Understanding the impact of an expanded neutral current pion production model on long-baseline oscillation analyses at T2K
File(s)
Author(s)
Naseby, Charles
Type
Thesis
Abstract
As long-baseline neutrino oscillation experiments continue to collect data, systematic uncertainties will play a more significant role in limiting measurement precision. The work presented here examines one such source of systematic uncertainty in the T2K (Tokai to Kamioka) experiment, neutral current neutrino interactions producing pions.
The process of expanding the oscillation analysis with an expanded cross-section treatment is described, in conjunction with the addition of SK neutral current π0 control samples. The analysis makes use of a Markov Chain Monte Carlo method to investigate the impact of these additions on both the oscillation parameter measurement and other parameters of the fit.
Finally, an investigation of future systematic uncertainties of relevance to the next-generation long-baseline neutrino experiment Hyper-Kamiokande is made. This focuses on the potential provided by a proposed new near-detector to constrain the leading systematic uncertainty in HK’s measurement of the neutrino CP violating phase δCP.
The process of expanding the oscillation analysis with an expanded cross-section treatment is described, in conjunction with the addition of SK neutral current π0 control samples. The analysis makes use of a Markov Chain Monte Carlo method to investigate the impact of these additions on both the oscillation parameter measurement and other parameters of the fit.
Finally, an investigation of future systematic uncertainties of relevance to the next-generation long-baseline neutrino experiment Hyper-Kamiokande is made. This focuses on the potential provided by a proposed new near-detector to constrain the leading systematic uncertainty in HK’s measurement of the neutrino CP violating phase δCP.
Version
Open Access
Date Issued
2022-12
Date Awarded
2023-08
Copyright Statement
Creative Commons Attribution Licence
License URL
Advisor
Scott, Mark
Wasco, Morgan
Sponsor
Science and Technology Facilities Council (Great Britain)
Publisher Department
Physics
Publisher Institution
Imperial College London
Qualification Level
Doctoral
Qualification Name
Doctor of Philosophy (PhD)