A team of international physicists has successfully measured the size of a certain type of neutrino, marking a significant breakthrough in understanding these subatomic particles. The researchers used beryllium to measure the radioactive decay process, which produced an electron-associated neutrino.
The experiments revealed that the neutrinos are approximately 6.2 picometers in size, hundreds of times larger than a typical atomic nucleus. This finding is possible due to the unique nature of neutrinos, which behave like fuzzy-type waves rather than physical particles. The researchers measured the size of the neutrinos by marking the boundaries of their wave packet, which vibrates more strongly.
This new measurement could lead to better understanding of why there is more matter than antimatter in the universe. Neutrinos have been a subject of interest for physicists due to their potential to shed light on this fundamental aspect of the cosmos. The development of smaller neutrino detectors will also be crucial for future experiments, as it will enable scientists to study these particles more effectively.
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Source: https://phys.org/news/2025-02-size-neutrino-physicists-considerably-larger.html