Show simple item record

dc.creatorSeibert, Stanley Reid
dc.date.accessioned2012-09-04T16:07:56Z
dc.date.available2012-09-04T16:07:56Z
dc.date.created2008-08
dc.date.issued2012-09-04
dc.identifier.urihttp://hdl.handle.net/2152/17755
dc.descriptiontext
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_US
dc.format.mediumelectronic
dc.language.isoengen_US
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.
dc.subject.lcshSolar neutrinos
dc.subject.lcshParticles (Nuclear physics)--Flavor
dc.titleA low energy measurement of the ⁸B solar neutrino spectrum at the Sudbury Neutrino Observatoryen_US
dc.description.departmentPhysicsen_US
thesis.degree.departmentPhysicsen_US
thesis.degree.disciplinePhysicsen_US
thesis.degree.grantorThe University of Texas at Austin
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US


Files in this item

Icon

This item appears in the following Collection(s)

Show simple item record