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  Neutrinoless Quadruple Beta Decay

Heeck, J., & Rodejohann, W. (2013). Neutrinoless Quadruple Beta Decay. Europhysics letters, 103(3): 32001, pp. 1-6. doi:10.1209/0295-5075/103/32001.

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1306.0580.pdf (Preprint), 166KB
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File downloaded from arXiv at 2013-08-05 09:35. accepted by EPL
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http://dx.doi.org/10.1209/0295-5075/103/32001 (Publisher version)
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 Creators:
Heeck, Julian1, Author           
Rodejohann, Werner1, Author           
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1Werner Rodejohann - ERC Starting Grant, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society, ou_907556              

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Free keywords: High Energy Physics - Phenomenology, hep-ph,High Energy Physics - Experiment, hep-ex,Nuclear Experiment, nucl-ex,Nuclear Theory, nucl-th
 Abstract: We point out that lepton number violation is possible even if neutrinos are Dirac particles. We illustrate this by constructing a simple model that allows for lepton number violation by four units only. As a consequence, neutrinoless double beta decay is forbidden, but neutrinoless quadruple beta decay is possible: $(A,Z) \to (A,Z+4) + 4 e^-$. We identify three candidate isotopes for this decay, the most promising one being Nd-150 due to its high $Q_{0\nu 4\beta}$-value of 2 MeV. Analogous processes, such as neutrinoless quadruple electron capture, are also possible. The expected lifetimes are extremely long, and experimental searches are challenging.

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Language(s): eng - English
 Dates: 2013-06-032013-07-252013-08-02
 Publication Status: Issued
 Pages: 5 pages, 4 figures
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 Table of Contents: -
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Title: Europhysics letters
Source Genre: Journal
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Publ. Info: Bristol : IoP
Pages: 6 Volume / Issue: 103 (3) Sequence Number: 32001 Start / End Page: 1 - 6 Identifier: ISSN: 0295-5075
CoNE: https://pure.mpg.de/cone/journals/resource/954928574711