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Revisiting large neutrino magnetic moments

MPS-Authors
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Lindner,  Manfred
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Radovcic,  Branimir
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Welter,  Johannes M.
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Citation

Lindner, M., Radovcic, B., & Welter, J. M. (2017). Revisiting large neutrino magnetic moments. Journal of high energy physics: JHEP, 2017(7): 139. doi:10.1007/JHEP07(2017)139.


Cite as: https://hdl.handle.net/21.11116/0000-0000-B7AF-D
Abstract
Current experimental sensitivity on neutrino magnetic moments is many orders of magnitude above the Standard Model prediction. A potential measurement of next-generation experiments would therefore strongly request new physics beyond the Standard Model. However, large neutrino magnetic moments generically tend to induce large corrections to the neutrino masses and lead to fine-tuning. We show that in a model where neutrino masses are proportional to neutrino magnetic moments. We revisit, discuss and propose mechanisms that still provide theoretical consistent explanations for a potential measurement of large neutrino magnetic moments. We find only two viable mechanisms to realize large transition magnetic moments for Majorana neutrinos only.