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
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