Résultats des tests en faisceau sur les bouchons du calorimètre électromagnétique d'ATLAS - Séparation électrons-jets

Abstract : ATLAS is one of the four experiments being built on the future proton-proton collider at CERN : the LHC. This experiment has a large physics program, from Standard
Model to new physics. The search for the Higgs boson in two photons or in four leptons, or the search of Z' or W' needs a good energy resolution for the electromagnetic calorimeter.
This thesis describes the beam tests performed on three modules of the electromagnetic end cap calorimeter. A 0.6% non-uniformity, and a 0.7% energy resolution global constant term (dominant at high energy) has been obtained. Moreover, a study on the separation between electrons and jets is also performed. This study shows that a jets rejection factor of $10^5$ can be obtained keeping an electron efficiency better than 78%.
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Submitted on : Wednesday, October 11, 2006 - 4:05:40 PM
Last modification on : Thursday, January 18, 2018 - 1:55:03 AM
Long-term archiving on : Tuesday, April 6, 2010 - 7:23:53 PM

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Cedric Serfon. Résultats des tests en faisceau sur les bouchons du calorimètre électromagnétique d'ATLAS - Séparation électrons-jets. Physique des Hautes Energies - Expérience [hep-ex]. Université de la Méditerranée - Aix-Marseille II, 2005. Français. ⟨tel-00105593⟩

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