CERN Accelerating science

ATLAS Note
Report number	ATL-PHYS-PUB-2013-005
Title	Monte Carlo generator comparisons to ATLAS measurements constraining QCD radiation in top anti-top final states
Corporate Author(s)	The ATLAS collaboration
Publication	2013
Imprint	24 Mar 2013
Number of pages	20
Note	All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PUBNOTES/ATL-PHYS-PUB-2013-005
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	Top final state, systematic uncertainties. Monte Carlo event generators ; TOP
Abstract	Recently the ATLAS collaboration has measured several final state observables that are sensitive to additional parton radiation in top anti-top quark final states produced in proton-proton collisions at a centre-of-mass energies of $sqrt{s}=7$ TeV. These measurements are compared to modern Monte Carlo generators implementing several different models and with systematic model parameter variations. Future measurements to constrain parton radiation are also proposed and the predictions of various Monte Carlo generators are compared.
Scientific contact person	Conveners, Top, (atlas-phys-top-conveners@cern.ch)
Copyright/License	Preprint: (License: CC-BY-4.0)

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