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Measurement of the Michel Parameter Rho Using the MEGA Positron Spectrometer

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dc.contributor.authorLee, Fei-shengen
dc.contributor.committeechairPiilonen, Leo E.en
dc.contributor.committeememberSimonetti, John H.en
dc.contributor.committeememberKinoshita, Kayen
dc.contributor.committeememberAbashian, Alexanderen
dc.contributor.committeememberChang, Lay Namen
dc.contributor.departmentPhysicsen
dc.date.accessioned2014-03-14T20:09:26Zen
dc.date.adate2001-04-29en
dc.date.available2014-03-14T20:09:26Zen
dc.date.issued2001-04-03en
dc.date.rdate2002-04-29en
dc.date.sdate2001-04-12en
dc.description.abstractThis experiment attempts to measure the Michel parameter Rho in normal muon decay Mu to e nu_{e} nu_{mu} with a precision of 0.001. The Standard Model with pure V-A interaction gives 0.75 for this parameter. The world average value is 0.7518 +/- 0.0026. A deviation of the value of Rho from 0.75 will indicate new physics. The experiment, RHO, was carried out at the Los Alamos Meson Physics Facility (LAMPF) of Los Alamos National Laboratory (LANL) in New Mexico, USA, in 1993. The existing experimental set-up that was built for the MEGA experiment was used for the RHO measurement. The experiment was a collaboration of about 50 physicists from Los Alamos National Laboratory, Stanford University, Fermi National Accelerator Laboratory, Virginia Tech, Texas A University, Indiana University, Valparaiso University, University of Houston, University of Chicago and University of Virginia. The result of the experiment is in agreement with Standard Model. The precision of this measurement was dominated by systematic uncertainties due to the fact that the positron spectrometer used in the measurement was designed for another experiment. Thus, the data analysis here focused mainly on the determination of systematic errors.en
dc.description.degreePh. D.en
dc.identifier.otheretd-04122001-101532en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-04122001-101532/en
dc.identifier.urihttp://hdl.handle.net/10919/26790en
dc.publisherVirginia Techen
dc.relation.haspartetd.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectStandard Modelen
dc.subjectV-A Theoryen
dc.subjectMichel Parameteren
dc.subjectMuon Decayen
dc.titleMeasurement of the Michel Parameter Rho Using the MEGA Positron Spectrometeren
dc.typeDissertationen
thesis.degree.disciplinePhysicsen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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