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.authorKwan, Tony
dc.contributor.supervisorKeeler, Richard K.
dc.date.accessioned2012-12-07T21:35:31Z
dc.date.available2012-12-07T21:35:31Z
dc.date.copyright2012en_US
dc.date.issued2012-12-07
dc.degree.departmentDepartment of Physics and Astronomy
dc.degree.levelMaster of Science M.Sc.en_US
dc.description.abstractLHC 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.description.scholarlevelGraduateen_US
dc.identifier.urihttp://hdl.handle.net/1828/4340
dc.languageEnglisheng
dc.language.isoenen_US
dc.rights.tempAvailable to the World Wide Weben_US
dc.subjectATLASen_US
dc.subjectLHCen_US
dc.subjectCERNen_US
dc.subjectDrell-Yanen_US
dc.subjectParton distribution functionsen_US
dc.subjectParticle physicsen_US
dc.titleA measurement of the Drell-Yan differential cross section using data from proton-proton collisions at 7 TeV with the ATLAS detectoren_US
dc.typeThesisen_US

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