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Study of $Z' \rightarrow e^(+)e^(-)$ in full simulation with regard to discrimination between models beyond the standard model, ATLAS@CERN
Schäfer M.
Thèses. Universität Karlsruhe (15/10/2004), Müller Th. (Dir.)
[oai:tel.archives-ouvertes.fr:tel-00007128] - http://tel.archives-ouvertes.fr/tel-00007128
Study of $Z' \rightarrow e^(+)e^(-)$ in full simulation with regard to discrimination between models beyond the standard model, ATLAS@CERN
Martina Schäfer1
1 :  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
http://lpsc.in2p3.fr
CNRS : UMR5821 – IN2P3 – Université Joseph Fourier - Grenoble I – Institut Polytechnique de Grenoble - Grenoble Institute of Technology
53 avenue des Martyrs - 38026 Grenoble Cedex
France
Thèses
15/10/2004
Aucun
Although experimental results so far agree with predictions of the Standard Model, it is widely felt to be incomplete. Many prospective theories beyond the Standard Model predict extra neutral gauge bosons, denoted by Z', which might be light enough to be accessible at the LHC. Observables sensitive to properties of these extra gauge bosons might be used to discriminate between the different theories beyond the Standard Model. In the present work several of these observables (total decay width, leptonic cross-section and forward-backward asymmetries) are studied at generation level and with a full simulation in the ATLAS detector. The Z' -> e^+e^- decay channel was chosen and two values for the mass of the Z': 1.5TeV and 4TeV. Background is studied as well and it is confirmed that a Z' boson could easily be discovered at the chosen masses. It is shown that even in full simulation the studied observables can be determined with a good precision. In a next step a discrimination strategy has to be developed given the presented methods to extract the variables and their precision.
Physique/Physique des Hautes Energies - Expérience
ATLAS

Universität Karlsruhe
LPSC 0459
Anglais

Müller Th.
Ledroit-Guillon F. (co-directeur)

ATLAS
15/10/2004
Universität Karlsruhe
Müller Th.
Ledroit-Guillon F. (co-directeur)
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