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dc.contributor.advisor Goshaw, Alfred T. en_US
dc.contributor.author Deng, Jianrong en_US
dc.date.accessioned 2008-05-14T16:29:12Z
dc.date.available 2008-05-14T16:29:12Z
dc.date.issued 2008-03-19 en_US
dc.identifier.uri http://hdl.handle.net/10161/623
dc.description Dissertation en_US
dc.description.abstract We present a measurement of ppbar->Zγ + X -> e<sup>+</sup>e<sup>-</sup>γ + X production using proton-antiproton collision data collected at the Collider Detector at Fermilab at a center of mass energy of 1.96 TeV. Zγ production provides a direct test of the triple neutral gauge couplings. A measurement of Zγ production cross section and search for anomalous ZZγ and Zγγ couplings are presented. The data presented are from 1.1 fb<sup>-1</sup> of ppbar integrated luminosity collected at the CDF Detector. Electrons from Z decays are selected with E<sub>t</sub> > 20 GeV. Photons (E<sub>t</sub> > 7 GeV) are required to be well-separated from the electrons. There are 390 eeγ candidate events found with 1.1 fb<sup>-1</sup> of data, compared to the SM prediction of 375.3 à ± 25.2 events. The Standard Model prediction for the cross section for ppbar-> e<sup>+</sup>e<sup>-</sup>γ + X production at √s = 1.96 TeV is 4.5 à ± 0.4 pb. The measured cross section is 4.7 à ± 0.6 pb. The cross section and kinematic distributions of the eeγ events are in good agreement with theoretical predictions. Limits on the ZZγ and Zγγ couplings are extracted using the photon E<sub>t</sub> distribution of eeγ events with M<sub>eeγ</sub> > 100 GeV/c<sup>2</sup>. These are the first limits measured using CDF Run II data. These limits provide important test of the interaction of the photon and the Z boson. en_US
dc.format.extent 8475700 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.subject Physics, Elementary Particles and High Energy en_US
dc.subject Physics, Elementary Particles and High Energy en_US
dc.subject Zgamma en_US
dc.subject Cross en_US
dc.subject section en_US
dc.subject Anomalous couplings en_US
dc.title Measurement of Z +γ Production and Search for Anomalous Triple Gauge Couplings in Proton-antiproton Collisions at √S = 1.96 Tev en_US
dc.type Dissertation en_US
dc.department Physics en_US

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