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dc.contributor.advisorHardy, John C
dc.creatorBencomo, Miguel
dc.date.accessioned2019-01-23T16:37:19Z
dc.date.available2019-01-23T16:37:19Z
dc.date.created2018-12
dc.date.issued2018-10-29
dc.date.submittedDecember 2018
dc.identifier.urihttp://hdl.handle.net/1969.1/174335
dc.description.abstractAs part of the continued effort to test the unitarity of the Cabbibo-Kobayashi-Maskawa matrix, the branching ratio for the Tvz = -1 superallowed 0^+ → 0^+ positron-emitter ^26Si was measured precisely for the first time. Since the QvEC value, 4840.86(10) keV, and half-life, 2245.3(7) ms, are known precisely, the branching ratio is all that is required to obtain a precise ft value. This completes the second pair of mirror superallowed transitions, ^26Si → ^26mAl and 26mAl → ^26Mg. A previous measurement of the mirror transitions, ^38Ca → ^38mK and ^38mK → ^38Ar, showed that the ratio of mirror ft-values is very sensitive to the model used to calculate the small isospin symmetry-breaking corrections required to extract Vvud. In calculating this correction, both Woods-Saxon and Hartree-Fock radial wave functions have been used, with the experimental results from the first pair favoring Woods-Saxon. The result for the A = 26 mirror pair demonstrates that this conclusion can be generalized.en
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.subjectSuperalloweden
dc.subjectbeta decayen
dc.subjectbranching ratioen
dc.titleSuperallowed β-Decay Branching Ratio Measurement of 26Sien
dc.typeThesisen
thesis.degree.departmentPhysics and Astronomyen
thesis.degree.disciplinePhysicsen
thesis.degree.grantorTexas A & M Universityen
thesis.degree.nameDoctor of Philosophyen
thesis.degree.levelDoctoralen
dc.contributor.committeeMemberMelconian, Dan
dc.contributor.committeeMemberYennello, Sherry
dc.contributor.committeeMemberKo, Che-Ming
dc.type.materialtexten
dc.date.updated2019-01-23T16:37:20Z
local.etdauthor.orcid0000-0003-4812-7513


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