Please use this identifier to cite or link to this item:
http://bura.brunel.ac.uk/handle/2438/7618
Title: | Measurement of the single top tW associated production cross section at 7 TeV with 4.9 fb-1 of data in the dilepton decay channel at the LHC using the CMS detector |
Authors: | Martin, William Patrick |
Advisors: | Hobson, PR |
Keywords: | Physics;LHC;Top quark;CMS;W Boson |
Issue Date: | 2013 |
Publisher: | Brunel University School of Engineering and Design PhD Theses |
Abstract: | The first measurement of the production cross section for a single top quark in association with a W boson with the CMS experiment at the Large Hadron Collider is presented. The analysed data is from proton-proton collisions at a centre-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 4.9 fb-1. The analysis focuses on the leptonic final states of the process and implements a cut-based method. The final state consists of two leptons, two neutrinos and a jet from the fragmentation of a b-quark. The primary source of background events arises from tt(overbar) production, followed by Z/gamma* processes. The observed signal has a significance of 3:5sigma and corresponds to a cross section measurement of 14:9+5:0 -5:1 (stat + syst) pb, in agreement with the Standard Model expectations. |
Description: | This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University. |
URI: | http://bura.brunel.ac.uk/handle/2438/7618 |
Appears in Collections: | Electronic and Electrical Engineering Dept of Electronic and Electrical Engineering Theses |
Files in This Item:
File | Description | Size | Format | |
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FulltextThesis.pdf | 2.86 MB | Adobe PDF | View/Open |
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