics English 2019 09 Jan 2020 08:53 18 Feb 2020 11:02 American Physical Society 0031-9007 Green Publisher DOI. An embargo period may apply. https://doi.org/10.1103/PhysRevLett.122.011803

## Download

Preview
Content: Published Version
Filetype: PDF
Size: 1MB
View at publisher
Licence: