PoS - Proceedings of Science
Volume 397 - The Ninth Annual Conference on Large Hadron Collider Physics (LHCP2021) - Joint sessions
$t\bar{t}X$ results from ATLAS and CMS
P.J. Falke*  on behalf of the ATLAS and CMS Collaborations
Full text: pdf
Pre-published on: October 20, 2021
Published on: November 17, 2021
The associated production of top-quark pairs with $W$ bosons or heavy-flavour jets are rare Standard Model phenomena compared to the inclusive top-quark pair production. Both processes are important background sources for Standard Model measurements like e.g. $t\bar{t}H$ production in the multilepton and $b\bar{b}$ Higgs decay channels or $t\bar{t}t\bar{t}$ production, and thus a precise knowledge of their properties is crucial. Additionally, these production channels can be significant background sources in searches for new physics. The current status of $t\bar{t}W$ and $t\bar{t}+\mathrm{HF}$ measurements performed by the ATLAS and CMS Collaborations is summarised in this article. The measurements are based on data collected from proton-proton collisions with a centre-of-mass energy of $13\,\mathrm{TeV}$ at the Large Hadron Collider at CERN.
DOI: https://doi.org/10.22323/1.397.0096
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