Search for dark matter particles produced in association with a top quark pair at root s=13 TeV

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2019) Search for dark matter particles produced in association with a top quark pair at root s=13 TeV. Physical Review Letters, 122 (1). pp. 1-19. ISSN 1079-7114 E-ISSN 0031-9007

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Abstract

A search is performed for dark matter particles produced in association with a top quark pair in protonproton collisions at ffiffi s p ¼ 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.

Item Type:	Article (Journal)
Additional Information:	7861/71587
Uncontrolled Keywords:	Search for dark matter particles; Association with a top quark pair; Root s=13 TeV
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Physics
Depositing User:	Dr Mohd Adli MD Ali
Date Deposited:	11 Apr 2019 16:19
Last Modified:	02 Aug 2019 12:07
URI:	http://irep.iium.edu.my/id/eprint/71587

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