Abstract
dc:description.abstractThe W boson mass has been extracted using W-pairs decaying into evqq and mvqq final states. The events were selected from the data collected with the ALEPH detector during the years 1998, 1999 and 2000, corresponding to a total integrated luminosity of about 650 pb-1. A kinematic fit imposing four-momentum conservation is then applied to improve the invariant mass resolution. The W boson mass is obtained from the invariant mass spectrum by a Monte Carlo reweighting method. Since the statistical and systematical uncertainties are at the same level, the latter are investigated in great detail. The presented W boson mass is then included in a preliminary world average which is used to extract a upper limit on the Higgs boson mass.
Degree
thesis:*- Level thesis:degree_level
- thesis.doctoral
- Grantor dc:publisher
- Universität Heidelberg
- Year
- 2002
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Leibenguth, Guillaume
- Contributors dc:contributor
-
- Kluge, Eike-Erik
Identifiers
dc:identifier.*- Repository record source_url
- http://www.ub.uni-heidelberg.de/archiv/1941
- OAI identifier oai:identifier
- oai:archiv.ub.uni-heidelberg.de:1941