Graham, Kevin2024-08-132024-08-1319951995https://hdl.handle.net/1828/17948The form of the coupling for the charged weak current is assumed to be V-A in the Standard Model. This structure has been well tested in muon decays but there have only been a small number of such tests in leptonic tau decays. This thesis uses data collected by the OPAL experiment at LEP to determine the e Michel parameter for leptonic tau decays: l = 0. 79~g:!!. This is consistent with the pure V-A prediction of the Standard Model.68 pagesAvailable to the World Wide WebThesis