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dc.contributor.advisorKlein, Joshua Richard, 1966-en
dc.creatorSeibert, Stanley Reiden
dc.date.accessioned2012-09-04T16:07:56Zen
dc.date.available2012-09-04T16:07:56Zen
dc.date.created2008-08en
dc.date.issued2012-09-04en
dc.identifier.urihttp://hdl.handle.net/2152/17755en
dc.descriptiontexten
dc.description.abstractThe Sudbury Neutrino Observatory has previously shown that ⁸B solar neutrinos undergo flavor transformation between the Sun and the Earth. This work presents a joint analysis of one-third of the pure D₂O and salt phase data sets with an electron energy threshold of 3.5 MeV. A measurement of the neutral current interaction rate, sensitive to all neutrino flavors, gives a total ⁸B flux of 4.79 ± 0.22 (stat) ± 0.13(syst) × 10⁶ cm⁻²s⁻¹. This is in agreement with the prediction of the Standard Solar Model. For the first time we obtain the v[sunscript e] survival probability separately for downward-going (day) and upward-going (night) solar neutrinos. No significant distortion is observed day or night for ⁸B neutrinos with energies greater than 6 MeV. The lack of distortion, but overall suppression of electron neutrinos relative to the total flux, is consistent with matter-induced neutrino transformation in the Sun and the large mixing angle solution.en
dc.format.mediumelectronicen
dc.language.isoengen
dc.rightsCopyright is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en
dc.subject.lcshSolar neutrinosen
dc.subject.lcshParticles (Nuclear physics)--Flavoren
dc.titleA low energy measurement of the ⁸B solar neutrino spectrum at the Sudbury Neutrino Observatoryen
dc.description.departmentPhysicsen
thesis.degree.departmentPhysicsen
thesis.degree.disciplinePhysicsen
thesis.degree.grantorThe University of Texas at Austinen
thesis.degree.levelDoctoralen
thesis.degree.nameDoctor of Philosophyen


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