Search for Pauli exclusion principle violating atomic transitions and electron decay with a p-type point contact germanium detector

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• 作者：N. Abgrall ; I. J. Arnquist ; F. T. Avignone III…
• 刊名：The European Physical Journal C - Particles and Fields
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：76
• 期：11
• 全文大小：655 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Elementary Particles and Quantum Field Theory
  Nuclear Physics, Heavy Ions and Hadrons
  Physics beyond the Standard Model
  Measurement Science and Instrumentation
  Astronomy, Astrophysics and Cosmology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1434-6052
• 卷排序：76

文摘

A search for Pauli-exclusion-principle-violating K\(_{\alpha }\) electron transitions was performed using 89.5 kg-d of data collected with a p-type point contact high-purity germanium detector operated at the Kimballton Underground Research Facility. A lower limit on the transition lifetime of \(5.8\times 10^{30}\) s at 90% C.L. was set by looking for a peak at 10.6 keV resulting from the X-ray and Auger electrons present following the transition. A similar analysis was done to look for the decay of atomic K-shell electrons into neutrinos, resulting in a lower limit of \(6.8\times 10^{30}\) s at 90% C.L. It is estimated that the Majorana Demonstrator, a 44 kg array of p-type point contact detectors that will search for the neutrinoless double-beta decay of \(^{76}\)Ge, could improve upon these exclusion limits by an order of magnitude after three years of operation.