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Anomaly confirmed; could be evidence for sterile neutrino


swansont
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Some folks are probably excited about this...

https://phys.org/news/2022-06-results-anomaly-elementary-particle.html

New scientific results confirm an anomaly seen in previous experiments, which may point to an as-yet-unconfirmed new elementary particle, the sterile neutrino, or indicate the need for a new interpretation of an aspect of standard model physics, such as the neutrino cross section, first measured 60 years ago.

 

 

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Agreed, definitely interesting. 

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BEST used 26 irradiated disks of chromium 51, a synthetic radioisotope of chromium and the 3.4 megacurie source of electron neutrinos, to irradiate an inner and outer tank of gallium, a soft, silvery metal also used in previous experiments, though previously in a one-tank set-up. The reaction between the electron neutrinos from the chromium 51 and the gallium produces the isotope germanium 71.

The measured rate of germanium 71 production was 20–24% lower than expected based on theoretical modeling. That discrepancy is in line with the anomaly seen in previous experiments.

Magic numbers:

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In nuclear physics, a magic number is a number of nucleons (either protons or neutrons, separately) such that they are arranged into complete shells within the atomic nucleus. As a result, atomic nuclei with a 'magic' number of protons or neutrons are much more stable than other nuclei. The seven most widely recognized magic numbers as of 2019 are 2, 8, 20, 28, 50, 82, and 126

If they're nucleating the gallium with radioactive chromium to produce germanium I'd bet they know what it's possible to produce. If it's not a particularly stable configuration, it makes sense to me that there would be losses in the energy they're using to do it. I have to think they're aware of such considerations, and would account for that to make their expected theoretical model. Matches prior results, more experiments needed.

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1 hour ago, Moontanman said:

Interesting, does this indicate any real world consequences or is it too soon to really say? 

I understand it could shed light (haha) on dark matter. If it's confirmed and has the right mass, or something, ........................

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