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Type of Document Dissertation Author Couture, Jennifer Michelle Author's Email Address jennifer.m.couture@gmail.com URN etd-12132007-091949 Title A Search for Second Class Currents in the A=8 System Degree Doctor of Philosophy Department Physics Advisory Committee
Advisor Name Title Alejandro Garcia Committee Co-Chair Michael Wiescher Committee Co-Chair Gordon Berry Committee Member Philippe Collon Committee Member Umesh Garg Committee Member Keywords
- physics beyond the standard model
- second class currents
Date of Defense 2007-11-27 Availability restricted Abstract Probing for second-class induced weak currents is one method of testing selectpredictions of the Standard Model. Although the current limits are not inconsistent
with zero, shrinking these limits will provide more information as to the accuracy of
the Standard Model’s predictions. This work measures the &beta-delayed coincident &alpha
particles resulting from the decay of 8Li and 8B. Coupling these measurements with
a detailed simulation of the experiment was intended to improve the limits on the
second-class induced tensor component of the weak current. Although unsuccessful,
the experiment in this work greatly improved the number of coincident statistics
over the previous measurement. This work explores several possible explanations
for the disagreement between simulation and experiment and suggests a myriad of
future improvements to be applied the next time the experiment is attempted.
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