Search for Dark Matter Particles Produced in Association with a Top Quark Pair at [radical] s= 13 TeV
Name
PhysRevLett.122.011803.pdf
Size
1.49 MB
Format
Adobe PDF
Checksum (MD5)
7de1b74d141f2421d2b83f8189e29bd4
Author(s)
The CMS Collaboration
Date Issued
January 2019
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Sirunyan, A. M., A. Tumasyan, W. Adam, F. Ambrogi, E. Asilar, T. Bergauer, J. Brandstetter, et al. “Search for Dark Matter Particles Produced in Association with a Top Quark Pair at
S=13 TeV.” Physical Review Letters 122, no. 1 (January 10, 2019). © 2019 CERN, for the CMS Collaboration
Version
Final published version
Abstract
A search is performed for dark matter particles produced in association with a top quark pair in proton-proton collisions at [radical]s=13 TeV. The data correspond to an integrated luminosity of 35.9 fb[superscript −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. Keywords: Particle dark matter; Particle production; Top quark; Hadron colliders
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.122.011803
