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Bonn 2010 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 38: Top-Quarks IV

T 38.2: Vortrag

Donnerstag, 18. März 2010, 17:00–17:15, HG Aula

Estimation of the uncertainty of the W+jets background for σtt in the lepton+jets final state at ATLAS in 10 TeV p-p collisions — •Balint Radics — University of Bonn, Bonn, Germany

The talk will discuss the expected precision of a data-driven estimation of the W+jets background in the top pair production cross section measurement using 10 TeV proton-proton collisions at the LHC with an integrated luminosity of 200 pb−1. The method itself uses the similarity of W and Z production in proton-proton collisions and estimates the W+jets rate in the top signal region using the ratio of rates of W and Z production as a function of the jet multiplicity. A summary of the method will be given and the various statistical and systematical uncertainties will be discussed.

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