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Liss, Tony M. Vondracek, Mark Frank 2011-05-07T12:38:48Z 2011-05-07T12:38:48Z 10000-01-01 1994 Measurements of the production cross section times branching ratio for $W + \gamma$ and $Z + \gamma$ processes, where the W decays into a muon and neutrino and the Z decays into a muon pair, have been made from the analysis of 18.6 $\pm$ 0.7 $pb\sp{-1}$ of high-$P\sb{T}$ muon data from proton-antiproton (pp) collisions. The data were collected with the Collider Detector at Fermilab (CDF) during the 1992-93 run. In a search for central photons ($\vert\eta\vert\ <$ 1.1) with transverse energy above 7 GeV and angular separation from the muon by at least $\Delta R$ = 0.7 we find 7 $W\gamma$ and 4 $Z\gamma$ candidates. This translates into cross section times branching ratios of 9.0 $\pm$ 6.4 pb for the $W\gamma$ process and 6.6 $\pm$ 3.4 pb for the $Z\gamma$ process. Separate measurements were made for photon $E\sb{T}$ values above 11 GeV and 15 GeV. The cross section times branching ratio results were used to calculate a series of cross section ratios. An analysis designed to search for anomalous couplings between the gauge bosons was also carried out using these results. Assuming only one anomalous coupling to be non-zero at a time, the 95% CL limits on $W\gamma$ anomalous couplings are, $-3.7 < \Delta\kappa\ < 3.7, -1.2 < \lambda < 1.2, -3.8 < \tilde\kappa < 3.8$ and $-1.2 < \tilde\lambda <$ 1.2. For $ZZ\gamma$ anomalous couplings the experimental limits are measured to be, at the 95% CL, $-4.6 < h\sbsp{30}{Z}(h\sbsp{10}{Z}) <$ 4.6 and $-1.1 < h\sbsp{40}{Z}(h\sbsp{20}{Z}) <$ 1.1. For $Z\gamma\gamma$ anomalous couplings the experimental limits are measured to be, at, the 95% CL, $-4.9 < h\sbsp{30}{\gamma}(h\sbsp{10}{\gamma}) <$ 4.9 and $-1.2 < h\sbsp{40}{\gamma}(h\sbsp{20}{\gamma}) <$ 1.2. Limits are placed on electromagnetic multipole moments for both the W and Z bosons using the measured limits of the anomalous couplings, and are presented in this thesis. All of the measurements presented in this thesis are consistent with Standard Model expectations. Made available in DSpace on 2011-05-07T12:38:48Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9522185.pdf: 6140720 bytes, checksum: 39b15036f68168b9eb7689dfccb176d5 (MD5) Previous issue date: 1994 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:43:48Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:19:12-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9522185 (UMI)AAI9522185 http://hdl.handle.net/2142/20424 eng Copyright 1994 Vondracek, Mark Frank Physics, Elementary Particles and High Energy Measurement of cross section times branching ratio for W boson + photon and Z boson + photon and search for anomalous W boson-photon and Z boson-photon couplings at 1.8 TeV text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.