Constraints on new scalar and vector mediators from LHC dijet searches
Journal article, 2020

We present a reanalysis of the latest results from CMS dijet searches for an integrated luminosity of fb-1 together with preliminary results for fb-1 in the framework of simplified models for dark matter interacting with quarks through the exchange of a scalar, pseudoscalar, vector or pseudovector mediator particle. Within the same framework, we also project the sensitivity of dijet searches in future LHC runs and study how well the parameters of a simplified model could be reconstructed in case of a future discovery at the high luminosity (HL) LHC. Finally, we explore the possibility of discriminating different mediator scenarios by extending the sensitivity of dijet searches for simplified models through the use of angular information. It is the first time that these studies are performed systematically for the case of spin 0 mediators. Among other results we find: (1) no evidence for a dijet signal in the simplified model framework; (2) improvements due to an increased luminosity at the HL-LHC are significant, but mostly for heavy mediators, where dijet searches are limited by statistical, rather than systematical uncertainties; (3) Information on the angular separation of dijets could be used at the HL-LHC to discriminate different mediator scenarios.

dark matter simplified models

beyond the standard model

collider searches


Sebastian Baum

Stockholm University

Riccardo Catena

Subatomic, High Energy and Plasma Physics

Chalmers, Physics, Subatomic and Plasma Physics

Martin Krauss

Universita degli studi - Roma Tre

Chalmers, Physics, Subatomic and Plasma Physics

Journal of Physics G: Nuclear and Particle Physics

0954-3899 (ISSN)

Vol. 47 5 055001

Subject Categories

Subatomic Physics

Bioinformatics (Computational Biology)

Probability Theory and Statistics



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