dc.contributor.author | Back, Ashley Robert | |
dc.date.accessioned | 2018-02-28T12:28:22Z | |
dc.date.available | 2018-02-28T12:28:22Z | |
dc.date.issued | 30/01/2018 | |
dc.date.submitted | 2018-02-27T12:50:24.621Z | |
dc.identifier.citation | Back, A.R. 2018. Probing new physics mechanisms in neutrinoless double-beta decay with SNO+. Queen Mary University of London | en_US |
dc.identifier.uri | http://qmro.qmul.ac.uk/xmlui/handle/123456789/33945 | |
dc.description | PhD | en_US |
dc.description.abstract | In this thesis, I present the theory of neutrinoless double-beta decay (0 2 ),
particularly the theory of exotic modes of 0 2 involving the emission of
one or two Majorons. Alongside this, I summarise the most recent results
in the experimental search for 0 2 , including limits on the rate of these
exotic processes. I describe the SNO+ experiment and it’s physics goals,
which include the search for 0 2 . As part of the SNO+ collaboration, I
have made a signi cant contribution towards the development of the data
quality software that is essential for ensuring SNO+ can achieve its physics
goals—including in 0 2 searches. I describe how I developed a software
package that performs the high-level data quality checks.
Continuing with the software theme, I then describe a python-based
limit-setting and tting software package called echidna. I have been a lead
developer of echidna as part of my PhD, so I describe the software in detail
and how it can be used to set limits on 0 2 signals. By reproducing the
sensitivity results of the KamLAND-Zen experiment, in four key Majoronemitting
0 2 modes, I verify the use of echidna as a limit-setting tool
for this type of search. Finally, I present the results of a comprehensive
sensitivity study, where I determine the potential sensitivity of SNO+ to the
same set of Majoron-emitting modes that KamLAND-Zen and other 0 2
experiments have already investigated. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Queen Mary University of London | |
dc.subject | Law | en_US |
dc.subject | Food security | en_US |
dc.subject | Conservation and equity | en_US |
dc.subject | Crop improvement | en_US |
dc.subject | United Nations Food and Agriculture Organization | en_US |
dc.title | Probing new physics mechanisms in neutrinoless double-beta decay with SNO+ | en_US |
dc.type | Thesis | en_US |
dc.rights.holder | The copyright of this thesis rests with the author and no quotation from it or information derived from it may be published without the prior written consent of the author | |