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Alma Mater Studiorum - Università di Bologna
Evaluation of a multi variated analysis for the selection of t-tbar multijet events in the current CMS implemented environment at LHC
Abstract
dc:descriptionIn the present study we are using multi variate analysis techniques to discriminate signal from background in the fully hadronic decay channel of ttbar events. We give a brief introduction to the role of the Top quark in the standard model and a general description of the CMS Experiment at LHC. We have used the CMS experiment computing and software infrastructure to generate and prepare the data samples used in this analysis. We tested the performance of three different classifiers applied to our data samples and used the selection obtained with the Multi Layer Perceptron classifier to give an estimation of the statistical and systematical uncertainty on the cross section measurement.
Degree
thesis:*- Grantor dc:publisher
- Alma Mater Studiorum - Università di Bologna
- Year dc:date
- 2008
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Bacchi, William <1969>
- Contributors dc:contributor
-
- Capiluppi, Paolo
Subjects
dc:subject × 1Rights
dc:rights- Statement dc:rights
-
- info:eu-repo/semantics/openAccess
- Language dc:language
- en
Identifiers
dc:identifier.*- Identifier
- urn:nbn:it:unibo-823
- OAI identifier oai:identifier
- oai:amsdottorato.cib.unibo.it:854