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How light is a neutrino? The answer is closer than ever
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doi: https://doi.org/10.1038/d41586-022-00430-x
References
The KATRIN Collaboration. Nature Phys. https://doi.org/10.1038/s41567-021-01463-1 (2022).
Aker, M. et al. Phys. Rev. Lett. 123, 221802 (2019).