Dark Matter @ LHC 2018 (#DMLHC2018)

CMS combined tt+DM search with 2016 data

5 Apr 2018, 14:30

15m

Room 1.403+1.404 (first floor) (U. Heidelberg / KIP)

Default track Open Session C)

Speaker

Stanislava Sevova (Northwestern University (US))

Description

Dark matter production in association with a top quark pair is widely considered the most direct probe of spin-0 mediated dark matter production. A search for tt+DM which incorporates all major decay modes and the first statistical combination of these channels using 35.9/fb collected by the CMS detector in 2016 is presented. The result is the most stringent constraint to date on spin-0 mediated tt+DM, covering significant parameter space and uniquely presented in the mass-mass and couplings-mass planes. The limits set on the scalar mediator are also the strongest result for a collider dark matter search in any final state.

Presentation materials

ttdm_dmatlhc_ssevova.pdf