# Observation of top quark production in association with a Z boson at CMS

- Institution: CERN
- Department: LHC Seminar
- Speaker: Didar Dobur
- Year: 2018
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3007190)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Data collected during LHC Run 2 open the window to increasingly rare processes of top quark production. Furthermore, new analysis techniques lead to large improvements in sensitivity. We report the first observation of the production of a single top quark with a Z boson (tZq) in final states with three leptons, based on data collected by the CMS experiment in the years 2016 and 2017 at a centre-of-mass energy of 13 TeV. The measured cross section is compatible with standard model predictions. The presentation will also include further recent CMS results on top physics. .

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## Lectures

1. [Observation of top quark production in association with a Z boson at CMS](https://invisiblenetwork.ai/learn/cern/3007190/5097bf982823), 57 min (CERN's player)