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Background suppression for a top quark mass measurement in the lepton+jets ttbar decay channel and Alignment of the ATLAS silicon detectors with cosmic rays
The first part of this thesis deals with the suppression of background sources contributing to the event sample used for the determination of the top quark mass. Jet merging scales of a kT jet algorithm are used as event shapes and a multivariate technique is applied to discriminate signal from W+je...
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| Lenguaje: | eng |
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2013
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| Acceso en línea: | http://cds.cern.ch/record/1511031 |