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A measurement of the Drell-Yan differential cross section using data from proton-proton collisions at 7 TeV with the ATLAS detector

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dc.contributor.author Kwan, Tony
dc.date.accessioned 2012-12-07T21:35:31Z
dc.date.available 2012-12-07T21:35:31Z
dc.date.copyright 2012 en_US
dc.date.issued 2012-12-07
dc.identifier.uri http://hdl.handle.net/1828/4340
dc.description.abstract LHC proton-proton collisions at a centre of mass energy of $\sqrt{s} = 7 TeV were observed in 2011. From a 1.68 fb$^{-1}$ sample of the data collected using the ATLAS detector, electron-positron pairs originating from the Drell-Yan process were selected using a cut based analysis. After the selection process, an estimate of the background was determined followed by the selection efficiency, detector resolution, reconstruction efficiency, and kinematic acceptance. Using these, the Drell-Yan differential cross section was calculated as a function of invariant mass between 26 and 66 GeV/c$^2$. This measurement has a precision between 12.4\% and 8.01\% from the lower invariant mass bins to the higher ones. The Drell-Yan cross section in proton-proton collisions depends on empirical quantities known as parton distribution functions which parametrize the structure of the proton. The measurement outlined in this thesis observes a region in parton distribution function phase space previously untouched by experiments. en_US
dc.language English eng
dc.language.iso en en_US
dc.subject ATLAS en_US
dc.subject LHC en_US
dc.subject CERN en_US
dc.subject Drell-Yan en_US
dc.subject Parton distribution functions en_US
dc.subject Particle physics en_US
dc.title A measurement of the Drell-Yan differential cross section using data from proton-proton collisions at 7 TeV with the ATLAS detector en_US
dc.type Thesis en_US
dc.contributor.supervisor Keeler, Richard K.
dc.degree.department Dept. of Physics and Astronomy en_US
dc.degree.level Master of Science M.Sc. en_US
dc.rights.temp Available to the World Wide Web en_US
dc.description.scholarlevel Graduate en_US


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