CERN Accelerating science

ATLAS Note
Report number	ATL-PHYS-PROC-2024-089
Title	$t\bar{t}$+heavy flavour measurements with the full run 2 dataset using the ATLAS experiment
Author(s)	Morais Silva Goncalo, Ricardo Jose (Laboratory of Instrumentation and Experimental Particle Physics (PT))
Corporate Author(s)	The ATLAS collaboration
Collaboration	ATLAS Collaboration
Publication	2024
Imprint	16 Oct 2024
Number of pages	6
In:	42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	top-quarks plus jets ; heavy flavour ; TOP
Abstract	The production of top quark pairs in association with heavy-flavour jets ($b/c$) is a difficult process to calculate and model, and is one of the leading sources of background affecting the measurement of processes such as the associated production of a Higgs boson and a top-quark pair, $t\bar{t}H$. To improve our understanding of this process, a new inclusive and differential measurement of the production of $t\bar{t}$ accompanied by a jet initiated by $b$ quarks. The results presented were achieved using the full LHC Run-2 dataset collected by ATLAS.}