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dc.contributor.authorBack, Ashley Robert
dc.date.accessioned2018-02-28T12:28:22Z
dc.date.available2018-02-28T12:28:22Z
dc.date.issued30/01/2018
dc.date.submitted2018-02-27T12:50:24.621Z
dc.identifier.citationBack, A.R. 2018. Probing new physics mechanisms in neutrinoless double-beta decay with SNO+. Queen Mary University of Londonen_US
dc.identifier.urihttp://qmro.qmul.ac.uk/xmlui/handle/123456789/33945
dc.descriptionPhDen_US
dc.description.abstractIn 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.isoenen_US
dc.publisherQueen Mary University of London
dc.subjectLawen_US
dc.subjectFood securityen_US
dc.subjectConservation and equityen_US
dc.subjectCrop improvementen_US
dc.subjectUnited Nations Food and Agriculture Organizationen_US
dc.titleProbing new physics mechanisms in neutrinoless double-beta decay with SNO+en_US
dc.typeThesisen_US
dc.rights.holderThe 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


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    Theses Awarded by Queen Mary University of London

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