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Jet Reconstruction and Kinematic Fitting of the Top Quark Pair Production at CLIC at √s = 3 TeV

Top quark physics, due to its possible link with new physics, is a critical topic now that the Standard Model has been experimentally verified. A complete method to reconstruct top quarks pairs at the proposed Compact LInear Collider project is presented here. In this study, MC generated events of e...

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Autor principal: Galy-Fajou, Theo
Lenguaje:eng
Publicado: 2016
Materias:
Acceso en línea:http://cds.cern.ch/record/2130608
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author Galy-Fajou, Theo
author_facet Galy-Fajou, Theo
author_sort Galy-Fajou, Theo
collection CERN
description Top quark physics, due to its possible link with new physics, is a critical topic now that the Standard Model has been experimentally verified. A complete method to reconstruct top quarks pairs at the proposed Compact LInear Collider project is presented here. In this study, MC generated events of e+e− → tt have been used to tune and optimize algorithms in order to reconstruct faithfully the decay products of the top quarks. An emphasis is made on the flavour identification of the jets since it is critical to identify correctly identify the jets to remove most of the background. The reconstructed jets are fitted to the topology with the KLFitter algorithms that have been adapted for CLIC. Using a multi-variable analysis, it finds the best permutation of jets with the best set of parameters using the kinematics of the event. The results of this technique applied on a sample of 49500 e+e− → tt events (corresponding to 850 fb−1 at √s = 3 TeV) is presented here.
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institution Organización Europea para la Investigación Nuclear
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spelling cern-21306082019-09-30T06:29:59Zhttp://cds.cern.ch/record/2130608engGaly-Fajou, TheoJet Reconstruction and Kinematic Fitting of the Top Quark Pair Production at CLIC at √s = 3 TeVParticle Physics - ExperimentTop quark physics, due to its possible link with new physics, is a critical topic now that the Standard Model has been experimentally verified. A complete method to reconstruct top quarks pairs at the proposed Compact LInear Collider project is presented here. In this study, MC generated events of e+e− → tt have been used to tune and optimize algorithms in order to reconstruct faithfully the decay products of the top quarks. An emphasis is made on the flavour identification of the jets since it is critical to identify correctly identify the jets to remove most of the background. The reconstructed jets are fitted to the topology with the KLFitter algorithms that have been adapted for CLIC. Using a multi-variable analysis, it finds the best permutation of jets with the best set of parameters using the kinematics of the event. The results of this technique applied on a sample of 49500 e+e− → tt events (corresponding to 850 fb−1 at √s = 3 TeV) is presented here.CERN-THESIS-2015-288oai:cds.cern.ch:21306082016-02-09T08:05:33Z
spellingShingle Particle Physics - Experiment
Galy-Fajou, Theo
Jet Reconstruction and Kinematic Fitting of the Top Quark Pair Production at CLIC at √s = 3 TeV
title Jet Reconstruction and Kinematic Fitting of the Top Quark Pair Production at CLIC at √s = 3 TeV
title_full Jet Reconstruction and Kinematic Fitting of the Top Quark Pair Production at CLIC at √s = 3 TeV
title_fullStr Jet Reconstruction and Kinematic Fitting of the Top Quark Pair Production at CLIC at √s = 3 TeV
title_full_unstemmed Jet Reconstruction and Kinematic Fitting of the Top Quark Pair Production at CLIC at √s = 3 TeV
title_short Jet Reconstruction and Kinematic Fitting of the Top Quark Pair Production at CLIC at √s = 3 TeV
title_sort jet reconstruction and kinematic fitting of the top quark pair production at clic at √s = 3 tev
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2130608
work_keys_str_mv AT galyfajoutheo jetreconstructionandkinematicfittingofthetopquarkpairproductionatclicats3tev