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Dissertation
Search for the disappearance of a neutron with KamLAND detector
Doctor of Philosophy (Ph.D.), Drexel University
Aug 2009
DOI:
https://doi.org/10.17918/etd-3129
Abstract
Nucleon decay is by definition a baryon number violating process, and within the context of the Standard Model(SM) of particle physics is forbidden. Extensions of the SM, such as Grand Unification Theories (GUTs), commonly require baryon number violation and nucleon decay. The Kamioka Liquid scintillator Anti-Neutrino Detector (KamLAND) is used in a search for single neutron intra-nuclear disappearance that would produce holes in the s-shell energy level of ¹²C nuclei. Such holes could be created as a result of nucleon decay into "invisible" (inv) modes, e.g. n [right arrow] 3[nu]. The de-excitation of the corresponding daughter nucleus results in a sequence of space and time correlated events observable in the liquid scintillator detector. We report on a new limit for neutron disappearance: [tau](n [right arrow] inv) > 6.02 x 10²⁹ years (90% CL).
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Details
- Title
- Search for the disappearance of a neutron with KamLAND detector
- Creators
- Tatjana Miletic - DU
- Contributors
- Charles E. Lane (Advisor) - Drexel University (1970-)
- Awarding Institution
- Drexel University
- Degree Awarded
- Doctor of Philosophy (Ph.D.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Resource Type
- Dissertation
- Language
- English
- Academic Unit
- College of Arts and Sciences; Physics; Drexel University
- Other Identifier
- 3129; 991014632304404721