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| Author | : Nicola Giacinto Piacquadio |
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| Release | : 2009 |
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| Author | : Royer Edson Ticse Torres |
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| Total Pages | : 182 |
| Release | : 2016 |
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In July 2012, CERN announced the discovery of the Higgs boson, the last missing piece of the Standard Model (SM). The Higgs boson was observed in different channels. Precise measurement of its properties is now very important to investigate for possible deviations from the SM. This thesis presents a search for the Higgs boson produced in association with top quarks and decaying to a b quark pair, the ttH(H→bb) channel, using proton-proton collisions at √s = 13 TeV, collected with the ATLAS detector in 2015 and 2016. This document details in particular the full reconstruction of the ttH(H→bb) system and the discrimination between signal and the main background, tt+jets. The ttbb is a subset of the tt+jets backgrounds recent studies show that there is a large fraction of ttbb events with jets containing two b-hadrons. A new algorithm has been developed to discriminate such jets from single b-hadrons jets. The description of this tool is presented in this thesis.
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| Total Pages | : 332 |
| Release | : 2010 |
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| Author | : David Meder-Marouelli |
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| Total Pages | : 101 |
| Release | : 2005 |
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| Author | : Jonas Zacharias Will |
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| Total Pages | : 0 |
| Release | : 2012 |
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| Author | : Thomas Oliver Ravenscroft |
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| Total Pages | : 196 |
| Release | : 2015 |
| Genre | : Higgs bosons |
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| Author | : Gregory Barbour |
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| Release | : 2022 |
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| Author | : Maria Giovanna Foti |
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| Release | : 2021 |
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| Author | : Georgios Dedes |
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| Total Pages | : 0 |
| Release | : 2008 |
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| Author | : Manfred Groh |
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| Total Pages | : 0 |
| Release | : 2009 |
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